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3 years ago

Given that a × 70 = b work out the value of Your final line should say, 3b/a =...

Mathematics

1 answer:

alukav5142 [94]3 years ago

8 0

a/q b/a=70 so ans will be 210

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What is this answer! (-3)(8)

Vladimir [108]

Answer to question:

-24

7 0

3 years ago

Read 2 more answers

Approximate the change in the volume of a sphere when its radius changes from r = 40 ft to r equals 40.05 ft (Upper V (r )equal

alexgriva [62]

Answer:

The change in the volume of a sphere whose radius changes from 40 feet to 40.05 feet is approximately 1005.310 cubic feet.

Step-by-step explanation:

The volume of the sphere ( $V$ ), measured in cubic feet, is represented by the following formula:

$V = \frac{4\pi}{3}\cdot r^{3}$

Where $r$ is the radius of the sphere, measured in feet.

The change in volume is obtained by means of definition of total difference:

$\Delta V = \frac{\partial V}{\partial r}\Delta r$

The derivative of the volume as a function of radius is:

$\frac{\partial V}{\partial r} = 4\pi \cdot r^{2}$

Then, the change in volume is expanded:

$\Delta V = 4\pi \cdot r^{2}\cdot \Delta r$

If $r = 40\,ft$ and $\Delta r = 40\,ft-40.05\,ft = 0.05\,ft$ , the change in the volume of the sphere is approximately:

$\Delta V \approx 4\pi\cdot (40\,ft)^{2}\cdot (0.05\,ft)$

$\Delta V \approx 1005.310\,ft^{3}$

The change in the volume of a sphere whose radius changes from 40 feet to 40.05 feet is approximately 1005.310 cubic feet.

7 0

3 years ago

One leg of a right triangle is 4 less than the other leg. The square of the hypotenuse of the right triangle is 80. How long are

Hitman42 [59]

I hope this helps you

6 0

4 years ago

On Saturday, 45% of the music Brianna listened to was country songs. She listened to 27 country songs on Saturday. How many song

Arte-miy333 [17]

Answer:

60 songs.

Step-by-step explanation:

The percentages there are an equal sign so

0.45x=27

x=60

So Brianna listened to 60 songs!

5 0

3 years ago

If it took Carlos 1/2 hour to cycle from his house to the library yesterday, was the distance that he cycled greater than 6 mile

Dvinal [7]

Answer:

Step-by-step explanation:

Given

time taken by Carlos to cycle is $t=0.5\ hr$

For case (1)

Average speed $v_{avg}>16\ ft/s$

For $0.5 hr \approx 30\times 60=1800\ s$

Distance traveled $d=1800\times 16=28,800\ ft\approx 5.45\ miles$

Therefore Carlos might not be able to cover 6 miles with average speed of 16 ft/s

(2) $v_{avg}=18\ ft/s$

for 0.5 hr

distance traveled

$d=1800\times 18=32,400\ ft\approx 6.136$

Therefore Carlos might be able to cover more than 6 miles with $18\ ft/s$

5 0

3 years ago