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goldenfox [79]
4 years ago
15

7. Identify the reason for each step in the solution.

Mathematics
1 answer:
Alik [6]4 years ago
4 0

Answer:

Distribution is used from steps 1-2

They eliminate 2x by subtracting it on both sides (steps 3-4)

They eliminated 6 by subtracting it from both sides (steps 5-6)

(steps 3-6 is eliminating like-terms)

Thus this leaves the answer being x=-3

Step-by-step explanation:

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Antwan pays $12 per hour to rent a canoe for the afternoon. Which expression represents the total cost of renting the canoe for
AnnyKZ [126]
It would be d, since he will pay $12 per hour, equivalent to 12×h or 12h.
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3 years ago
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A pyramid has a base with a demension 5 inches by 7 inches .The height of the pyramid is unknown .If the volume of the pyramid i
Ulleksa [173]

Answer:

9 inches

Step-by-step explanation:

The volume of a pyramid is given as:

V = \frac{l* w*h}{3}

where l = length of base of pyramid

w = width of base of pyramid

h = height of pyramid

The volume of the cylinder is already known ( 105 in^3 ) and the other two dimensions are known as 5 in and 7 in.

From the formula of the volume of the pyramid, the height of the pyramid is given as:

h = \frac{3V}{l*h}

Hence, the height of the pyramid is:

h = \frac{3 * 105}{5 * 7}\\ \\h = \frac{315}{35} = 9in

The pyramid's height is 9 inches.

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3 years ago
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Select the reason why these triangles are
Fittoniya [83]

Answer:

B. SAS

Step-by-step explanation:

Ratio of sides equal:

4/2= 6/3

So the 2 sides are congruent and also share same angle between.

B. SAS is the similarity reason

7 0
3 years ago
If two expressions have the same factor or base. What happens to the exponents when the expression are dividing
FromTheMoon [43]

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Step-by-step explanation:

6 0
3 years ago
Suppose y varies jointly as x and z. Find y when x=-9 and z=23, if y=117 when x=-3 and z=-11. Round your answer to the nearest h
Andrew [12]

Answer:

The value of y given the values of x and z in the question is -734.85

Step-by-step explanation:

This is a joint variation question.

First, we are made to know that y varies jointly as x and z.

The equation for this can be written as;

y = k * x * z

Where k is the constant of proportionality.

Let’s calculate k first.

117 = k * (-3) * (-11)

33k = 117

K = 117/33 = 3.55

Now, we proceed to get what y is when x = -9 and z = 23

Let’s plug these values into the initial equation written.

y = k * x * z

We use the value of k calculated above;

y = 3.55 * (-9) * (23) = -734.85

4 0
3 years ago
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