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elena55 [62]
2 years ago
8

: the mass of an average classroom meter stick is roughly 0. 2 kg.

Mathematics
1 answer:
tatiyna2 years ago
8 0

Using proportions, it is found that it takes 3.5 \times 10^{23} meter sticks to equal the mass of the moon.

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

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, one meter stick has a mass of 0.2 kg. How many meter sticks are needed for a mass of 7 \times 10^{22} \text{kg}? The <em>rule of three</em> is given by:

One meter stick - 0.2 kg

x meter sticks - 7 \times 10^{22} \text{kg}

Applying cross multiplication:

0.2x = 7 \times 10^{22}

x = \frac{7 \times 10^{22}}{0.2}

x = 35 \times 10^{22}

x = 3.5 \times 10^{23}

It takes 3.5 \times 10^{23} meter sticks to equal the mass of the moon.

More can be learned about proportions at brainly.com/question/24372153

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Please check these please
antoniya [11.8K]

-5x=60

The first thing we want to do is to divide -5 on both sides. We do this because -5x, is the same as -5 times x and we want to do the inverse of that.

After we divide on both sides, we get    x=60/-5

We know that 60 divided by -5 is -12.

Therefore our answer is:      x=-12

----------------------------------------------------------------------------------------------------------

5= n + 2

We always want to get the variable to be alone, so if we subtract by 5 we would be doing the opposite of getting the variable alone. Although, if we subtract by 2 on both sides, we would get the variable alone and the answer would be 3=n

Therefore our answer is:       False

----------------------------------------------------------------------------------------------------------

2(x-7)

By looking at this question, we see x being subtracted by 7. Then we see that 2 is being multiplied to that.

Therefore our answer is:        C

----------------------------------------------------------------------------------------------------------

The product of a number and 4 increased by 8

In these types of questions, it's smart to break it up. We will start with the product of a number and 4. We know that a number is a variable and if we look at the multiple choice answers we can see that the variable they chose to use is n. We also know that a product is when numbers get multiplied. So that means 4 and n get multiplied which turns into 4n.

For the other part of the problem, we know that increased by 8 means added my 8. Now that we got our answers, we put then together.


Therefore our answer is:       A    4n+8

----------------------------------------------------------------------------------------------------------

Pls give a like if this helped you!!!

4 0
2 years ago
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Please answer this question for brainliest!
Sati [7]

Answer:

Rectangle C is not similar to the other 2

Step-by-step explanation:

3*2=6

1*2=2


3 0
3 years ago
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ANSWER THIS HURRYYYYYY
gladu [14]

Answer:

I believe its B, sorry if im wrong

Step-by-step explanation:

7 0
3 years ago
The Martin family is comparing the costs of two different cable companies. Direct TV charges a
nikdorinn [45]

Answer:

It would take 5.5 months for the two cable companies to cost the same.

Step-by-step explanation:

50x + 100 = 60x + 45

        -45               -45

50x + 55 = 60x

-50x            -50x

55 = 10x

/10    /10

x = 5.5

 

6 0
3 years ago
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What is the value of x in the equation x + 10 = 13?<br> O-3<br> 03<br> 0 13<br> O 23
gayaneshka [121]

Answer:

3

Step-by-step explanation:

x+10=13

x+10-10=13-10

Simplfiy

x=3

3 0
3 years ago
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