3 : 4 = 2700 : 3600
sum the parts of the ratio : 3 + 4 = 7
divide 6300 by 7 to obtain 1 part
= 900 ← 1 part
3 parts = 3 × 900 = 2700
4 parts = 4 × 900 = 3600
note that 2700 + 3600 = 6300
Slope intercept form will help you find the function of the line :) [ y = mx + b ]
at time = 0 (y-intercept) the pool is 72in deep
the pool loses 2 inches of water every 1 hour. or -2/1
so your equation is y = -2x + 72
Good Luck!
<span>The ratio of all books to used books = all books ÷ used books = 15 / (15-6) = 5/3
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<span> The ratio of new books to used books = new books ÷ used books = 6 / 9 = 2/3
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I hope that
helps!
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Answer:
3
Step-by-step explanation:
By using the formula y2-y1/x2-x1