Answer:
The correct answers are A B D
Step-by-step explanation:
hope this helped!
(-7x^2+3)-(-4x-3)
(−7x
2
+3)−(−4x−3)
Answer:
-28x^3-28x^2+16x+15
Step-by-step explanation:-28x^3-28x^2+16x+15
If AABC= ADEF, which congruences are true by CPCTC? Check all that
apply.
∠A ≅ ∠D , BC≅ EF , AC ≅ DF , option B , C , F are the correct answer.
What is CPCTC ?CPCTC stands for corresponding parts of congruent triangles are congruent .
This means when two triangles are congruent then the corresponding sides are also congruent.
In the given triangles , Δ ABC ≅ ΔDEF
∠A ≅ ∠D
BC≅ EF
AC ≅ DF
Therefore option B , C , F are the correct options
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Find the radius of this sphere The calculate the volume of the sphere?
Answer: r = 121.92 cm
Volume = 4/3 x 3.14 x [tex]121.92^{3}[/tex]
7587404.65
Step-by-step explanation:
The radius is given. It's the distance from the center of the sphere to the end. The radius is 4 ft. 1 ft is 30.48cm so 4ft is 121.92cm
(radius) r = 121.92 cm
Volume = 4/3 x 3.14 x [tex]121.92^{3}[/tex]
= 4/3 x 3.14 x 1812278.18
= 4/3 x 5690553.49
= 7587404.65
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The answer is (x+4) (x-2) =x.x
Square (Rug A) has area x times x = x^2 (All sides of square are equal)
x is the side of Rug A
For the Rectangle (Rug B) it mentioned that it has a length of that is 4 ft greater than the length of Rug A. The expression could be written as Length = (x+4)
It also mentions that the width of Rectangle is 2 ft less than Rug A. The expression could be written as Width = (x-2)
So, if you multiply (x+4) and (x-2), will give you the area of rectangle (Rug B)
The question mentions that the area of the rectangle and square are equal, so therefore the answer is (x+4) (x-2) =x.x
Hope it helps!
suppose the theoretical probability of winning a prize in the carnival game 0.18 based on this probability how many more customers would u have expected to win a prize
The number of customers I would have expected to win the prize is 6.
How many more customers would I have expected to win the prize?Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
Based on the probability, the number of customers I would have expected to win: 0.18 x 300 = 36
How many more people I would have expected to win : 36 - 30 = 6
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Decimal expansion of 2 1/6
The decimal expansion of 2 1/6 is 2.167
How to determine the decimal expansion?The expression is given as:
2 1/6
Rewrite the expression as:
2 + 1/6
Express 1/6 as decimal
2 + 0.167
Evaluate the sum
2.167
Hence, the decimal expansion of 2 1/6 is 2.167
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DO NOT PUT A WRONG ANSWER OR ELSE I WILL START TO REPORT YOU!!! MAKE SURE THAT YOU SHOW ALL THE STEPS OR SOLUTIONS AND EXPLAIN THE PROBLEM.
Consider a ‘Witch of Agnesi’ curve, defined:
x^2 y + 4y = 8
Find:
a) dy/dx as a function of x, using implicit differentiation. Then, verify your result by finding y explicitly and differentiating.
b) The equation of the tangent line to the graph when x = 2.
The answers are as follow:
a) y'= -2x/y
b) y' = -4/y
Why do we use implicit differentiation?
The technique of implicit differentiation allows you to find the derivative of y with respect to x without having to solve the given equation for y.
Given:
x²y+4y=8
On differentiation
applying product rule
2xy+ x²y' = 0
2xy = - x²y'
2y = -xy'
y'= -2x/y
b) equation of the tangent line to the graph when x = 2.
y' = -4/y
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determined about the triangle formed by the ground,
wall, and ladder? Check all that apply.
The triangle is isosceles.
The leg-to-hypotenuse
ratio is 1:√√2.
The leg-to-hypotenuse ratio is 1:√2.
The nonright angles are congruent.
The ladder represents the longest length in the
triangle.
(A,B,D,E)
Answer:
a² b² c² equals mc² and that is the answer
Taylor's computer randomly generate numbers between 0 and 4, as represented by the given uniform density curve.
A graph titled Random number generated by computer has random number on the x-axis. A horizontal line is at y = one-fourth from 0 to 4.
What percentage of numbers randomly generated by Taylor's computer are less than 0.5?
12.5%
25%
50%
87.5%
Picture posted below
12.5% is the percentage of numbers randomly generated by Taylor's computer that is less than 0.5.
An illustration of a numerical distribution with continuous results is a density curve. A density curve is, in other words, the graph of a continuous distribution. This implies that density curves can represent continuous quantities like time and weight rather than discrete events like rolling a die (which would be discrete). As seen by the bell-shaped "normal distribution," density curves either lie above or on a horizontal line (one of the most common density curves).
The percentage of numbers randomly generated by Taylor's computer are less than 0.5 is given by
P(0≤X≤0.5)
=[tex]\int_{0}^{0.5}\frac{1}{4}dx[/tex]
[tex]=\frac{1}{4}x|^{0.5}_{0}[/tex]
[tex]=\frac{1}{4}(0.5-0)[/tex]
[tex]=0.25(0.5)[/tex]
= 0.125
That is 12.5%
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Marsha deposited $9,500 into a savings account 2 years ago. The simple interest rate is 2%. How
much money did Marsha earn in interest?
Substitute the values into the equation.
Interest=$years
Answer:
$380Step-by-step explanation:
GivenDeposit amount P = $9500Interest rate r = 2%Time t = 2 years
Use interest formula:
I = PrtSubstitute given values and calculate:
$9500*0.02*2 = $380Answer:
$ 380
Step-by-step explanation:
We can use the below formula to find the simple interest.
Simple interest = P r t ÷ 100
Here,
P ⇒ Principal ⇒ $ 9500
r ⇒ rate ⇒ 2%
t ⇒ time ⇒ 2 years
Let us solve it now.
Simple interest = P r t ÷ 100
Simple interest = 9500 × 2 × 2 ÷ 100
Simple interest = 38000 ÷ 100
Simple interest = $ 380
Let (-7,3) be a point of terminal side of 0
Find Cos Sec Cot
The trigonometry ratios are cos(θ) = -7/√58, sec(θ) = -√58/7 and cot(θ) = -7/3
How to determine the trigonometry ratios?The point on the terminal side is given as:
(x, y) = (-7, 3)
Start by calculating the hypotenuse using:
[tex]h= \sqrt{x^2 + y^2[/tex]
So, we have:
[tex]h= \sqrt{(-7)^2 + 3^2[/tex]
Evaluate
[tex]h= \sqrt{58[/tex]
The cosine is then calculated using:
cos(θ) = x/h
This gives
cos(θ) = -7/√58
The secant is then calculated using:
sec(θ) = 1/cos(θ)
This gives
sec(θ) = -√58/7
The cotangent is then calculated using:
cot(θ) = cos(θ)/sin(θ)
Where
sin(θ) = y/h
So, we have:
sin(θ) = 3/√58
So, we have:
cot(θ) = (-7/√58)/(3/√58)
This gives
cot(θ) = -7/3
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Find x. Round to the nearest 10th
Answer:
[tex]\boxed{\bf x = 23.5}[/tex]
Step-by-step explanation:
Using the law of sines.
[tex] \bf \cfrac{ \sin(A) }{a} = \cfrac{ \sin(B) }{b} [/tex]
A = 42B = x a = 22a = 12[tex]\bf \cfrac{ \sin(42) }{22} = \cfrac{ \sin(x) }{12} [/tex]
[tex]\bf \cfrac{12}{22} \sin(42) = \sin(x) [/tex]
[tex] \bf \sin(x) = 0.4[/tex]
[tex]\bf x = 23.5[/tex]
_______________________Dwayne is selling hamburgers and cheeseburgers. he has 100 burger buns. each hamburger sells for $3, and each cheeseburger sells for $3.50. which system of inequalities represents the number of hamburgers, h, and the number of cheeseburgers, c, he must sell to have sales of at least $80? h c ≤ 80 3h 3.5c ≤ 100 h c ≤ 80 3h 3.5c ≥ 100 h c ≤ 100 3h 3.5c ≤ 80 h c ≤ 100 3h 3.5c ≥ 80
Let h represent hamburgers and c represent cheeseburgers
h + c ≤ 100 - The number of burgers sold
3h + 3.5c ≥ 80 - Amount that each burger sells for
Which trig expression can be used to find the height on the tree where the top guy wire attaches if the base of the wire is four feet from the base?
The trigonometric expression that can be used to find the height of the tree where the top guy wire attaches is tan(45 + 30)
How to use trigonometric rations to find height?The height of the tree can be found using trigonometric ratios.
Therefore,
tan ∅ = opposite / adjacent
Hence,
for the higher wire
tan 75 = h / 4
4 tan 75 = h
This can be express as follows:
tan 75 = tan(45 + 30)
Hence,
4 × 3.73205080757 = 14.9282032303 ft = 14.9ft
Hence, the trigonometric expression that can be used to find the height of the tree where the top guy wire attaches is tan(45 + 30)
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The box plots show Theo’s math scores and language arts scores.
Math
2 box plots. The number line goes from 50 to 100. For math, the whiskers range from 55 to 90, and the box ranges from 60 to 85. A line divides the box at 80. For language arts, the whiskers range from 50 to 90, and the box ranges from 60 to 80. A line divides the box at 70.
Language Arts
About 50% of Theo’s scores are in which range for each subject?
Based on the upper and lower quartiles of the box plots:
Range for Maths is 60 to 85
Range for Language arts is 60 to 80.
What is the Upper Quartile and the Lower Quartile?In a box plot, the about half of the data set lies between the upper quartile and the lower quartile which are represented at the beginning and the end of the edges of the box respectively. This makes up 50% of a data distribution.
Thus, for Maths, the Upper and lower quartiles are between 60 to 85, hike that for Language arts are between 60 to 80.
Therefore, 50% of Theos scores for Maths ranges from: 60 to 85, while for Language arts is: 60 to 80.
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Consider the following loan. Complete parts (a)-(c) below
An individual borrowed $88,000 at an APR of 6%, which will be paid off with monthly payments of $667 for 18 years.
a. Identify the amount borrowed, the annual interest rate, the number of payments per year, the loan term, and the payment amount.
The amount borrowed is $, the annual interest rate is%, the number of payments per year is the loan term is years, and the payment amount is $
The complete statements are mathematically given as
the amount borrowed= 88000the annual interest rate= 6%the number of payments per year= 12The loan term= 18the payment amount.=8004What is the amount borrowed, the annual interest rate, the number of payments per year, the loan term, and the payment amount.?Generally, The transfer of money, products, or services in return for other goods and services in proportions that have been previously agreed upon and deemed acceptable is what is meant by the term "payment."
In conclusion, the amount borrowed= 88000
the annual interest rate= 6%
the number of payments per year= 12
The loan term= 18
the payment amount.=667*12
the payment amount.=8004
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Of the following fractions3/7, 5/8, 7/13, and 11/19 Which is the largest
Answer:
5/8
Step-by-step explanation:
5/8=0.6.25
0.625> all the other numbers
the price for each ticket is 7.99 one person thinks the total for all eight people will be around 50.00 is this a reasonable estimate. why?
Answer:
No
Step-by-step explanation:
no because just muiltiplying 7.00 * 8 is 56 not inculuding the 99 cents it is already over 50. The answer is 63.92 so a reasonable estimate would be around $60
Find the solutions to x² = 8.
A. x- +4√6
B. x- +4√√2
C. x=+2√4
D. x=+2√2
Answer:
D. 2√2
Step-by-step explanation:
x² = 8
x = √8
x = √4 x √2
x = 2√2
Step-by-step explanation:
[tex] x {?}^{2} \sqrt{2 \times 2 \times 2} \\ \\ x { }^{2} = 2 \sqrt{2} [/tex]
PLease simplify this!!!
show all work!
The simplified form of the given expression is [tex]\frac{27}{4x^{12} y^{8} }[/tex].
The given expression is [tex]\frac{4(3x^{2} y^{4} )^{3} }{(2x^{3} y^{5} )^{4} }[/tex].
What are exponents?Exponentiation is a mathematical operation, written as bⁿ, involving two numbers, the base b and the exponent or power n, and pronounced as "b raised to the power of n".
We need to simplify the given expression.
Now, [tex]\frac{4(3^{3}x^{6} y^{12} )}{2^{4} x^{12}y^{20} }[/tex]
⇒[tex]\frac{108x^{6}y^{12} }{16x^{12} y^{20} }[/tex]
⇒[tex]\frac{27}{4x^{12} y^{8} }[/tex]
Therefore, the simplified form of the given expression is [tex]\frac{27}{4x^{12} y^{8} }[/tex].
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A firm that sells e-books - books in digital form downloadable from the Internet - sells all e-books relating to do-it-yourself topics (home plumbing, gardening, and so on) at the same price. At present, the company can earn a maximum annual profit of $ when it sells copies within a year's time. The firm incurs a -cent expense each time a consumer downloads a copy, but the company must spend $ per year developing new editions of the e-books. The company has determined that it would earn zero economic profits if price were equal to average total cost, and in this case it could sell copies. Under marginal cost pricing, it could sell copies.
Part 2
In the short run, to the nearest cent, what is the profit-maximizing price of e-books relating to do-it-yourself topics? $
enter your response here.
Part 3
At the profit-maximizing quantity, to the nearest cent, what is the average total cost of producing e-books? $
enter your response here.
The profit-maximizing price of e-books relating to do-it-yourself topics is $5.35 and the average total cost of producing e-books is $4.35.
Profit-maximizing price and average total costa. Profit-maximizing price
The maximum that the firm can earn is $35,000 at a quantity of 35,000 copies
Fixed cost FC = $140,000
Variable cost vc=$0.35 per book
Total Revenue TR =P XQ
Total Revenue TR= P x 35,000
Total Cost TC = FC + VC XQ
Total Cost TC = 140,000 + (0.35×35,000)
Total Cost TC = 140,000 +$12,250
Total Cost TC = $152,250
Profit = TR- TE
35,000 = 35,000P- $152,250
35,000P=187,250
P=187,250/35,000 copies
P=$5.35
b. Average total cost
Average total cost=Total cost/Quantity
Average total cost= $152,250/35,000 copies
Average total cost=$4.35
Therefore the profit-maximizing price of e-books relating to do-it-yourself topics is $5.35 and the average total cost of producing e-books is $4.35.
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The complete question is:
A firm that sells e-books - books in digital form downloadable from the Internet - sells all e-books relating to do-it-yourself topics (home plumbing, gardening, and so on) at the same price. At present, the company can earn a maximum annual profit of $35,000 when it sells 35,000 copies within a year's time. The firm incurs a 35-cent expense each time a consumer downloads a copy, but the company must spend $140,000 per year developing new editions of the e-books. The company has determined that it would earn zero economic profits if price were equal to average total cost, and in this case it could sell 40,000 copies. Under marginal cost pricing, it could sell 120,000 copies.
In the short run, to the nearest cent, what is the profit-maximizing price of e-books relating to do-it-yourself topics?
At the profit-maximizing quantity, to the nearest cent, what is the average total cost of producing e-books?
Estimate the solution to the following system of equations by graphing.
9x + 8y=26
3x + 2y=9
Solution of 9x+8y=26 and 3x+2y=9 are given by (C) [tex]\mathbf{x=\frac{10}{3},y=-\frac{1}{2}}[/tex].
We have to plot the graphs of the given two lines or curves, then we have to find the intersection point(s) of the curves or lines. That point is the solution for the system of the equations.
Given equations are,
9x+8y=26 .................(1)
3x+2y=9 ...................(2)
Now multiplying 3 with (2) and then subtracting (1) from that we get,
3(3x+2y)-(9x+8y)=3(9)-26
9x+6y-9x-8y=27-26
-2y=1
y=-1/2, on dividing both sides by -2
Substituting the value of y in (1) we get,
9x+8(-1/2)=26
9x-4=26
9x=26+4
9x=30
x=30/9=10/3
Also if we draw the graphs of the given equations by using graphing calculator we get,
Here in the graph we can see that the lines represented by the given equations intersects each other at point [tex]\left(\frac{10}{3},-\frac{1}{2}\right)[/tex].
Hence the solution is [tex]x=\frac{10}{3},y=-\frac{1}{2}[/tex].
Thus the correct option is (C).
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Which of the following choices name the sides of DGF?
Answer:
Second choice GD and GF with the LINE symbol over each
Step-by-step explanation:
Angle named DGF means that G ( in the middle) is the vertex so GD would be a line starting at G going out toward D and G F would be a line starting at G going out to F
can someone please help mee
Answer:
[tex]f(z) = z^2-3z+2[/tex]
[tex]f(x+1) = x^2-x[/tex]
[tex]f(\sqrt{2}+1) = 2-\sqrt{2}[/tex]
Step-by-step explanation:
[tex]f(x+1) = x^2+2x+1-3x-3+2[/tex]
[tex]f(\sqrt{2}+1) = 2+2\sqrt{2}+1-3\sqrt{2}-3+2[/tex]
A swiming pool has a length of 12meters width of 6 meter and a height of a 5 meter how much water is needed to fill the swiming pool?
Answer:
[tex]\boxed {360 m^{3}}[/tex]
Step-by-step explanation:
Water needed to fill the pool = volume of pool
Volume :
Volume = Length × Width × HeightVolume = 12 m × 6 m × 5 mVolume = 12 m x 30 m²Volume = 360 m³Hence, 360 m³ of water has to be filled.
Answer:
360 m³
Step-by-step explanation:
The swimming pool can be modeled as a rectangular prism with the following dimensions:
length = 12 mwidth = 6 mheight = 5 mTo find how much water is needed to fill the pool, calculate the volume of the rectangular prism using the given dimensions:
[tex]\begin{aligned}\textsf{Volume of a rectangular prism} & = \sf length \times width \times height\\\implies \textsf{Volume of pool} & = \sf 12 \times 6 \times 5 \\& = \sf 72 \times 5\\& = \sf 360 \:\: m^3\end{aligned}[/tex]
Therefore, 360 m³ of water is needed to fill the swimming pool.
Grace is looking at a report of her monthly cell-phone usage for the last year to determine if she needs to upgrade her plan. The list represents the approximate number of megabytes of data Grace used each month.
700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750
If the value of mean is 781.67, then the standard deviation will be 100. Then the correct option is C.
The complete question is given below.
Grace is looking at a report of her monthly cell-phone usage for the last year to determine if she needs to upgrade her plan. The list represents the approximate number of megabytes of data Grace used each month.
700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750
What is the standard deviation of the data? Round to the nearest whole number.
65
75
100
130
What is a standard deviation?It is a metric for statistical information dispersion. The degree of spread indicates how much the result varies.
Grace is looking at a report of her monthly cell-phone usage for the last year to determine if she needs to upgrade her plan.
The list represents the approximate number of megabytes of data Grace used each month.
700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750
The mean of the data will be
Mean = (700 + 735 + 680 + ...... + 820 + 750) / 12
Mean = 781.67
Then the standard deviation will be
SD² = [(700 – 781.67)² + (735 – 781.67)² + ..... + (750 – 781.67)²] / 12
SD² = 10072.2222
SD = 100.36 ≈ 100
Then the correct option is C.
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An avid traveler is investigating whether travel websites differ in their pricing. She chooses a random sample of 32 hotel rooms from across the state and notes the price of each room from site A and site B. The mean difference (site A – site B) in the prices for the rooms is $5.49 with a standard deviation of $18.65.
Assuming the conditions for inference have been met, is there evidence that the prices of hotel rooms from site A and site B are different, on average? Use a significance level of a = 0.05.
A. Because the P-value is less than α, there is evidence that the prices of hotel rooms from site A and site B are different, on average.
B. Because the P-value is greater than α, there is evidence that the prices of hotel rooms from site A and site B are different, on average.
C. Because the P-value is less than α, there is not sufficient evidence that the prices of hotel rooms from site A and site B are different, on average.
D. Because the P-value is greater than α, there is not sufficient evidence that the prices of hotel rooms from site A and site B are different, on average.
The average car sold from Dealership A is $25,700. If the sales person receives 1.5% commission on price of car, how much commission is made on average per car sold?
Answer:
$385.50
Step-by-step explanation:
The amount of commission is found by multiplying the commission rate by the value of the sale.
1.5% × $25,700 = $385.50
A commission of $385.50 is made on an average car sold.
How do you solve this question
[tex]a - 4 = ( \sqrt{a} - 2)( \sqrt{a} + 2)[/tex]
[tex] \frac{ \sqrt{a} - 2}{a - 4} = \frac{ \sqrt{a} - 2}{( \sqrt{a} - 2)( \sqrt{a} + 2) } = \frac{1}{ \sqrt{a} + 2 } [/tex]
boat traveled downstream a distance of 60 mi and then came right back. If the speed of the current was 6 mph and the total trip took 4 hours find the average speed of the boat relative to the water.
Answer:
7.5mph
Step-by-step explanation:
Let the average speed of the boat to be x mph.
Total Distance = Avg. Speed x Total Time
60 = ((x+6) + (x-6))(4)
60 = (x+6+x-6)(4)
(2x)(4)=60
2x=60/4
2x = 15
x = 15 /2
x = 7.5mph
Answer:
15 +√261 ≈ 31.155 mph
Step-by-step explanation:
The time for the trip can be found by dividing the distance by the speed.
__
setupThe relation between time, speed, and distance is ...
time = distance/speed
The speed for the downstream leg was the sum of the boat speed (b) and 6 mph. The speed for the upstream leg was the difference. So the total trip time was ...
4 = 60/(b +6) +60/(b -6) . . . total time is the sum of the times for the legs
__
solutionMultiplying by the product of the denominators, we have ...
4(b +6)(b -6) = 60(b -6) +60(b +6)
b² -36 = 30b . . . . divide by 4 and simplify
b² -30b = 36 . . . . put in a form useful for completing the square
(b -15)² = 36 +15² . . . . . complete the square
b -15 = √261 . . . . . . . . take the square root (negative root is extraneous)
b = 15 +√261 ≈ 31.155 . . . . add 15
The average speed of the boat was about 31.155 mph.
