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tensa zangetsu [6.8K]
2 years ago
12

[Read attachment]

Mathematics
1 answer:
attashe74 [19]2 years ago
6 0

Answer:

r=2.9cm

Step-by-step explanation:

we know the formula, mass= density*volume

as a result we can figure out the volume = mass/density

=485/8 cm^3

=60.625cm^3

here comes another formula of volume of cone = \frac{1}{3}\pir^{2}h^{}

we will use this to find the radius,

\frac{1}{3}\pir^{2}h^{}=60.625

\pir^{2}h^{}=181.875

h is 70mm which we will turn to 7cm

\pir^{2}*7=181.875

r^{2}=8.27

r=2.875825cm

r=2.9cm

nice question. hope this helps

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faust18 [17]

Answer:

100 minutes

Step-by-step explanation:

To solve this, we can make a proportion.

The bike travels 5 miles in 20 minutes, and 25 miles in x minutes

5/20=25/x

Cross multiply

5*x=20*25

5x=500

Divide both sides by 5. This will cancel out the 5, and leave x by itself.

5x/5=500/5

x=100

There are 60 minutes in 1 hour. If we subtract 60 from 100,

100-60=40

So, this is also equivalent to 1 hour and 40 minutes.

It takes 100 minutes, or 1 hour and 40 minutes, to travel 25 miles.

5 0
3 years ago
A meal has 408 calories in 8 servings. Find the unit rate.
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Answer:

51 calories per serving

Step-by-step explanation:

This is a fraction equal to

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We want a unit rate where

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8 0
2 years ago
An airplane on autopilot took 5 hours to travel 3,595 kilometers. What is the unit rate for kilometers per​ hour?
Mnenie [13.5K]

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719 km/hour

Step-by-step explanation:

To find the unit rate you have to divide

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3 0
2 years ago
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Ludmilka [50]

Answer:

A, x>3

Step-by-step explanation:

You solve the equation as normal by crossing out both sides and getting what equals to x, but since you divided by a negative the sign flips and you are left with your answer. Hope this helps!

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3 years ago
Given the equation 2 Square root of x minus 5 = 2, solve for x and identify if it is an extraneous solution.
leonid [27]
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3 years ago
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