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2 years ago

Find the surface area of the cylinder in terms of pi. a.350pi cm b.896pi cm c.602pi cm d.644pi cm

Mathematics

1 answer:

Sliva [168]2 years ago

6 0

Answer:

the surface area of the cylinder in terms of pi=2πrh+2πr² =2×π×7×18+2π×7²=350πwhere

r=radius=7cm

h=height of the cylinder.=18cm

a.350πcm² is your answer

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The______is the set of inputs For a fraction

ExtremeBDS [4]

The set of all input values of a function is the domain of the function

<h3>What is a function?</h3>

A function relates an input to an output.

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1 year ago

Which function has the largest amplitude?

frutty [35]

<h3>Answer: Choice A</h3>

The -3 out front of that function means |-3| = 3 is the amplitude, which is the largest of the four functions.

In general, the sine function is

y = A*sin(B(x-C)) + D

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Cosine has the same format since cosine is just a phase shift of sine.

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3 years ago

John took all his money from his savings account. He spent $110 on a radio and 4/11 of what was left on presents for his friend

svp [43]

Answer:

$1210

Step-by-step explanation:

Let x be total amount

First John spent $110 on a radio and 4/11 of what was left on presents for his friends so he was left with

$\frac{7}{11}(x-110)=\frac{7}{11}x-70$

Then he put 2/5 of his remaining money into a checking account

$\frac{3}{5}\left(\frac{7}{11}x-70\right)$

Rest he donated to charity

$420=\frac{3}{5}\left(\frac{7}{11}x-70\right)\\\Rightarrow \left(\frac{7}{11}x-70\right)=\frac{2100}{3}\\\Rightarrow \frac{7}{11}x-70=700\\\Rightarrow \frac{7}{11}x=770\\\Rightarrow x=1210$

Hence total amount of money John originally had was $1210

8 0

2 years ago

Sally finds a coin with a radius of 1.5 centimeters and a thickness of 0.25 cm. It has a measured mass of 18.54 grams. How can S

mote1985 [20]

Answer:

Silver

Step-by-step explanation:

Find the volume of the coin

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$\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}$

Given:

r = 1.5 cm
h = 0.25 cm

Substituting given values into the formula to find the volume:

$\sf \implies V=\pi (1.5)^2(0.25)$

$\sf \implies V=0.5625 \pi \:cm^3$

Find the density of the coin given it has a measured mass of 18.54 g

<u>Density formula</u>

$\sf \rho=\dfrac{m}{V}$

where:

$\rho$ = density
m = mass
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Given:

m = 18.54 g
$\sf V=0.5625 \pi \:cm^3$

Substituting given values into the density formula:

$\implies \sf \rho=\dfrac{18.54}{0.5625 \pi}$

$\implies \sf \rho=10.49149385\:g\:cm^{-3}$

Given:

$\textsf{Density of Lead}=\sf 11.3\:g\:cm^{-3}$

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Therefore, as $\sf \rho=10.49\:g\:cm^{-3}$ the coin is made from silver.

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1 year ago

DO NOT SEND ME PDFS OR I WILL REPORT ANSWER CORRECTLY FOR BRAINLIEST

Temka [501]

Answer:

D is the answer

Step-by-step explanation:

Because everyone wants smart phones so just make them all smart phones lol

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2 years ago

Read 2 more answers