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Goshia [24]
3 years ago
14

What is 5x+7=-3-9 what does x represent

Mathematics
1 answer:
Verizon [17]3 years ago
7 0
5x + 7 = -3 - 9

First, simplify -3 - 9 to get -12. / Your problem should look like: 5x + 7 = -12
Second, subtract 7 from both sides. / Your problem should look like: 5x = -12 - 7
Third, simplify -12 - 7 to get -19. / Your problem should look like: 5x = -19
Fourth, divide both sides by 5. / Your problem should look like: x =  -\frac{19}{5}

Answer as fraction: x = - \frac{19}{5}
Answer as decimal: x = -3.8

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Really need help on #15 please.
ollegr [7]

Step-by-step explanation:

Let's call L the length and W the width.  The length is 10 feet longer than the width, so:

L = W + 10

The area is the length times width, so:

119 = LW

Substituting:

119 = (W + 10) W

119 = W² + 10W

0 = W² + 10W − 119

0 = (W + 17) (W − 7)

W = -17 or 7

Since W must be positive, W = 7.

L = W + 10

L = 17

The length and width are 17 feet and 7 feet, respectively.

5 0
4 years ago
The product of 9 and number (x) is 88. Which equation shows this relationship?
Digiron [165]
This equation is
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5 0
4 years ago
Find the area of a triangle with a base of 10 in. and an altitude of 14 in. (The formula for the area of a triangle is A = bh ÷
Vanyuwa [196]

Answer:

The correct option is B.

Step-by-step explanation:

The area of triangle is

A=\frac{1}{2}\times b\times h

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It is given that the base of the triangle is 10 inch and the height of the triangle is 14 inch.

The area of given triangle is

A=\frac{1}{2}\times 10\times 14

A=10\times 7

A=70

Therefore the area of triangle is 70 square inch and the option B is correct.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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