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3 years ago

A cyclist travels 10 km from home to the park.

Mathematics

1 answer:

alisha [4.7K]3 years ago

5 0

Answer:

20 km/h

Step-by-step explanation:

the total time is 0.5 hours as the cyclist travels for 30 minutes

the formula for speed is distance travelled divided by time taken which gives us 20 km/hr

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Ksju [112]

Hi there!

$R = \frac{2.1}{sin 67.5}$

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(A)

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3 years ago

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What is the following simplified product? Assume x>0.

tensa zangetsu [6.8K]

Answer:

$24x ^{3} \sqrt{5 - 4x ^{3} } \sqrt{10x}$

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3 years ago

Please help with this question!! I need serious help!!

asambeis [7]

Answer:

<h2>The circumference is multipled by 4.</h2>

Step-by-step explanation:

The formula of an area of a circle"

$A=\pi r^2$

The formula of a circumference of a circle:

$C=2\pi r$

The area multipled by 16:

$16A=16\pi r^2\\\\16A=\pi(4^2r^2)\\\\16A=\pi(4r)^2$

The radius has increased fourfold, therefore:

$C'=2\pi(4r)=4(2\pi r)=4C$

The circumference is multipled by 4.

You can calculate the area and check the circumference:

$r=11.6\ in\\\\A=\pi(11.6)^2=132.56\pi\\\\16A=(16)(134.56\pi)=2152.96\pi\ in^2$

Calculate the radius:

$\pi r^2=2152.96\pi$ <em>divide both sides by π</em>

$r^2=2152.96\to r=\sqrt{2152.96}\\\\r=46.4\ in$

Calculate the circumference of both circles:

$r=11.6\ in\\\\C=2\pi(11.6)=23.2\pi\ in$

$r=46.4\ in\\\\C'=2\pi(46.4)=92.8\pi\ in$

$\dfrac{C'}{C}=\dfrac{92.8\pi}{23.2\pi}=4\to C'=4C$

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3 years ago

Find the volume of the following figure using unit cubes.

krok68 [10]

Answer:

<h2> 64 units³</h2>

Step-by-step explanation:

2 units × 4 units × 8 units = 64 units³

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3 years ago

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BARSIC [14]

Your answer is at the top good luck!

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3 years ago