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eduard
3 years ago
14

131=11-15a can someone plz answer this :)

Mathematics
1 answer:
zloy xaker [14]3 years ago
3 0

Answer:

a = -8

Step-by-step explanation:

to solve this expression 131=11-15a  you will simply combine the terms and then evaluate for the value of a

131=11-15a

collect or combine the like terms

131 - 11 = -15a

120 = -15a

divide both sides by  the coefficient of a which is -15

120/-15 = -15a/-15

-8 = a

a = -8

therefore the value of a in the expression 131=11-15a is equals to -8

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Two of the vertices of a rectangle are (1, −6) and (−8, −6). If the rectangle has a perimeter of 26 units, what are the coordina
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Answer:(x_1,y_1)=(1,-2)

(x_2,y_2)=(-8,-2)

Step-by-step explanation:

Given

Co ordinates of vertices(1,-6) and (-8,-6)

When two points is given then Length of two points is given by

L=\sqrt{\left ( x_2-x_1\right )^2+\left ( y_2-y_1\right )^2}

L=\sqrt{\left ( 1-\left ( -8\right )\right )^2+\left ( -6+6\right )^2}

L=\sqrt{9^2}=9 units

Perimeter of rectangle is =26 units

Let the other side be x

thus

2\left ( x+9\right )=26

x+9=13

x=4 units

therefore to get the other two co ordinates

such that the length of that side is 4 units is

(x_1,y_1)=(1,-2)

(x_2,y_2)=(-8,-2)

Horizontal distance will remain same only vertical distance will change in given co ordinates to obtain the remaining two co ordinates

To verify the above two  distance between two points must be 13 units

6 0
3 years ago
Compare and contrast multiplication prop of equality and inequality
Alex

Answer:

Difference between multiplication property of equality and inequality

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Step-by-step explanation:

7 0
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<h2>Answer:</h2>

<h3><em>x=45degrees</em></h3>

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Evaluating this as a system:

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Step-by-step explanation:

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