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ozzi
3 years ago
12

-7x+3y=30 find the value of y whenx is 0

Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0
Substitute 0 to x

-7(0)+3y = 30

0 + 3y = 30

Of course, solve for y now

3y = 30

Since the y is multiplied for 3, divide both terms for 3

3y/3 = 30/3

y = 10
kirill115 [55]3 years ago
4 0
0 + 3y = 30
3y = 30
y = 10
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The correct option is 4.

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Parallelogram is a quadrilateral which has opposite sides equals and parallel. Example of a parallelogram are rhombus, rectangle, square etc.

We can prove that a quadrilateral MNOP is a parallelogram. If we find the slopes of all four sides and compare those of the opposite ends, same slopes would indicate the opposite sides are parallel, hence the quarilateral is a parallelogram. We can also find the distance of two opposing sides, and slopes of twp opposing sides to determine whether it is a parallelogram or not. The most difficult approach is that diagonals bisect each other at same point.

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The length is 16 ft, and the width is 3 ft.

Step-by-step explanation:

Let L = length & let W = width.

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A = LW

We know the perimeter and the area, so we substitute those values int he equations above and we switch sides in both equations.

Perimeter: 2(L + W) = 38

Divide both sides by 2:

L + W = 19

Area: LW = 48

We have a system of two equations in two unknowns:

L + W = 19

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Solve the first equation for L and substitute it into the second equation.

L = 19 - W

(19 - W)W = 48

19W - W^2 - 48 = 0

Multiply both sides by -1, and rearrange the order of the terms.

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