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Digiron [165]
3 years ago
12

X divided by x+3 equals 4 divided by x+5

Mathematics
1 answer:
noname [10]3 years ago
4 0

Answer:

x=-4, 3.

Step-by-step explanation:

x/(x+3)=4/(x+5)

cross product

4(x+3)=x(x+5)

4x+12=x^2+5x

x^2+5x-4x-12=0

x^2+x-12=0

factor out the trinomial,

(x+4)(x-3)=0

zero property,

x+4=0, x-3=0,

x=0-4=-4

x=0+3=3

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The multiplication property of equality could be used to solve which of the following equations
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Answer:

The Multiplication Property of Equality states that if you multiply both sides of an equation by the same number, the sides remain equal.

Step-by-step explanation:

so for example if a=b then a x c=b x c

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6 0
2 years ago
A park is mapped on a coordinate plane, where C1, C2, C3, and C4 represent chairs and SW1, SW2, and SW3 represent swings. How fa
serg [7]

Answer:

Option (B)

Step-by-step explanation:

To calculate the distance between C2 and SW1 we will use the formula of distance between two points (x_1,y_1) and (x_2,y_2).

d = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^2 }

Coordinates representing positions of C2 and SW1 are (2, 2) and (-6, -7) respectively.

By substituting these coordinates in the formula,

Distance between these points = \sqrt{(-6-2)^2+(-7-2)^2}

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Therefore, Option (B) will be the correct option.

5 0
3 years ago
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Step-by-step explanation:

For it to be a function, each value of x has to map onto one value of y.

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7 0
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3 years ago
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3 years ago
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