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olga55 [171]
3 years ago
11

celia donates 10.2 inches of her hair to a company that makes wings.danielle donates 2.4 fewer inches of her hair than celia.how

many total inches of hair do the two girls donate combined
Mathematics
1 answer:
Mashcka [7]3 years ago
7 0

mathematically the answer to that is 18 because 10.2 minus 2.4 is equal to the difference of 7.8 and 7.8 plus 10.2 is equal to the sum of exactly and positively 18

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Answer:

We have a + b as;

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Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

We have this as;

7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

5a + 4(7a - 11) = 22

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33a = 66

a = 66/33

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b = 7a - 11

substituting the value of a from above;

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2 years ago
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Answer:

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Step-by-step explanation:

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\sqrt{-49}=7i

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