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SSSSS [86.1K]
3 years ago
9

A(r) is a function that gives the area of ta circle with the radius r. It can be written in an equation form as A(r)=3.14r^2. wh

at is the value of A(5)
Mathematics
1 answer:
notsponge [240]3 years ago
4 0
A(r)=3.14r^2, when r=5

A(5)=3.14(5^2)

A(5)=3.14(25)

A(5)=78.5 u^2
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I need help solving systems of linear equations by substitution. <br> {4x+3y=14<br> 3x-2y=2
Sauron [17]

Answer:

A) 4x+3y=14

B) 3x-2y=2

We multiply equation A) by (2/3)

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B) 3x-2y=2

5 (2/3) x = 11 (1/3)

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Step-by-step explanation:

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3 years ago
Read 2 more answers
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wel
<span>5 ,1 ,-3,-7  ?  what the dickens is going on?

notice, from 5 to 1, is really -4 units,

from 1 to -3, is -4 units as well, 1 -4 = -3  and so on.

so, to get the next term's value, you simply subtract 4 from the current one, namely -4 is the "common difference".

and we also know the first term is 5, ok... then

</span>\bf n^{th}\textit{ term of an arithmetic sequence}\\\\&#10;a_n=a_1+(n-1)d\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;d=\textit{common difference}\\&#10;----------\\&#10;d=-4\\&#10;a_1=5\\&#10;n=100&#10;\end{cases}&#10;\\\\\\&#10;a_{100}=5+(100-1)(-4)\implies a_{100}=5+(99)(-4)&#10;\\\\\\&#10;a_{100}=5-396\implies a_{100}=-391<span>
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3 0
3 years ago
Below are the steps to solve an equation:
djyliett [7]
You split the abs val into a pos and neg soln to write

x–5 = 3 and x–5 = –3
x = 8 and x = 2
5 0
3 years ago
Read 2 more answers
Need help asappp special right triangle
Korvikt [17]

Answer:

your answer is 30

Step-by-step explanation:

p to r is 15

p to q is 15 beacuse these lines are the same

and 15 plus 15 is 30

3 0
3 years ago
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