Roger mixed 5/8 cup of red paint with 2/5 cup of yellow paint. How much red paint is needed (using the same ratio) if he wants t o use 1 cup yellow paint
1 answer:
Set up the ratio as fractions (5/8) cup red / (2/5) cup yellow = r amount of red / 1 cup yellow Then cross multiply the numbers and set up as a equation like this (5/8) × 1 = (2/5) × r (5/8) = (2/5)r Multiply both sides of the equation by (5/2) to get rid of the fraction and solve for r (5/2) × (5/8) = (2/5)r × <span>(5/2) 25/16 = r Reduce down to 5/4 or change to a mixed number 1 and 1/4 cups = r</span>
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(x+5)*7=133 7x+35=133 7x=98 x=98/7 x=14
For both lines the slope is 5/2 or 2.5. Since the y-intercept is zero for both, both the equations are: y=2.5x Or y=5/2x
Answer:
1.65 minutes
Step-by-step explanation:
10 9/10 + 5 3/5 = 16 1/2
16 1/2 divided by 20 = 1.65 or 33/20