Answers
Step-by-step explanation:
the gradient = the slope = the incline = ...
many different names for the same thing.
however you call it, it is the ratio
y coordinate change / x coordinate change
whet going from one point on the line to another.
for questions like this we should look for points with integer coordinates (going through a vertex of the coordinate grid squares).
I see for example right at the left beginning (0, 1).
the next one is then (4, 2).
when going from (0, 1) to (4, 2) :
x changes by +4 (from 0 to 4).
y changes by +1 (from 1 to 2).
so, the slope or gradient is
+1/+4 = 1/4
Related Questions
Question 10 9 pts Let f(c) = x3 +62? 15x + 3. (a) Compute the first derivative of f f'(x) = (c) On what interval is f increasing? interval of increasing = (d) On what interval is f decreasing? interval of decreasing = **Show work, in detail, on the scrap paper to receive full credit. (b) Compute the second derivative of / L'(x) = (e) On what interval is concave downward? interval of downward concavity = () On what interval is concave upward? interval of upward concavity = **Show work, in detail, on the scrap paper to receive full credit.
Answers
(a) The first derivative of f is f'(x) = 3x² - 15.
(b) The second derivative of f is f''(x) = 6x.
(c) f is increasing on the interval (-∞, √5) and decreasing on the interval (√5, ∞).
(d) f is decreasing on the interval (-∞, √5) and increasing on the interval (√5, ∞).
(e) f is concave downward on the interval (-∞, 0) and concave upward on the interval (0, ∞).
(a) To find the first derivative of f, we differentiate each term of the function with respect to x using the power rule. Thus, f'(x) = 3x² - 15.
(b) To find the second derivative of f, we differentiate f'(x) with respect to x. Thus, f''(x) = 6x.
(c) To determine the intervals where f is increasing, we set f'(x) > 0 and solve for x. Thus, 3x² - 15 > 0, which simplifies to x² > 5. Therefore, x is in the interval (-∞, √5) or (√5, ∞). To determine which interval makes f increasing, we can test a point within each interval.
For example, when x = 0, f'(0) = -15, which is negative, so f is decreasing on (-∞, √5). When x = 10, f'(10) = 285, which is positive, so f is increasing on (√5, ∞). Thus, f is increasing on the interval (√5, ∞) and decreasing on the interval (-∞, √5).
(d) To determine the intervals where f is decreasing, we set f'(x) < 0 and solve for x. Thus, 3x² - 15 < 0, which simplifies to x² < 5. Therefore, x is in the interval (-∞, √5) or (√5, ∞). Again, we can test a point within each interval to determine which one makes f decreasing.
For example, when x = 0, f'(0) = -15, which is negative, so f is decreasing on (-∞, √5). When x = 10, f'(10) = 285, which is positive, so f is increasing on (√5, ∞). Thus, f is decreasing on the interval (-∞, √5) and increasing on the interval (√5, ∞).
(e) To determine the intervals of concavity, we examine the sign of the second derivative of f. If f''(x) > 0, then f is concave upward, and if f''(x) < 0, then f is concave downward. If f''(x) = 0, then the concavity changes. Thus, we set f''(x) > 0 and f''(x) < 0 and solve for x. We get f''(x) > 0 when x > 0 and f''(x) < 0 when x < 0.
Therefore, f is concave upward on (0, ∞) and concave downward on (-∞, 0).
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Help with problem in photo
Answers
Check the picture below.
[tex](x)(18)=(x+1)(16)\implies 18x=16x+16\implies 2x=16 \\\\\\ x=\cfrac{16}{2}\implies x=8=RW[/tex]
Determine the equation of the circle graphed below.
Answers
Answer:
(x-4)^2+(y-1)^2=9
Step-by-step explanation:
diameter = 6
radius = diameter/2 = 3
center (h,k) = (4,1)
standard equation of a circle (x-h)^2 + (y-k)^2=r^2
(x-4)^2+(y-1)^2=9
Answer Immeditely Please
Answers
Answer:
√429.
Step-by-step explanation:
Triangles BCD and ABC are similar, so corresponding sides are in the same ratio, so:
x/ AC = DC/x
x/39 = 11/x
x^2 = 11*39
x^2 = 429
x = √429
Isabella grows two types of pepper plants. The following dot plots show the numbers of peppers, rounded to the nearest
5
55, per plant for each type. Each dot represents a different plant. Compare the typical number of peppers per plant. In general, the
had more peppers, with
per plant
Answers
The possible values of x that satisfy the equation |x+5| = c are x = c - 5 and x = -c - 5.
what is algebra?
Algebra is a branch of mathematics that deals with mathematical operations and symbols used to represent numbers and quantities in equations and formulas.
A circle with center c(2, 4) has radius 13. a) verify that a(14,9) and b(7, 16) are points on this circle. b) if m is the midpoint of ab, show that cm is perpendicular to ab.
Answers
a) To verify that the points A(14, 9) and B(7, 16) are on the circle with center C(2, 4) and radius 13, we can use the distance formula:
Distance between point A and C:
d_AC = sqrt[(x_A - x_C)^2 + (y_A - y_C)^2]
= sqrt[(14 - 2)^2 + (9 - 4)^2]
= sqrt[144 + 25]
= sqrt(169)
= 13
Since the distance between point A and C is equal to the radius of the circle, point A is on the circle.
Distance between point B and C:
d_BC = sqrt[(x_B - x_C)^2 + (y_B - y_C)^2]
= sqrt[(7 - 2)^2 + (16 - 4)^2]
= sqrt[25 + 144]
= sqrt(169)
= 13
Since the distance between point B and C is equal to the radius of the circle, point B is also on the circle.
Therefore, points A and B are on the circle with center C(2, 4) and radius 13.
b) The midpoint of line segment AB can be found using the midpoint formula:
M = [(x_A + x_B)/2, (y_A + y_B)/2]
= [(14 + 7)/2, (9 + 16)/2]
= [10.5, 12.5]
The slope of line segment AB can be found using the slope formula:
m_AB = (y_B - y_A)/(x_B - x_A)
= (16 - 9)/(7 - 14)
= -7/-7
= 1
The slope of a line perpendicular to AB will be the negative reciprocal of m_AB:
m_CM = -1/m_AB
= -1/1
= -1
The equation of the line passing through points C(2, 4) and M(10.5, 12.5) can be found using the point-slope form:
y - y_C = m_CM(x - x_C)
y - 4 = -1(x - 2)
y = -x + 6
The slope of line CM is -1, which is the negative reciprocal of the slope of line AB. Therefore, line CM is perpendicular to line AB.
Hence, we have shown that line segment CM is perpendicular to line segment AB.
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5 dived by 465 long divsion 6th grade
Answers
Answer: 5 divided by 465 is 0.010752688172
465 divided by 5 is 93
Step-by-step explanation:
In ΔWXY, x = 4.7 cm, y = 7.9 cm and ∠W=162°. Find the area of ΔWXY, to the nearest 10th of a square centimeter.
Answers
The area of the triangle to the nearest tenth is 5.8cm²
What is area of a triangle?A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon. Examples of triangle include, isosceles, equilateral , scalene e.t.c
The area of a triangle is expressed as;
A = 1/2 b h for right angle triangle and A = absinC for others.
Here; x = 4.7, y = 7.9, W = 162
area = 1/2× 4.7 × 7.9 sin162
= 1/2 × 4.7 × 7.9 × 0.31
= 5.8 cm²( nearest tenth)
Therefore the area of the triangle is 5.8cm²
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Suppose you carry out a significance test of h0: μ = 8 versus ha: μ > 8 based on sample size n = 25 and obtain t = 2.15. find the p-value for this test. what conclusion can you draw at the 5% significance level? explain.
a the p-value is 0.02. we reject h0 at the 5% significance level because the p-value 0.02 is less than 0.05.
b the p-value is 0.02. we fail to reject h0 at the 5% significance level because the p-value 0.02 is less than 0.05.
c the p-value is 0.48. we reject h0 at the 5% significance level because the p-value 0.48 is greater than 0.05.
d the p-value is 0.48. we fail to reject h0 at the 5% significance level because the p-value 0.48 is greater than 0.05.
e the p-value is 0.52. we fail to reject h0 at the 5% significance level because the p-value 0.52 is greater than 0.05.
Answers
We can draw at the 5% significance level, the p-value is 0.02. we reject h0 at the 5% significance level because the p-value 0.02 is less than 0.05. The correct answer is a.
To find the p-value, we need to find the area to the right of t = 2.15 under the t-distribution curve with 24 degrees of freedom (df = n - 1 = 25 - 1 = 24). Using a t-table or a calculator, we find that the area to the right of t = 2.15 is approximately 0.02.
Since the p-value (0.02) is less than the significance level (0.05), we reject the null hypothesis H0: μ = 8 and conclude that there is sufficient evidence to support the alternative hypothesis Ha: μ > 8 at the 5% significance level. This means that we can say with 95% confidence that the true population mean is greater than 8.
Therefore the correct answer is a.
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For each of the following functions find f(- x) and - f * (x) , then determine whether it is even, odd or neither. Justify your answer. F(x)= x^3-7/x
Answers
The function is neither even nor odd.
To find f(-x), we substitute -x for x in the function f(x):
f(-x) = (-x)^3 - 7/(-x) = -x^3 - 7/x
To find -f(x), we multiply the function f(x) by -1:
-f(x) = -1 * (x^3 - 7/x) = -x^3 + 7/x
To determine if the function is even, odd or neither, we compare f(-x) and -f(x).
If f(-x) = f(x), the function is even.
If f(-x) = -f(x), the function is odd.
If neither of these is true, the function is neither even nor odd.
Comparing f(-x) and -f(x), we have:
f(-x) = -x^3 - 7/x
-f(x) = -x^3 + 7/x
Since f(-x) and -f(x) are not equal, and f(-x) is not the negative of -f(x), the function is neither even nor odd.
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Please help I need it ASAP, also needs to be rounded to the nearest 10th
Answers
Answer: AB = 16.4
Step-by-step explanation:
You can use tan x = opposite/adjacent
tan 38 = AB/21
21 tan 38 = AB
AB = 16.4
The inventory at the end of the year was understated by $14,750:
(A) Did the error cause an overstatement or an understatement of the gross profit for the year? Why?
(B) Which items on the balance sheet at the end of the year were overstated or understated as a result of the error?
Answers
The error caused an understatement of the gross profit for the year, as the cost of goods sold was overstated by $14,750.
The error in inventory caused an understatement of the inventory value on the balance sheet, which in turn caused an overstatement of the cost of goods sold. This is because the cost of goods sold is calculated by subtracting the cost of the ending inventory from the cost of goods available for sale.
Therefore, an understatement of the ending inventory leads to an overstatement of the cost of goods sold, which ultimately results in an understatement of the gross profit. None of the other items on the balance sheet are directly affected by the error in inventory.
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1. Paula has x cups of food in a container to feed her dogs. She pours 1. 5 cups of food into their bowls. There is now 5. 25 cups left in the container. Which equation would be used to solve this problem?
a. 1. 5 - x = 5. 25
b. 5. 25 - x = 1. 25
c. X - 1. 5= 5. 25
d. X + 1. 5= 5. 25
2. A box of donuts cost $9. You want to send donuts to the local nursing home. Set up an equation to find how many boxes you can send if you have $72.
a. 72 = 9 + b
b. 72 = 9 - b
c. 72 = 9b
d. 72 = 9/b
3. Jordan is purchasing a board to build a bookcase. He wants to divide the board into 1. 75 foot sections and he needs 6 sections. Which equation can be used to solve this problem?
a. B/1. 75 = 6
b. 1. 75b = 6
c. B - 1. 75 = 6
d. B + 1. 75 = 6
Answers
The correct option for each individual question is c. X - 1. 5= 5. 25, c. 72 = 9b and B/1.75 = 6.
1. Total food = poured food + remaining food
Keep the values in formula
x = 1.5 + 5.25
Rearranging the equation
x - 1.5 = 5.25
Thus, correct option is c. X - 1. 5= 5. 25
2. Cost of one box × number of boxes = total cost
9 × number of boxes = 72
Let us represent the number of boxes as b. So,
9b = 72
Hence, correct option is c. 72 = 9b.
3. Length of each section × number of sections = total length of bookcase sections
Let us represent total length of bookcase sections as B
1.75 × 6 = B
Rearranging the equation
B/1.75 = 6
So, the correct option is a. B/1. 75 = 6.
Thus, correct option are c. X - 1. 5= 5. 25, c. 72 = 9b and B/1.75 = 6.
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A museum sells stone souvenirs shaped like a cone with a diameter of 4.2 centimeters and a height of 9.5 centimeters. What is the volume of each souvenir? Round to the nearest tenth
PLEASE HURRY
Answers
the volume of each souvenir is 43. 85 cm³
How to determine the volumeThe formula for calculating the volume of a cone is represented as;
V = 1/3 πr²h
Given that;
V is the volumer is the radius of the coneh is the height of the coneThen,
r = diameter/2 = 4.2 /2 = 2.1 centimeters
Substitute the values, we have
Volume = 1/3 × 3.14 × 2.1² × 9.5
find the square, we have;
Volume = 1/3 × 3.14 × 4. 41 × 9.5
Multiply the values
Volume = 131. 5503/3
divide the values
Volume = 43. 85 cm³
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Solid metal support poles in the form of right cylinders are made out of metal with a
density of 6.3 g/cm³. This metal can be purchased for $0.30 per kilogram. Calculate
the cost of a utility pole with a diameter of 42 cm and a height of 740 cm. Round your
answer to the nearest cent. (Note: the diagram is not drawn to scale)
Answers
Answer:Therefore, the cost of a utility pole with a diameter of 42 cm and a height of 740 cm is approximately $1957.43.
Step-by-step explanation:First, we need to calculate the volume of the cylinder-shaped utility pole:
The radius of the pole is half the diameter, so it's 42 cm / 2 = 21 cm.
The height of the pole is 740 cm.
The volume of a cylinder is given by the formula V = πr²h, where π is approximately 3.14, r is the radius, and h is the height.
Substituting the values we have, we get V = 3.14 x 21² x 740 = 1,034,462.4 cm³.
Now we can calculate the mass of the pole:
The density of the metal is 6.3 g/cm³, which means that 1 cm³ of the metal has a mass of 6.3 g.
The volume of the pole is 1,034,462.4 cm³, so its mass is 6.3 x 1,034,462.4 = 6,524,772.72 g.
Next, we convert the mass to kilograms and calculate the cost:
1 kg is equal to 1000 g, so the mass of the pole in kilograms is 6,524,772.72 g / 1000 = 6524.77 kg.
The cost of the metal is $0.30 per kilogram, so the cost of the pole is 6524.77 kg x $0.30/kg = $1957.43.
A spinner is divided into 15 identical sectors and labeled 1 through 15.
how many spins are expected for a multiple of 4 to be spun 7 times?
select from the drop-down menu to correctly complete the sentence.
the spinner is expected to have to spin approximately times for a multiple of 4 to be spun 7 times.
Answers
Answer: 35
Step-by-step explanation: The other person is wrong
Hope this helped :)
Find the value of y
Answers
Step-by-step explanation:
x is the radius.....y is the diameter ...which is two times 'x'
find 'x' via the Pythagorean theorem
x^2 = 3.6^2 + 4^2
x = 5.38
y = 2x = 10.76 units
Solve the following diamond problem by finding the answers that would go in box 1 and box 2
20x?
sot
box2
-9x
box 1 =
box 2 =
Answers
Answer:
Step-by-step explanation:
The missing numbers are: box 1 = -5x and box 2 = 4sot, A diamond problem is a type of math puzzle that involves finding two missing values in a diamond-shaped diagram.
The top and bottom numbers of the diamond represent a product, and the left and right sides represent two numbers that add up to a middle value. The goal is to find the two missing values that fit into the diamond.
To solve a diamond problem, we need to factor the product of the top and bottom numbers and look for two factors whose sum is equal to the middle value. This is because the product of two numbers can only be made up of factors that multiply together to form the product. Once we find the two factors, we can insert them into the left and right sides of the diamond.
In the given diamond problem, we have 20x? as the top and sot as the bottom. The product of these two numbers is 20x^2sot. To find the factors, we can list all the possible factor pairs of this product and check which of them adds up to -9x, which is the middle value in the diamond. We found that -5x and 4sot are the factors that add up to -9x.
Solving diamond problems can help improve factoring skills and problem-solving abilities. It requires logical thinking and an understanding of how factors and multiples work. Additionally, diamond problems can be used to introduce algebraic concepts to students in a visual and intuitive way, making them a useful tool for teaching math to learners of all ages.
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Someone help me please
Answers
The corresponding values for the triangle in the larger circle are;
1. Perimeter of Δ BSH = 71.4 cm
2. The measure of ∠SBH = 102°.
3. The area of Δ BSH = 41.54 cm²
4. The length of the circumference of circle B = 52.275 cm
How do you calculate the corresponding values for the triangle in the larger circle, like perimeter?1. The ratio of the perimeters of similar triangles is equal to the ratio of their corresponding sides. Since OB/OA = 4.25, we have:
Perimeter(Δ BSH) = Perimeter(Δ ARG) × 4.25
Perimeter(Δ BSH) = 16.8 cm × 4.25 = 71.4 cm
2. Since the triangles are similar, their corresponding angles are congruent. Therefore, ∠SBH = ∠RAG = 102°.
3. The ratio of the areas of similar triangles is equal to the square of the ratio of their corresponding sides. Since OB/OA = 4.25, we have:
Area(Δ BSH) = Area(Δ ARG) × (4.25)²
Area(Δ BSH) = 2.3 cm² × (4.25)² = 2.3 cm² × 18.0625 = 41.54 cm²
4. The ratio of the circumferences of similar circles is equal to the ratio of their radii or diameters. Since OB/OA = 4.25, we have:
Circumference(circle B) = Circumference(circle A) × 4.25
Circumference(circle B) = 12.3 cm × 4.25 = 52.275 cm
The above answers are in response to the following questions below;
Dante created the following measurements and calculations:
He then made the following measurements and calculations:
He calculated the ratio OB = 4.25.
OA
He measured the perimeter of Δ ARG, and found it to be 16.8 cm.
He measured ∠RAG = 102°.
He calculated the area of Δ ARG, and found it to be 2.3 cm2.
He calculated the circumference of circle A, and found it to be approximately 12.3 cm.
He would now like to calculate corresponding values for the triangle in the larger circle, and he needs your help.
Calculate the following, using your knowledge that all circles are similar, along with the data already collected by Noah..
5. Find the perimeter of Δ BSH.
6. Find the measure of ∠SBH.
7. Find the area of Δ BSH.
8. Find the length of the circumference of circle B.
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Solve (d-8) (6d-3) using the box method show work
Answers
6d^2 - 51d + 24
that's it
...............................
Please Answer ASAP! PLEEEASE
Answer Fully Please And Fill IN THe Blanks!
also you will get allot of points
Answers
It is a fifth order polynomial
The constant term is -7
The leading term is [tex]x^5/7[/tex]
The coefficient of the leading term is [tex]1/7[/tex]
What is the leading term of a polynomial?The term with the highest degree—i.e., the term with the largest power of the variable—is the leading term. The leading coefficient is the leading term's coefficient.
We frequently rearrange polynomials so that the powers are descending or ascending because of the definition of the "leading" term. We can see that the leading term in the expression here is [tex]x^5/7[/tex].
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Emma is sick a lot and as a result has to go to the doctor regularly. Each time she goes there is a $20 copay that she uses her FSA to pay for. Last month she went to the doctor 9 times. She earns $20 an hour at her job. How many hours (round up) would she have to work to pay these bills without an FSA/HSA? (She pays 17 percent in taxes. )
Answers
She would have to work for 11 hours to pay these bills without her FSA/HSA.
Emma went to the doctor 9 times last month, which means she had to pay a total of 9 x $20 = $180 in copays.
Without her FSA/HSA, she would have to work to earn $180 after taxes. Since she pays 17 percent in taxes, the amount she would have to earn before taxes is $180 / (1 - 0.17) = $216.87.
To earn $216.87, she would have to work for $216.87 / $20 per hour = 10.84 hours.
Rounding up, she would have to work for 11 hours to pay these bills without her FSA/HSA.
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This wooden frame is made of three planks of wood attached with glue and nails. The wood will be painted with emulsion paint which takes 80ml of paint per metre of wood. Calculate the amount of paint needed to cover all the wood
Answers
amount of paint needed to cover all the wood in the frame, we need to first determine the total length of the wood in meters. Let's assume that each plank of wood is 1 meter long, so the total length of wood in the frame is 3 meters.
Next, we need to calculate the amount of paint required per meter of wood. The problem states that 80ml of emulsion paint is needed per meter of wood. So, we can multiply 80ml by 3 meters to get the total amount of paint needed for the entire frame.
80ml/meter x 3 meters = 240ml
Therefore, we need 240ml of emulsion paint to cover all the wood in the frame.
It is important to note that this calculation assumes that only one coat of paint will be applied to the wood. If multiple coats are desired, the amount of paint required will need to be adjusted accordingly.
In conclusion, to paint the wooden frame made of three planks of wood attached with glue and nails, we would need 240ml of emulsion paint.
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The circumference (C) of a circle is 16 cm. Which formula can you use to find the diameter (d) if you know that C = π
d?
Answers
Answer:
c/π=d
explanation:
d × π = c
divide c to isolate d
Answer: I would multiply pie by a diameter until it equals 16.
(I know this probably isn’t the professional way but it should work.
The figure shows the graphs of the functions y=f(x) and y=g(x). If g(x)=kf(x), what is the value of k? Enter your answer in the box given.
Answers
The value of k is -2
Let a line passes through the point [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. Thus the equation of line can be given as,
[tex](y -y_1)=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]......Eq.(1)
We have the information from the graph:
The graph of f(x) and g(x) are given in the problem.
The equation given is,
g(x) = k × f(x)
We have to find the value of k and also find the equation of f(x) and g(x).
The line y = f(x) lies on the points, (2,1) and (0,-3). Thus the equation of this line is,
Plug all the values in eq.(1)
[tex](y -(-3))=\frac{-3-1}{0-2}(x-0)[/tex]
[tex]y+3=\frac{-4}{-2}x[/tex]
y + 3 = 2x
y = 2x -3
So, it can be written as:
f(x) = 2x -3
The line y = f(x) lies on the points, (0,6) and (2,-2). Thus the equation of this line is,
[tex](y -6)=\frac{-2-6}{2-0}(x-0)[/tex]
[tex](y-6)=\frac{-8}{2}x[/tex]
(y- 6) = -4x
y = -4x + 6
It can be written as:
g(x) = -4x + 6
The equation given in the problem is:
g(x) = k × f(x)
Put all the values in above given equation:
-4x + 6 = k(2x - 3)
-2(2x - 3) = k × (2x - 3)
Compare the value of k :
k = -2
Hence, The value of k = -2
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For complete question, to see the attachment:
Help pls. And please actually answer the question
Answers
Start with the base graph: y = |x|
Translate the graph one unit to the right: y = |x - 1|
---We use a minus/negative/subtraction sign when dealing with horizontal translations because it is the opposite of the way we want to go. If the translation occurs within parenthesis/absolute value bars, we always do the opposite of what we think we should.
Translate the graph one unit down: y = |x - 1| - 1
---If the translation occurs to the y-value/vertically, we use the expected operation/sign. If the translation occurs outside of parenthesis, we use the same operation/sign as the translation (+ for up, - for down).
Answer: y = |x - 1| - 1
Hope this helps!
Answer:
y=|x-1|-1
Step-by-step explanation:
The function for a v shaped graph is an absolute value function: y=|x|
Subtracting 1 from the absolute value y=|x|, we move the graph 1 unit right of the x axis
Subtracting 1 from the whole equation, y=|x-1|, we move the graph 1 unit down the y axis
So, the equation would be y=|x-1|-1
A shipping container is in the shape of a right rectangular prism with a length of 11. 5
feet, a width of 8. 5 feet, and a height of 7 feet. The container is completely filled with
contents that weigh, on average, 0. 32 pound per cubic foot. What is the weight of the
contents in the container, to the nearest pound?
Answers
The weight of the contents in the container is approximately 222 pounds when rounded to the nearest pound.
The weight of the contents in the container can be calculated using the formula:
Weight = Volume x Density
First, we need to find the volume of the container, which is simply the product of its length, width, and height:
Volume = 11.5 x 8.5 x 7 = 696.5 cubic feet
Next, we need to multiply the volume by the density of the contents:
Weight = 696.5 x 0.32 = 222.08 pounds
It's important to note that the weight may vary depending on the actual density of the contents. Additionally, it's also important to consider the weight of the container itself, which would add to the total weight of the shipment.
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If you spin a spinner 75 times, how many multiples of 2?
Answers
If you spin a spinner 75 times, the number of multiples of 2 could be either 7 or 38.
Assuming the spinner has an equal chance of landing on any number from 1 to 6, we can find the probability of landing on a multiple of 2 (2, 4, or 6) by dividing the number of multiples of 2 by the total number of possible outcomes:
Number of multiples of 2 = 3
Total number of possible outcomes = 6
So the probability of landing on a multiple of 2 is:
P(multiple of 2) = 3/6 = 1/2
This means that out of 75 spins, we can expect to land on a multiple of 2 about half the time. To find the exact number, we multiply the probability by the number of spins:
Number of multiples of 2 = P(multiple of 2) x Number of spins
Number of multiples of 2 = (1/2) x 75 = 37.5
Since we can't have a fraction of a spin, we need to round to the nearest whole number. In this case, we can round up or down depending on how we interpret the question. I
f we want to know how many times we can expect to land on a multiple of 2 on average, we should round down to 37.
If we want to know the closest integer to the expected value, we should round up to 38.
So depending on the context of the question, the answer could be either 37 or 38.
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which is the range of the relation in the table below?
Answers
The range of the relation is ( 0,2)
What is range of relation?The set which contains all the second elements, on the other hand, is known as the range of the relation.
For example, the two terms a and b have the following values
a: 1, 2 ,4, 8, 10
b: 1, 4 , 12, 14.
The range of relation between the two values is ( 1 ,4) because the two values are common to both term.
Similarly, looking at the term x and y , we can see that only 0 and 2 are common to both terms.
Therefore the range of relation is (0,2)
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A person was driving their car on an interstate highway
and a rock was kicked up and cracked their windshield
on the passenger side.
The driver wondered if the rock was equally likely to
strike any where on the windshield, what the probability
was that it would have cracked the windshield in his line
of site on the windshield. Determine this probability,
provided that the windshield is a rectangle with the
dimensions 28 inches by 54 inches and his line of site
through the windshield is a rectangle with the
dimensions 30 inches
by 24 inches.
a) 0. 373
b) 0. 139
c) 0. 423
d) 0. 476
Answers
There is about a 47.62% or 0.476 chance that the rock hit the windshield in the driver's line of sight. Option D.
To determine the probability that the rock hit the driver's line of sight on the windshield, we need to compare the area of the driver's line of sight rectangle to the total area of the windshield rectangle.
The area of the windshield rectangle is:
A1 = 28 in x 54 in = 1512 sq in
The area of the driver's line of sight rectangle is:
A2 = 30 in x 24 in = 720 sq in
Therefore, the probability that the rock hit the driver's line of sight on the windshield is:
[tex]P= \frac{A2}{A1}= \frac{720 \:sq in}{1512 \:sq in }[/tex] = 0.476 or 47.6%
So, there is about a 47.62% chance that the rock hit the windshield in the driver's line of sight.
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