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2 years ago

PLS HELP! URGENT 10 POINTS!!!

Mathematics

2 answers:

mixer [17]2 years ago

8 0

Answer: 392.7

Step-by-step explanation:

A=πr2=π·52≈78.53982cm² (or 78.54)

78.54 x 5

Anastaziya [24]2 years ago

7 0

Answer:

392.7cm squared (if this is incorrect i apologize.)

Step-by-step explanation:

The Area of 1 circle if the radius of one is 5cm is 78.54. Now I can multiply that by 5 ( the amount of circles ) and my answer will be 392.7cm^2

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Enrollment in a dance studio has grown exponentially since the studio opened. A graph depicting this growth is shown. Determine

denis23 [38]

Answer:

Option (4). 25%

Step-by-step explanation:

The graph attached shows the exponential growth.

Let the graphed function is y = $(1+\frac{r}{100})^{t}$

Here 'r' = Rate of growth

t = Duration of time in years

y = enrollments after time 't' years

Graph shows at time 't' = 0 or initially number of enrollments = 20

After 8 years number of enrollments will be

120 = $20(1+\frac{r}{100})^{8}$

$\frac{120}{20}=(1+\frac{r}{100})^{8}$

6 = $(1+\frac{r}{100})^{8}$

log 6 = $8\text{log}(1+\frac{r}{100})$

0.77815 = $8\text{log}(1+\frac{r}{100})$

$\text{log}(1+\frac{r}{100})$ = 0.0972689

$(1+\frac{r}{100})=1.251$

$\frac{r}{100}=0.251$

r = 25.1%

r ≈ 25%

Therefore, Option (4) will be the answer.

5 0

2 years ago

A square has an area of 81x square cm. What is the perimeter of the square ?

Fudgin [204]

Answer:

The perimeter of the square is $36\sqrt{x}\ cm$

Step-by-step explanation:

step 1

Find the length side of the square

we know that

The area of a square is equal to

$A=b^{2}$

where

b is the length side of the square

we have

$A=81x\ cm^{2}$

substitute and solve for b

$81x=b^{2}$

square root both sides

$b=9\sqrt{x}\ cm$

step 2

Find the perimeter of the square

we know that

The perimeter of the square is equal to

$P=4b$

we have

$b=9\sqrt{x}\ cm$

substitute

$P=(4)9\sqrt{x}$

$P=36\sqrt{x}\ cm$

6 0

2 years ago

Can yall help me do this

4vir4ik [10]

Formula = 4/3 x pi x r^3

4/3 x 3.14 x 7^3 = 1436.03

answer: a. 1436.03 cubic units

3 0

1 year ago

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4x -2 + 5x +6<br> What does this equal

egoroff_w [7]

Answer:

9x+4

Step-by-step explanation:

8 0

2 years ago

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2. Erin stores her art work in a box like the rectangular prism below. 10 inches long, 9 inches wide, and 4 inches tall. Write a

GarryVolchara [31]

Answer:

10*9*4=360

Step-by-step explanation:

Volume = Length * Width * Height

8 0

2 years ago