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SVETLANKA909090 [29]

3 years ago

15

Please don't answer if you don't know! I'm really behind on assignments right now and I'm trying to pull myself together and get

it all done with decent grades, so I'm counting on the fact that there are some smart people on here.

2 answers:

nataly862011 [7]3 years ago

8 0

What is the question

Reika [66]3 years ago

8 0

What is the question I could help if I can see it.

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The Big Telescope Company sells circular mirrors. Their largest mirrors have radii of 5 meters and their smallest mirrors have r

pogonyaev

Answer: 1:5

Step-by-step explanation:

Given: The cost of every mirror is proportional to the cube of the mirror's radius.

i.e. $\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{(\text{radii of smallest mirror}^3)}{\text{(radii of largest mirror)}^3}$

Their largest mirrors have radii of 5 meters and their smallest mirrors have radii of 1 meter.

Then,

$\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{1^3}{(5)^3}=\dfrac{1}{125}$

The ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors will be:

$\dfrac{\text{Cost of 25 smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{25\times 1}{125}=\dfrac{1}{5}$

Hence, the ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors = 1:5 .

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2 years ago

What is the kinetic energy of a toy truck with a mass of 0.75kg and a velocity of 4 m/s (Formula: KE= 1/2mv2)

hoa [83]

Answer:6

Step-by-step explanation:

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2 years ago

Given that f(x) = x – 2 and g(x) = x2 + 3x – 4, find (f – g)(x). Question 1 options:A. (f – g)(x) = –x2 –2x + 2 B.(f – g)(x) = x

Katena32 [7]

Answer:

A

Step-by-step explanation:

$(f-g)(x)=f(x)-g(x)\\=(x-2)-(x^2+3x-4)\\=x-2-x^2-3x+4\\=-x^2-4x+2\\$

Therefore, answer is A.

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2 years ago

The product of the roots of 8x2 - 2x = 1 is:<br> -1/8<br> 1/8

Ivahew [28]

Answer:

1/8

Step-by-step explanation:

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2 years ago

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How do you plot 2x + 3y = 12 on a graph?

Bad White [126]

Subtract the 2x and then divide both sides by three, than you will have a linear equation, hope that helps you graph it, if no let me know I’ll try to help from there

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2 years ago