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tatuchka [14]
3 years ago
14

7. What is the area of the following circle. Use 3.14 for pi Radius is 11cm

Mathematics
1 answer:
Luda [366]3 years ago
3 0

Area of a circle = PI x r^2

Area = 3.14 x 11^2

Area = 3.14 x 121

Area = 379.94 square cm.

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3) A local school district has 4512 students this year. The student population is declining by 2.5% per year. How many students
il63 [147K]

Answer:

Number of students(n1)= 4,402

Step-by-step explanation:

Giving the following information:

Number of students= 4,512

Declining rate= 2.5%

<u>To calculate the number of students next year, we need to use the following formula:</u>

Number of students (n+x)= number of students (n0) / [(1+declining rate)^(n+x)

x= number of years

Number of students(n1)= 4,512/1.025

Number of students(n1)= 4,402

5 0
3 years ago
I need help with this<br>​
zzz [600]

Answer:

Yes because 5^2 + 12^2 = 13^2

Step-by-step explanation:

We can check using the Pythagorean theorem

a^2 + b^2 = c^2

5^2 + 12^2 = 13^2

25+ 144= 169

169 = 169

5 0
3 years ago
Read 2 more answers
Given h(x) = 5x + 2, solve for a when h(x) = -8.
Whitepunk [10]

Answer:

i think its -38

Step-by-step explanation:

3 0
3 years ago
Laura has 30 cupcakes she wants to give each friend 1/6 of her cupcakes how many cupcakes will Each friend get
sdas [7]

Answer:

5 cupcakes

Step-by-step explanation:

=1x 30/ 6

=5

I hope it helps

Thank U

7 0
3 years ago
Read 2 more answers
3. Elena can make 15 pizzas in 3 hours. If the number of pizzas is represented by p and time is represented by t, Write an equat
zhuklara [117]

Answer:

Your answer is 3x = 15

Step-by-step explanation:

3x = 15

Since 3 is being multiplied by x, we divide both sides by 3.  3x/3 cancels out, and you're left with x.

15/3 = 5

x = 5

This is my take using algebraic methods.

6 0
3 years ago
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