Answer:
1.75 hours and 2 Hours
Step-by-step explanation:
Answer:
equal to
Step-by-step explanation:
we don't know the value of the variable but if you loo at it with just the 1 there equal because g and f don' have any value so they are equal.
Y = 20x
y • x = 180
180/x = y
180/x = 20x
180 = 20x^2
x^2 = 6
x = + or - 3
Therefore y must equal + or - 60.
<h3>
Answer is choice D) 7:8</h3>
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Work Shown:
The ratio of the surface areas is 686:896 which reduces to 49:64 when we divide both parts by the GCF 64.
Now apply the square root to both parts to go from 49:64 to 7:8
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Here's an example why the square root comes into play. Imagine we had two rectangles where one is 3 by 5 and the other is 6 by 10. The areas of each are 3*5 = 15 and 6*10 = 60. Notice how the ratio of the areas is 15:60 which reduces to 1:4, and then that becomes 1:2 after applying the square root. Furthermore, notice how the 6 by 10 rectangle has dimensions exactly double that of the 3 by 5 rectangle, showing the linear scale factor is 1:2.
