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den301095 [7]
3 years ago
15

The ratio of the number of adults to the number of children in a library is 12:5. If there are 45 children in the library, how m

any adults are there at the library?
Mathematics
2 answers:
patriot [66]3 years ago
5 0

Answer:

The answer is 108.

Step-by-step explanation:

This can be solved with a simple proportion. 5/12 = 45/1. For 5 to become 45, you need to multiply by 9. You do the same to the denominator. 12 times 9 is 108.

zysi [14]3 years ago
4 0
The answer would be 108. 108:45 can be simplified to 12:5.
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3 years ago
1)Evaluate 2A - 3B for A = 7 and B = -2.
Gnom [1K]
Hey Brion,

1) <span>Evaluate 2A - 3B for A = 7 and B = -2.
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</span><span>2) If x = -3, then x 2-7x + 10 equals
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Now follow PEMDAS (Parentheses, Exponents, Multiplication & Division, Addition & Subtraction) to solve. Remember K.C.C (no.  1 above)
</span>-3(2) - 7(-3) + 10
<span>(-6) - (-21) + 10
(-6) + (21) + 10
15 + 10
25*****See NOTE!***
</span><span>_____________________________________________________________
Note: For #2 you may be missing a symbol between the first "x" and "2" because the answer I got above (25) is not one of your choices. Let me know what symbol is missing in the equation: </span><span>x 2-7x + 10, and I will help you solve it.</span>
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