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zalisa [80]
4 years ago
12

Find the measure of A

Mathematics
1 answer:
iren2701 [21]4 years ago
6 0

Answer:

20 degrees

Step-by-step explanation:

First, you need to figure out what x is by adding all of your information.

(5x-5)+(14x)+90=180

19x+85=180

19x=95

x=5

Then plug it into 5x-5 and you will get 20 degrees

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What is the radius of this circle if the circumference is 18π cm? <br> 3 cm 9 cm 18 cm 36 cm
AveGali [126]

Answer:

The radius is 9 cm.

Step-by-step explanation:

The formula for calculating the circumference of a circle is

C=2\pi r

Where r is the radius and C is the circumference.

It was given in the question that; the circumference, C=18\pi cm.

We substitute this into the formula to obtain;

18\pi=2\pi r

Divide both sides by 2\pi

\frac{18\pi}{2\pi}=r

9=r

The radius is 9cm

5 0
4 years ago
If the area of a circle is 64 pie square centimeters, then what is its radius
andrey2020 [161]

Answer:

8

Step-by-step explanation:

A=πr^2

64π=πr^2

since answer is in terms of pi, ignore the pi.

sqrt(64)=8

3 0
3 years ago
An elevator travels 110 feet in 10 seconds. At that speed, how fac can this elevator travel in 12 seconds?
konstantin123 [22]

Divide 110 by 10 to get a rate if 11 feet per second. Multiply 11 by 12 seconds to get 132 feet

3 0
3 years ago
Please help me that’s would be great and I promise to mark brainlest!!
defon

Option A is correct.

If we evaluate the function at x=0, i.e. at the beginning, we have

f(0)=75 \cdot 2^0 = 75 \cdot 1 = 75

with each minute, you multiply the current number of cell by 2, so they double every minute.

Option B is incorrect, because if the number of cells increases by 2 every minute, the function would be

f(x) = 75 + 2k

Option C is incorrect, because after one minute (i.e. when x=1) we have

f(1) = 75\cdot 2^1 = 75 \cdot 2 = 150

cells, so 75 is not the number of cells after one minute

Option D is incorrect in both the initial value and the behaviour of the function

6 0
4 years ago
Johnny wants to buy the latest call of duty video game, which costs $49.99 Johnny already had $12 in his bank account. He earns
Sholpan [36]

Answer:

8

Step-by-step explanation:

because of the minus 12 would be 37.99 times 5 8 times equals 40

8 0
4 years ago
Read 2 more answers
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