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2 years ago

If 8 times a number is added to twice the number, the result is 60. the solution is

Mathematics

2 answers:

kogti [31]2 years ago

7 0

Answer:

The number is 6

Step-by-step explanation:

Given :-

8N + 2N = 60

To Find :-

Solving :-

8N + 2N = 60

10N = 60

N = 6

Solution :-

The number is 6

Andrei [34K]2 years ago

3 0

Answer:

(8 * x) + 2x = 60

8x + 2x = 60

10x = 60

/10 /10

x = 6

8 is a constant that is being multiplied by an unknown number which we will name x. It is then being added to two times the unknown number(x), so we multiply x by 2, which is 2x. The final product will be 60, so in the equation it'll then equal 60.

We consider "a number" to be a variable that withholds an unknown value, which is x (or any other variable you prefer).

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Find the distance between the points (2, -9) and (-1, 4).

ollegr [7]

Answer:

A. 13.34

Step-by-step explanation:

This is the formula d=√((x_2-x_1)²+(y_2-y_1)²)

Plug in

d=√(-1-2)² + (4+9)²

d= √9 + 169

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6 0

3 years ago

After a researcher adds 5 points to every score in a sample, the standard deviation is found to be s = 10. the original sample h

12345 [234]

A, true.

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3 years ago

The length of a rectangle is twice that of its width. If the area of the rectangle is 72 square inches, then find the length and

Blizzard [7]

Well, we should start by listing the factors

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You can put these in pairs if it will help you,

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If you look, you can see that in only one pair the length is twice the width.

So your answer is

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2 years ago

Problem PageQuestion The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate paramet

asambeis [7]

Answer:

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Step-by-step explanation:

Exponential Model

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The model can be expressed as

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In this case, Mo is the initial mass of the radioactive substance and k is a constant which value is positive if the mass is growing or negative if the mass is decaying.

The value of k is not precisely given in the question, we are assuming $k=-0.2$