Answer:
yellow area ≈ 48.3 cm²
Step-by-step explanation:
The area of the yellow region is the difference between the area of a square with side length 15 cm and the area of a quarter circle with radius 15 cm. It is helpful to know the formulas for area for a square and a circle.
Area of the square = s² = (15 cm)² = 225 cm²
The area of the full circle is ...
Area of circle = πr² = π(15 cm)² = 225π cm²
Then the area of 1/4 of that circle will be ...
Area of quarter circle = (225π cm²)/4 = 56.25π cm²
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The difference of these areas is the yellow area:
yellow area = 225 cm² - 56.25π cm² ≈ 48.2854 cm²
yellow area ≈ 48.3 cm²
Answer: 140% change (40% increase)
Step-by-step explanation:
To calculate the change, you can divide the new value (21 books) by the old value (June). This will result in a change of 1.4, which is 140% when you convert it to a percentage (by multiplying by 100). To get the secondary answer («40% increase»), you can subtract 100 to get your percent of change.
Y = 5x + 2
<span>y - 2 = 5x </span>
<span>x = (y - 2) / 5 </span>
<span>So the inverse of h(x) is (x - 2) / 5 </span>
<span>Try it. Let x = 1 </span>
<span>h(1) = 5 * 1 + 2 = 7 </span>
Yes 101.05 is greater than 101.005
