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2 years ago

Solve the system of equations. 6x−y=−14 2x−3y=6 whats the answer please C:

Mathematics

1 answer:

TEA [102]2 years ago

3 0

Answer:

Step-by-step explanation:

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A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len

Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

$Area = 135yd^2$

$L=3W - 12$

Required

Determine the length of the rectangle:

Area is calculated as thus:

$Area = L * W$

Substitute 3W - 12 for L and 135 for Area

$135= (3W - 12) * W$

$135= 3W^2 - 12W$

Reorder:

$3W^2 - 12W - 135= 0$

Divide through by 3

$W^2 - 4W - 45 = 0$

Expand:

$W^2 - 9W + 5W - 45 = 0$

$W(W - 9) + 5(W - 9) = 0$

$(W + 5)(W-9) = 0$

$W + 5 = 0$ or $W - 9 = 0$

$W = -5$ or $W = 9$

But width can't be negative

So:

$W = 9$

Recall that: $L=3W - 12$

$L = 3 * 9 - 12$

$L = 15$

<em>Hence, the length 15 yards</em>

4 0

3 years ago

F(x)=x2-x+2;f(1) ???

zheka24 [161]

I think it is...
F(1)=1(2)-1+2 which equals -1
I'm not sure tho

6 0

3 years ago

Read 2 more answers

Does the point (7 5) satisfy the equation y = x + -2

masha68 [24]

Answer:

Yes

Step-by-step explanation:

7 = x

5 = y

5 = X + - 2

5 = X - 2

If X is 7 then

5 = 7-2

5=5

yes

3 0

2 years ago

The sum of 4 consecutive number is 330 what is the sum of the largest and the smallest number

Drupady [299]

X + x + 1 + x + 2 + x + 3 = 330
4x + 6 = 330
4x = 324, x = 81
Smallest number: 81
Biggest number: 81 + 3 = 84
Sum: 81 + 84 = 165
The answer is 165

3 0

2 years ago

Which values are solutions to the inequality shown in the picture?

Olenka [21]

Answer:

Step-by-step explanation:

4 0

3 years ago