What is the answer to -7(-3n 2)?

Mathematics

1 answer:

sergey [27]2 years ago

8 0

21n+14 you have to find the value of n

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The mean amount of water in 5 containers is 620 ml the total amount of water in 4 q of the containers is 2750 what is the amount

EleoNora [17]

The correct answer is:

350 ml.

Explanation:

Let x be the amount in the fifth container.

The mean is found by adding all of the amounts together and dividing by the number of containers (in this problem, 5). We know that the total from the other 4 containers is 2750; add this to x, our unknown number. Then we divide by 5 to arrive at our answer of 620.

Algebraically,
 $\frac{2750+x}{5}=620$ 

To solve, multiply both sides by 5:
 $\frac{2750+x}{5}\times 5=620\times 5
\\
\\2750+x=3100$ 

Subtract 2750 from both sides:
2750+x-2750=3100-2750
x=350.

There are 350 ml in the fifth container.

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In the figure, PQ is parallel to RS. The length of PQ is 2 cm; the length of

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Answer:

Step-by-step explanation:

Parallel lines in this kind of triangle are always in a strict ratio of small to large or large to small based on how you look at it. So we have 4cm to 6cm, which is 2:3 ratio. We know the smaller side, but want the larger side, so we can set up 2/3 = 10/? the ? is 15.

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Activity 1 Calculate the following: 1. 68% of 418,

il63 [147K]

Answer:

284.24

Step-by-step explanation:

by multiplying 0.68 to 418 we get 68% of 418

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Translations Use the translation (x,y)(x+5,y-9) for questions 1-7. 1. What is the image of A(-1,3)? 2. What is the image of B(2,

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Answer:

The answer is c hopes this helps

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What type of function is represented by the table of values below? 8 12 16 20

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Answer:

To be precise, I think it's a pattern question, where you have to add 4 to each number. I'm not very sure though.

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