an electrician charges $90 to identify a problem and $85 per hour to fix a problem. Write an equation to express the relationshi
1 answer:
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The nearest whole number the diameter of the circle is 5.0 cm.
<u>Given the following data:</u>
- Circumference of a circle = 15.4 cm
To estimate to the nearest whole number the diameter of the circle:
In this exercise, you're required to solve for the diameter of a circle and round up its value to the nearest whole number.
<h3>How to calculate the circumference of a circle.</h3>Mathematically, the circumference of a circle is given by the formula:
<u>Where:</u>
- D is the diameter of a circle.
Making D the subject of formula, we have:
Substituting the given parameters into the formula, we have;
D = 4.90 cm
To the nearest whole number:
D = 4.90 ≈ 5.0 cm
Read more on circumference of a circle here: brainly.com/question/14478195
Answer:
The length of the mat is 30 inches.
Step-by-step explanation:
Let H be the hypotenuse of the incline mat, L its length and h its height.
It is given that H = L + 4 and h = L - 14. Now, using Pythagoras' theorem for right-angled triangles, H² = L² + h²
(L + 4)² = L² + (L - 14)²
Expanding, we have
L² + 8L + 16 = L² + L² -28L + 196
collecting all the terms to the right side, we have
L² + L² -28L + 196 - L² - 8L - 16 = 0
L² - 36L + 180 = 0
Using the quadratic formula, L =
L
We use the larger answer L = 30 inches since L = 6 would give h = L -14 = 6 - 14 = -8 .
So, the length of the mat is 30 inches.
Answer:
so y = 3x - 3
since 3x + 6 is on the bottom,
so this means it should be the graph of y = 3x - 3, but with a hole at (-2, -9)