Answer:
A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."
Step-by-step explanation:
Answer:
(A) s + g + ( g + 25) = 425
Step-by-step explanation:
The answer would be 40/63 as simplified.
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Multiply the equation 2x + y = 1 by 3 to obtain same coefficients of y.

Substract the equation 3x + 3y = 15 from 6x + 3y = 3 to eliminate the terms of y.

Substitute -4 for x in the equation 2x + y = 1 to obtain the value of y.

So solution of equations is (-4,9).
The total surface area of this square based pyramid is 125 squared inches :)