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jolli1 [7]
4 years ago
15

What two numbers added equal 40 but when subtracted equal 10?

Mathematics
1 answer:
julia-pushkina [17]4 years ago
8 0

Answer:

25 and 15

You can easily make a system of equations:

x + y = 40

x - y = 10

Solving for x on equation 2 gets x = 10 + y.

Plugging in this into the first equation, you get 10 + y + y = 40

Thus, 10 + 2y = 40

y = 15.

Plugging this back into either equation gets x = 25.

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4.67,4.98,4.34 minutes what is the standard deviation for these three songs
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4 years ago
Which expression is equivalent to 45 + 30
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I hope this is good enough:

8 0
3 years ago
The length of a rectangle is 10 yd less than three times the width, and the area of the rectangle is 77 yd^2. Find the dimension
oksano4ka [1.4K]

Answer:

width = 7, length = 11

Step-by-step explanation:

area = 77

length = 3w - 10

width = w

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