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Leviafan [203]
4 years ago
13

Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3.

Mathematics
2 answers:
TiliK225 [7]4 years ago
8 0
3.14((4)2+(4)(3))
3.14(8+12)
3.14 (20)
=62.8
yuradex [85]4 years ago
6 0
I think the ansewer is 25.55 but am not 100% sure
You might be interested in
Help me please (show work)
garri49 [273]

9514 1404 393

Answer:

  14.  53.1°

  16.  253.7°

Step-by-step explanation:

14. The measure of angle L can be found from the cosine relation:

  Cos = Adjacent/Hypotenuse

  cos(L) = 9/15 = 3/5

  L = arccos(3/5) = 53.1° . . . arc MK

__

16. Arc MK is half of arc JK, so that arc is 106.3°. The long arc JPK is the difference between 360° and the measure of the short arc JK.

  360° -106.3° = 253.7° . . . arc JPK

6 0
3 years ago
Write the numerical expression in words then solve (98-78)×11
Arada [10]
<span>Find the difference between ninety-eight and seventy-eight, then multiply by eleven. Ninety-eight minus seventy-eight is twenty, take this and multiply if by eleven to arrive at an answer of eleven. Following the order of operations the math within the parentheses must be done first, then the multiplication. The answer is two-hundred and twenty.</span>
4 0
4 years ago
The 6th term is 22 and the common difference is 6. what is the 50th term
Tom [10]
The general formula for an arithmetic sequence is: 
<span>a(n) = a + d(n - 1) </span>

<span>a : first term </span>
<span>d : common difference (6) </span>
<span>n : number of the term </span>

<span>In your example, you are told the 6th term is 22. </span>
<span>a(6) = a + 6(6 - 1) = 22 </span>
<span>a + 30 = 22 </span>
<span>a = 22 - 30 </span>
<span>a = -8 </span>

<span>So now you have the general formula: </span>
<span>a(n) = -8 + 6(n - 1) </span>

<span>If you like you can simplify it: </span>
<span>a(n) = -8 + 6n - 6 </span>
<span>a(n) = 6n - 14 </span>

<span>Then you can plug in n = 50: </span>
<span>a(50) = 6(50) - 14 </span>
<span>= 300 - 14 </span>
<span>= 286</span>
4 0
3 years ago
Simplify 7N - 2N + 3P + 2P.
Fynjy0 [20]

Answer:

5N+5P

Step-by-step explanation:

7N-2N=5N

3P+2P=5P

8 0
3 years ago
Read 2 more answers
4 people can paint a fence in 3 hours. how long will it take 6 people to paint?
Mamont248 [21]

Answer:

2 hours

Step-by-step explanation:

4:3

6:2

the multiplier is 1.5

6 0
3 years ago
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