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mixas84 [53]
2 years ago
9

How can i solve them

Mathematics
1 answer:
Mariulka [41]2 years ago
4 0

Answer:

2x²+x-15=0

Step-by-step explanation:

A=L×W

12cm²=(2x+3)(x-1)

12=2x²-2x+3x-3

12=2x²+x-3

2x²+x-3-12=0

2x²+x-15=0

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Find the inverse please and thank you
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The inverse f^{-1}(x) is such that

f\left(f^{-1}(x)\right) = x

We have

f\left(f^{-1}(x)\right) = -9\sqrt{f^{-1}(x) - 8} + 5 = x

Solve for the inverse.

-9\sqrt{f^{-1}(x)-8} + 5 = x \\\\ -9\sqrt{f^{-1}(x)-8} = x-5 \\\\ \sqrt{f^{-1}(x)-8} = -\dfrac{x-5}9 \\\\ \left(\sqrt{f^{-1}(x)-8}\right)^2 = \left(-\dfrac{x-5}9\right)^2 \\\\ f^{-1}(x) - 8 = \dfrac{(x-5)^2}{81} \\\\ \boxed{f^{-1}(x) = 8 + \dfrac{(x-5)^2}{81}}

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2 years ago
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skelet666 [1.2K]

3a + ( - 6)

6 0
3 years ago
Find the distance between the set of points (-4,5) and (4,0)
Anettt [7]

Answer:

√89

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8 0
3 years ago
The lengths of the sides of a triangle are 15 cm, 20 cm, 30 cm. What are the lengths of the sides of a similar triangle that has
faust18 [17]

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Step-by-step explanation:

add the perimeter of the first triangle to get 65

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then divide all the side lengths by 2.5

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6 0
4 years ago
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3 0
3 years ago
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