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netineya [11]
3 years ago
8

If the diameter of circle C is 3 times greater than the diameter of circle D, the area of circle C is how many times the area of

circle D?
Mathematics
1 answer:
amid [387]3 years ago
7 0
The radius of circle C is also 3 times greater than the radius of circle D.
The area of circle C:
A C = (3r)² π = 9 r² π
The area of circle D:
A D = r² π
9 r² π : r ² π = 9
Answer: It is 9 times the area of circle D.
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8_murik_8 [283]

ANSWER A

STEP BY STEP EXPLANATION

6 0
3 years ago
In triangle ABC, AC=13, BC=84, and AB=85. Find the measure of angle C
r-ruslan [8.4K]

Answer:

90°

Step-by-step explanation:

Angle C = arccos((84²+13²-85²)/(2×84×13))

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= arccos(0)

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Answered by GAUTHMATH

3 0
3 years ago
Which graph has an amplitude of 1/2?
Serjik [45]

Answer:

Step-by-step explanation:

The only graph shown in the question doesn't have amplitude 1/2. look for a graph of a periodic wave function that has maximum y-value 1/2 (0.5) and minimum y-value 1/2 (0.5), or if it is not oscillating around the x-axis, verifies that the distance between minimum y-value and maximum y-value is "1" (one). This is because the amplitude is half of the peak-to-peak distance.

Look at the attached image as example.

8 0
3 years ago
(5,12) with a slope m=10 the equation of the line is
motikmotik

Answer:

y= 10x-38

Step-by-step explanation:

Equation of a line is usually written in the form of y=mx+c, where m is its gradient and c is its y-intercept.

Given that m=10,

y= 10x +c

Now substitute the coordinates into the equation.

When y=12, x=5,

12= 10(5) +c

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8 0
3 years ago
Another name for the natural numbers is _____.
sammy [17]
<span>Another name for the natural numbers is counting numbers
because All the counting numbers(1,2,3......)are called natural numbers
so option B is correct
hope it helps</span>
8 0
3 years ago
Read 2 more answers
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