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valina [46]
3 years ago
13

ANSWER PLS ITS URGENT NEED DONE IN ONE MIN BUS IS COMING!!!! pls dont let me fail!!!!! (will mark as brainliest)

Mathematics
2 answers:
nalin [4]3 years ago
7 0

Answer:

8.) x = 5, x=-12

9.)x = 5, x = -8

10.)x = -1/5, x = -2

Hope I helped :)

jenyasd209 [6]3 years ago
4 0

Answer:

10. -2, -⅕ = x

9. -8, 5 = x

8. -12, 5 = x

7. -5, 6 = x

Step-by-step explanation:

10. 5{x}^{2} + 11x + 2 = 0 \\  \\ (5{x}^{2} + x) + (10x + 2) = 0 \\ x(5x + 1) + 2(5x + 1) \\  \\ (x + 2)(5x + 1) = 0 \\  \\  -2, \:  - \frac{1}{5} = x

9.

2{x}^{2} + 6x - 80 = 0 \\  \\ (2{x}^{2} + 16x) - (10x - 80) = 0 \\ 2x(x + 8) -10(x + 8) = 0 \\  \\ (x + 8)(2x - 10) = 0 \\  \\  -8, \: 5 = x

8.

{x}^{2} + 8x - 65 = x - 5 \:→ {x}^{2} + 7x - 60 \\  \\ ({x}^{2} - 5x)  + (12x - 60) \\ x(x - 5) + 12(x - 5) \\  \\ (x + 12)(x - 5) = 0 \\  \\ 5, \:  -12 = x

7.

{x}^{2} = x + 30 →  - {x}^{2} + x + 30 \\  \\  (-{x}^{2} - 5x) + (6x + 30) \\  -x(x + 5) + 6(x + 5) \\  \\  -(x - 6)(x + 5) = 0 \\  \\  -5, \: 6 = x

I am joyous to assist you anytime.

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Claire is putting up a fence around her rectangular garden. The length is four less than double the width. The perimeter is 22 f
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Answer:

The dimensions are 6 by 5 feet.

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Width = 5 feet.

Step-by-step explanation:

Let the length = L

Let the width = W

Perimeter of a rectangle = 2L + 2W

Translating the word problem into an algebraic equation, we have;

L = 2W - 4 ........equation 1

22 = 2L + 2W .......equation 2

Substituting the value of "L" into equation 2, we have;

22 = 2(2W - 4) + 2W

22 = 4W - 8 + 2W

22 + 8 = 6W

30 = 6W

W = 30/6

Width, W = 5 feet.

To find the length, L

Substituting the value of "W" into equation 1, we have;

L = 2W - 4

L = 2(5) - 4

L = 10-4

Length, L =6 feet

Therefore, the dimensions of the garden are 6 by 5 feet.

5 0
3 years ago
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Answer:

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Please help!posted picture of question
olchik [2.2K]
Answer:
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Explanation:
We are given that:
f (x) = 4x + 1
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We want to find the value of (g/f)(x). This means that we will simply divide g(x) by f(x) as follows:
( \frac{g}{f} )(x) =  \frac{g(x)}{f(x)} =  \frac{x^2 - 5}{4x + 1}

Now, we should note that any function is undefined if its denominator is equal to zero.
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