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zysi [14]
3 years ago
8

Find the circumference of a circle that has a radius of 21 inches. How do you do this

Mathematics
1 answer:
Charra [1.4K]3 years ago
5 0

Answer:

it is 27

Step-by-step explanation:

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Write a system of equations to describe the situation below. Sparkles the Clown makes balloon animals for children at birthday p
almond37 [142]

Answer:

3.

Step-by-step explanation:

Let's break it down.

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What I did for part 2 of the equation, is I multiplied 4 and 5 by 3 to ensure the variable matched my calculations. 4x3 is 12, and 5x3 is 15. add 12 and 15, and you will get 27 total balloons.

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3 years ago
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winthrop Middle School had enrollment of 1,342 and a total of 215 teachers. what was the student teacher ratio for this School w
eimsori [14]
Teachers= 215
Students= 1,342

Student: Techer
= 1,342: 215
= 62.1:1
= \frac{62.1}{1}
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3 years ago
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Help me help me math question help me emerge
ioda

Answer:

Step-by-step explanation:

√13.7/(3.05^2+2.6)

8 0
3 years ago
A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the
aleksklad [387]
R = speed in still water
r + c = speed with current
r - c = speed against current

3.5(r + c) = 70
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4(r + 20 - r) = 5(r - 20 + r)
80 = 10r - 100
180 = 10r
18 = r
The speed in still water is 18 km/hour
3 0
3 years ago
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000. use the 68-95-99.7 rule to
Lelechka [254]
152700 is answer. Try to do these problems on paper then you can see where you went wrong . also try to do the actual question

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