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quester [9]
3 years ago
5

Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0
A= 3
b= 4

=3.14(a^2 + ab)
substitute the given a & b values in expression

=3.14((3)^2 + (3*4))
multiply inside parentheses

=3.14(9 + 12)
add inside parentheses

=3.14(21)
multiply

=65.94


ANSWER: 65.94

Hope this helps! :)
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5 0
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1/5(x+2)+2x=6x-10 what does x=
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Remember I’ll give brainliest This is the reposted question, I need help with number three
AURORKA [14]

Answer:

x is three the ratio show you what you need to divide by so triangle a is 3 and triangle b is 8 times larger than triangle a.

Step-by-step explanation:

7 0
4 years ago
Assume that 11 people, including the husband and wife pair, apply for 5 sales positions. People are hired at random. (1) what is
Andrew [12]

The probability that both the husband and wife are hired is \frac{2}{11}

<u><em>Explanation</em></u>

Total number of people = 11 and total number of sales positions = 5

So, the total possible number of ways for selecting 5 people from 11 people will be: ^1^1C_{5}

Now if both the husband and wife are hired, then it means <u>the remaining (5-2)= 3 positions are filled from the remaining (11 -2) = 9 people</u>.

So, the possible number of ways for selecting 3 people from 9 people will be: ^9C_{3}

Thus, the probability = \frac{^9C_{3}}{^1^1C_{5}}=\frac{84}{462}=\frac{2}{11}  

4 0
4 years ago
What is the simplified form of 8b^3c^ 2a + 4b^3c^2?
stiv31 [10]
8b^{3} c^2+4b^{3} c^2
= (8+4) b^{3} c^2
=12 b^{3} c^2

Be carefully, normally there is no a in your expression. I think you made a mistake.

Hope this helps !

Photon
8 0
3 years ago
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