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Rainbow [258]
3 years ago
7

What is the solution of 7x + 14 - 3x = 30? O A. 4 o B. -11

Mathematics
2 answers:
max2010maxim [7]3 years ago
7 0
X = 4

7(4)+14-3(4)=30

7(-11)+14-3(-11)=-30

So, 4 is the answer because when substituted for X, it gives you 30.
stepan [7]3 years ago
5 0

Answer:

A=4

Step-by-step explanation:

7x+14-3x=30

collect the like terms 7x-3x=4x than

it's gonna be 4x+14=30 and move constant to the right side and change its sign 4x=30-14 and subtract 30-14=16

4x=16 and divide both sides of the equation by 4

it's gonna be x=4

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Step-by-step explanation:

8 0
3 years ago
Pleaseeee helpppppppppp
o-na [289]

Answer:

25 ft^2

Step-by-step explanation:

In direct variation, if y varies directly with x, then the equation has the form

y = kx,

where k is the constant of proportionality. y is proportional to x.

Let's call the area y and the distance x.

Here, the area varies with the square of the distance, so the equation has the form

y = kx^2

Here, y is proportional to the square of x.

We can find the value of k by using the given information.

y = kx^2

When x = 20 ft, y = 16 ft^2.

16 = k(20^2)

k = 16/400

k = 1/25

The equation of the relation is:

y = (1/25)x^2

Now we use the equation we found to answer the question.

What is y (the area) when x (the distance) is 25 ft?

y = (1/25)x^2

y = (1/25)(25^2)

y = 25

Answer: 25 ft^2

5 0
2 years ago
Graph the systems of equations to find the solution.
frutty [35]
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7 0
3 years ago
Identify all the intercepts for the following function
Triss [41]
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3 years ago
3 to the power of 2 + (15 ÷ 5 × 6) − 49
grin007 [14]

Answer:

i think its -31

Step-by-step explanation:

thats what i got

hope this helps :)

7 0
3 years ago
Read 2 more answers
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