Answer:
-10x² - 2x - 13Step-by-step explanation:
(-2x - 10) − (10x² + 3)
= -2x - 10 − 10x² - 3
= -10x² - 2x - 13
I need help with solving the value of x. Then finding the measure of the base angle.
Answers:
x = -3
base angle = 49 degrees
============================================
Work Shown:
The missing angle is (2x+55) degrees since the base angles are congruent.
Add up the three angles and set the sum equal to 180. Solve for x.
(82)+(2x+55)+(2x+55) = 180
4x+192 = 180
4x = 180-192
4x = -12
x = -12/4
x = -3
Use this x value to find the base angle
B = base angle
B = 2x+55
B = 2*(-3)+55
B = -6+55
B = 49 degrees
Solve by making a proportion. If seven movie tickets cost $57.40, how much would 5 tickets cost?
PLSSS i need help
Answer: $41
work out what one ticket is:
$57.40/7=$8.20
and then multiply by 5
$8.20*5=41
Answer:
$41
Step-by-step explanation:
Question 12 of 25 Identify an equation that models the situation and find its solution. A tomato plant was 6 inches tall when it was planted in June. When the first tomatoes were ripe, the plant was 44 inches tall. How many inches did the plant grow? A. z – 6 = 44 z = 50 in. B. 6 + z = 44 z = 39 in. C. 6 + z = 44 z = 38 in. D. z – 6 = 44 z = 49 in. Previous Next 12 / 25 11 of 25 Answered View Summary
Answer:
C. [tex]6+z=44\Rightarrow z=38\ \text{inches}[/tex]
Step-by-step explanation:
The plant has initial length of [tex]6\ \text{inches}[/tex]
Let the height it grew after the [tex]6\ \text{inches}[/tex] be [tex]z[/tex]
So total height it grows would be [tex]6+z[/tex]
The total height of the plant is [tex]44\ \text{inches}[/tex]
So we get
[tex]6+z=44\\\Rightarrow z=44-6\\\Rightarrow z=38\ \text{inches}[/tex]
The equation that models the situation is
[tex]6+z=44\Rightarrow z=38\ \text{inches}[/tex]
What is the standard deviation of this data set? Use a calculator to help you.
Round your answer to the nearest tenth.
11,16, 22, 28, 29, 30, 31, 34, 37, 38, 43, 49, 56, 78,99
Answer:
23.2
Step-by-step explanation:
The sample standard deviation measures the spread of a data distribution of the sample. It is usually used to estimate the population standard deviation
23.2
The standard deviation of the given data set, with a mean of 40.06, is approximately 23.2 (rounded to the nearest tenth).
Option B is the correct answer.
We have,
Find the mean:
Mean = (11 + 16 + 22 + 28 + 29 + 30 + 31 + 34 + 37 + 38 + 43 + 49 + 56 + 78 + 99) / 15
= 601 / 15
= 40.06
Subtract the mean and square the differences:
(11 - 40.06)² = 844.48
(16 - 40.06)² = 578.8836
(22 - 40.06)² = 326.1636
(28 - 40.06)^² = 145.4436
(29 - 40.06)² = 122.3236
(30 - 40.06)² = 101.2036
(31 - 40.06)² = 82.0836
(34 - 40.06)² = 36.7236
(37 - 40.06)² = 9.3636
(38 - 40.06)² = 4.28
(43 - 40.06)² = 8.6436
(49 - 40.06)² = 79.92
(56 - 40.06)² = 254.0836
(78 - 40.06)² = 1439.4436
(99 - 40.06)² = 3473.9236
Calculate the mean of the squared differences:
The mean of squared differences.
= 7506.9632/15
= 500.4642
Take the square root of the mean squared differences:
Standard deviation = √(500.4642)
Standard deviation ≈ 23.223
Therefore,
The standard deviation of the given data set, with a mean of 40.06, is approximately 23.2.
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Martin wants to fill a cube with as many jelly beans as possible. In order to know the right number of jelly beans to purchase he has to
figure out the volume of the cube. Using the formula V = 53, what is the volume of the cube, if s = 7?
O A. 147 cubic feet
O B. 343 cubic feet
O C. 28 cubic feet
OD. 21 cubic feet
Answer:
a
Step-by-step explanation:
please explain this in steps please friends
Answer:
See below
Step-by-step explanation:
The LHS and RHS are exactly the same, so the equality is true.
The associate property of addition says that
[tex]\boxed{a+(b+c)=(a+b)+c}[/tex]
In order to make the addition of fractions, the denominators should be same. So we can write three fractions as one.
[tex]\dfrac{1}{2} +\left(\dfrac{2}{3}+\dfrac{3}{4} \right )[/tex]
[tex]\dfrac{1}{2} +\dfrac{2}{3}+\dfrac{3}{4}[/tex]
[tex]\dfrac{1\cdot 6 }{2\cdot 6} +\dfrac{2 \cdot 4}{3 \cdot 4}+\dfrac{3 \cdot 3 }{4 \cdot 3}[/tex]
[tex]\dfrac{ 6 }{12} +\dfrac{8}{12}+\dfrac{9 }{12}[/tex]
[tex]\dfrac{ 23 }{12}[/tex]
Answer:
You gotta give me (us) more to work with homie.
Step-by-step explanation:
If I have more of a picture with it I could possibly help but all there is a barely readable and legible nonsense equation. Sorry :(
Danielle can type 600 words in 30 minutes. How many words can she type per minute?
Answer:
20
Step-by-step explanation:
just divide 600 by 30
20. because 600 divided by 30 is 20.
Suppose a system of equations was solved my elimination and the resulting equation was 0=3. Which of the following statements is/are true.
a. The slopes of the two equations in the system are the same but their y-intercepts are different.
b. The system is an independent system.
c. The graphs of the two equations would intersect at the point (0,3).
Answer:
a. The slopes of the two equations in the system are the same but their y-intercepts are different.Step-by-step explanation:
The system resulting in equation 0=3 means:
There is no solutionThe lines are parallel as no intersectionCorrect choice is:
a. The slopes of the two equations in the system are the same but their y-intercepts are different.In rectangle ABCD, AC = 3x+15 and
BD
4x-5. Find the length of AC.
Answer:
75
Step-by-step explanation:
In this problem, AC and BD should be set equal to each other.
3x + 15 = 4x - 5
You would then solve for x, which is x = 20.
Plug 20 back in the equation for AC, 3(20) + 15, to get 75.
The length of AC is 75.
What is a rectangle?A rectangle is a two-dimensional shape where the length and width are different.
The area of a rectangle is given as:
Area = Length x width
We have,
AC = 3x + 15
BD = 4x - 5
AC and BD are diagonals of the rectangle.
The diagonals of a rectangle are equal.
Now,
AC = BD
3x + 15 = 4x - 5
15 + 5 = 4x - 3x
20 = x
Now,
AC = 3x + 15
= 3 x 20 + 15
= 60 + 15
= 75
Thus,
AC = 75
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GUYS CaN YOU PLLSSSSSSSSSSSSSSS HELP ME!!!!!!!!!11
Answer:
What is the question
Step-by-step explanation:
What is the greatest common factor of 48 and 84?
O 6
O 9
O 12
O 14
Answer:
12
Step-by-step explanation:
14 doesn't go into both 48 and 84. 12 is the next highest and it goes into both of them.
I have been trying this again and again. Can anyone plz explain this plzzz?
The picture is too blurry to read.
4x + 2 =2x + 10
Please help asap
I will give 15 points
Answer:
6x+12 I think I'm not for sure
Answer:
X=4
Step-by-step explanation:
2X+2=10
2X=8
X=4
The cost of grapes was $0.88 a pound. Change bought 4.5 pounds. Find the amount he paid.
Answer:
$3.96
Step-by-step explanation:
If he gave $.88 per each pound he bought all you have to do is multiply $.88 by how many pounds he bought 4.5. $.88x4.5 equals $3.96
Answer:
$3.96
Step-by-step explanation:
0.88*4.5= 3.96
Write an equation in point-slope form for the line that passes through the point with the given slope. point: (-1, 5) and m=-4
Answer:
y - 5 = -4(x + 1)
Step-by-step explanation:
The point-slope form is y - k = m(x - h). The point is (h, k): (-1, 5) and the slope is -4.
Here we have y - 5 = -4(x + 1)
The required point-slope form of the equation of the line is y - 5 = -4(x + 1).
Given that, To determine an equation in point-slope form for the line that passes through the point with the given slope. point: (-1, 5) and m=-4.
The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.
Here,
The point-slope of the equation of the line is given by,
y - y₁ = m(x - x₁)
Put the values in the above equation of the line
y - 5 = -4 (x - (-1))
y - 5 = -4 (x + 1)
Thus, the required point-slope form of the equation of the line is y - 5 = -4(x + 1).
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1. 1.01 x 1.1 *
2.11
11.111
1.1
1.011
Answer: 1.1
1.01 x 1.1 = 1.111
I hope this is good enough:
Which system of equations does the graph represent?
A) y = 2x + 2
y = -3x + 4
B) y = x + 2
y = -x + 4
C) y = 2x + 4
y = -3x + 2
D) y = -x + 2
y = x + 4
Answer:
The answer is B) y= x + 2
y= - x + 4
again i need some help with this :D
Answer:
v + u - 4
Step-by-step explanation:
33 1/3% of what number is 12?
[tex]33\frac{1}{3}[/tex]% of 36 is 12.
What is percentage ?Percentage is the value per hundredth.This can be numerically expressed as (required percentage)/(100 percent)×total value = required value.We can also convert fractions and decimals into percentage by multiplying 100 with it.
According to the given question we have to determine [tex]33\frac{1}{3}[/tex] % is 12.
Let the required number be x.
∴[tex]33\frac{1}{3}[/tex] % of x is 12,This can be numerically written as
(100/3)/100×x = 12.
(1/3)x = 12.
x = 36.
To cross check what we can do is check what is [tex]33\frac{1}{3}[/tex] % of 36.
So, [tex]33\frac{1}{3}[/tex] is = 100/3.
(100/3)/100×36.
= 36/3.
= 12.
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You start at (-3, 0). You move right 3 units and down 5 units. Where do you end?
Answer:
(0,-5)
Step-by-step explanation:
Write three expressions that are equivalent to the given expression.
7a+21
Answer:
a+3
2a+6
3a+9
Step-by-step explanation:
simplify by dividing by 7 and then multiply by any number in this case I did 1, 2 and 3
What is the equation, in slope-intercept form, of the line parallel to -5x + y = 2 that passes through the point
with coordinates (-2, 1)?
Answer:
y = 5x + 11
Step-by-step explanation:
- first rearrange -5x + y = 2 and you'll have y = 5x + 2
- the slopes of parallel lines are equal so the slope of the line is 5
so far we have y = 5x + b
- to get b, replace the values in the equation by the values of the given point
(1) = 5(-2) + b
- rearrange and calculate, b = 11
y = 5x + 11
Let f(x) = x + 7 and g(x) = x − 4. Find f(x) ⋅ g(x). (1 point) x2 − 3x −28 x2 − 3x − 11 x2 + 3x − 28 x2 + 3x − 11
[tex]f(x)=x+7\\g(x)=x-4\\f(x)*g(x)=(x+7)(x-4)\\f(x)*g(x)=x^2+3x-28[/tex]
So it's x^2+3x-28
Which answer is equivalent to the following expression:
42 ÷ ‒7
A.
6
B.
7
C.
‒7
D.
‒6
Answer:
D
Step-by-step explanation:
42 dived by -7 is -6, D
PLZ HURRY, I WILL GIVE BRAINLIEST!!
Which comparison symbol makes the inequality statement true?
-19 5/6 ____ -20 1/6
A. -19 5/6 -20 1/6
C. -19 5/6 = -20 1/6
Answer:
-19 5/6 > -20 1/6
-19 5/6 is greater than -20 1/6. The smaller the negative number, the greater it is compared to bigger negative numbers.
Graph the following inequality :
- 2y z x + 6
Answer: 2(-2x+3)
Step-by-step explanation:
Help pls help pls help pls help pls help pls
Answer:
It might be b (the second one)
If a polynomial function f(x) has roots 0, 4, and 3 + StartRoot 11 EndRoot, what must also be a root of f(x)?
Answer:
3 - √11Step-by-step explanation:
If the polynomial function has rational coefficients, then the missing root must be conjugate with 3 + √11, which is achieved by reversing the sign of root:
3 - √11[tex] \LARGE{ \underline{\underline{ \purple{ \bf{Required \: answer:}}}}}[/tex]
Since 3 roots are rational but one of the four is irrational. Then, there must be a conjugate pair for that which we can do by reversing the sign between the rational and the non-rational part.
Hence, Another root of the polynomial function f(x) will be ofcourse the conjugate pair of 3 + √11 i.e. 3 - √11 (Ans)
Find the slope of the line determined by each pair of points: (-1,3), (-6,-4)
Answer:
[tex]m=\frac{7}{5}[/tex]
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASAlg I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-1, 3)
Point (-6, -4)
Step 2: Find slope m
Substitute: [tex]m=\frac{-4-3}{-6-(-1)}[/tex]Simplify: [tex]m=\frac{-4-3}{-6+1}[/tex]Subtract/Add: [tex]m=\frac{-7}{-5}[/tex]Simplify: [tex]m=\frac{7}{5}[/tex]The linear equation y = one-half x + 1 is represented by the graphed line. A second linear equation is represented by the data in the table. A 2-column table with 4 rows. Column 1 is labeled x with entries negative 2, 0, 2, 4. Column 2 is labeled y with entries 7, 6, 5, 4. In which square is the solution located?
The correct answer is the letter D
Answer:
d
Step-by-step explanation:
cuz im a goddddd
