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3 years ago

6

according to the graph, what is the approximate average rate of change in the radius of the circle as the area increases from 3

square feet to 7 square feet?

1 answer:

slamgirl [31]3 years ago

7 0

Answer: the answer is 0.125 foot per square foot

Step-by-step explanation:

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Evaluate the expression. (38 + 10) ÷ 12 + 52

Mice21 [21]

48/12=4
4+52=56
Answer 56

4 0

2 years ago

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The ten students in a club are lined up in a row for a group photograph. How many different arrangements are possible if the clu

kondor19780726 [428]

We know that

if the club includes one set of identical triplets wearing matching clothes

then

the number of different arrangements that are possible is

10! / 3! = (10*9*8*7*6*5*4*3!)/3!

=604,800

The answer is

<span>604,800</span>

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3 years ago

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Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a

Alina [70]

Given:

30-hour review course average a score of 620 on that exam.

70-hour review course average a score of 749.

To find:

The linear equation which fits this data, and use this equation to predict an average score for persons taking a 57-hour review course.

Solution:

Let x be the number of hours of review course and y be the average score on that exam.

30-hour review course average a score of 620 on that exam. So, the linear function passes through the point (30,620).

70-hour review course average a score of 749. So, the linear function passes through the point (70,749).

The linear function passes through the points (30,620) and (70,749). So, the linear equation is:

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-620=\dfrac{749-620}{70-30}(x-30)$

$y-620=\dfrac{129}{40}(x-30)$

$y-620=\dfrac{129}{40}(x)-\dfrac{129}{40}(30)$

$y-620=\dfrac{129}{40}(x)-\dfrac{387}{4}$

Adding 620 on both sides, we get

$y=\dfrac{129}{40}x-\dfrac{387}{4}+620$

$y=\dfrac{129}{40}x+\dfrac{2480-387}{4}$

$y=\dfrac{129}{40}x+\dfrac{2093}{4}$

We need to find the y-value for $x=57$ .

$y=\dfrac{129}{40}(57)+\dfrac{2093}{4}$

$y=183.825+523.25$

$y=707.075$

$y\approx 707.1$

Therefore, the required linear equation for the given situation is $y=\dfrac{129}{40}x+\dfrac{2093}{4}$ and the average score for persons taking a 57-hour review course is 707.1.

4 0

2 years ago

Jenny picked 25 roses. she gave away 10 roses. What percent of the roses did Jenny give away?

diamong [38]

Divide 10 by 25, which would get you 4. Move the decimal over two to the left, because you wanted a percentage.

Jenny gave away 40% of the roses.

3 0

3 years ago

**I WILL GIVE BRAINLIEST TO THE PERSON WHO CAN HELP ME/AND 40 POINTS**

Mama L [17]

Tank calculations :

Volume = 1/4(4/3 * pi * r^3)

r= 70 feet.

Volume = 1/4(4/3 * 3.14 * 70^3)

Calculating the values:

Volume = 359,000.67 ft.cubed

No we divide the actual radius by 6 to get the volume of scale model.

Hence,

6^3 = 216 times smaller.

╦────────────────────────────╦

│Hope this helped _____________________│

│~Derelis ____________________________ │

╨___________________________________╨

3 0

3 years ago

Read 2 more answers