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sertanlavr [38]
3 years ago
13

The average of two numbers is 25 and their difference is 8. What are the numbers?

Mathematics
1 answer:
nika2105 [10]3 years ago
8 0
x;y-the\ numbers\\\\  \left\{\begin{array}{ccc}\frac{x+y}{2}=25&|multiply\ both\ sides\ by\ 2\\x-y=8\end{array}\right\\+\left\{\begin{array}{ccc}x+y=50\\x-y=8\end{array}\right\ \ \ |add\ sides\ of\ the\ equations\\---------\\.\ \ \ \ \ \ \ \ 2x=58\ \ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\.\ \ \ \ \ \ \ \ \ \ x=29\\\\29+y=50\\y=50-29\\y=21\\\\Answer:29\ and\ 21.
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Your answer is the first choice, g = w + 5    &    g = w − 2, because if variable g is 5 MORE THAN variable w, that would mean you would have to add 5 to w in order to get g, (g = w + 5), but if it said it was 5 TIMES MORE THAN, THHHHEEEENNNNN that would mean w times 5.
Now da second problem is g = w - 2, because they said that g is 2 LESS THAN w, so you would have to subtract 2 from w to get g, also known as g = w - 2.
I hope I helped! =D
3 0
3 years ago
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What is the fourth term of the expansion of the binomial (2x+5)^5
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substitute x =2x and y = 5

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we can use the binomial theorem to find the 4th term as well
exponent - 5
term - 4
5!/ (5-4)!4! * (2x)⁴5⁵⁻⁴
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Step-by-step explanation:

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Step-by-step explanation:

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you distribute the 4 to everything in the parentheses and then combine like terms so you would combine the 8 and -2
6 0
4 years ago
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