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Irina18 [472]
3 years ago
9

Can someone please help me this? Math 8

Mathematics
1 answer:
Viefleur [7K]3 years ago
5 0

Answer:

5x + ( - 8)x + 9 + ( - 4) \\ 5x - 8x + 9 - 4 \\  - 3x + 5

this is the solution

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Do this and you’ll get 25 points
MrRissso [65]

Answer:

1

Step-by-step explanation:

m= (y-y1)/(x-x1)

Points are  (-10, -20) and (1, -9)

m= (-20+9)/(-10-1)= (-11)/(-11)= 1

m=1 to replace ? mark

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What is the exponential function for:<br><br> x = 0, 1, 2, 3<br><br> f(x) = 0.5, 1, 2, 4
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Answer:

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2 years ago
What is the inverse of f(x)= 3x-9
JulsSmile [24]

If f^{-1}(x) is the inverse of f(x), then

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

Given

f(x) = 3x-9

composing with the inverse function gives

f\left(f^{-1}(x)\right) = 3f^{-1}(x) - 9 = x

Solve for the inverse:

3f^{-1}(x)-9 = x \\\\ 3f^{-1}(x) = x+9 \\\\ \boxed{f^{-1}(x) = \dfrac x3 + 3}

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Suppose we are interested in bidding on a piece of land and we know one other bidder is interested. The seller announced that th
ira [324]

a. Suppose you bid $11,500. What is the probability that your bid will be accepted?

b. Suppose you bid $13,500. What is the probability that your bid will be accepted?

Answer:

a. 0.392

b. 0.784

Step-by-step explanation:

Given

a = 9,500 , b = 14,600

The probability density function is given by 1 divided by the interval between a and b.

f(x) = 1/(b - a)

f(x) = 1/(14,600 - 9,500)

f(x) = 1/5100

f(x) = 0.000196

a. Suppose you bid $11,500. What is the probability that your bid will be accepted?

This is given by the integration of f(x) over the interval in the probability

I.e.

P(x < 11,500) = Integral of 0.000196dx, where upper bound = 11,500 and lower bound = 9,500

Integrating 0.000196dx gives

0.000196x introducing the upper and lower bound.

We get

0.000196(11,500 - 9,500)

= 0.392

b. Suppose you bid $13,500. What is the probability that your bid will be accepted?

This is given by the integration of f(x) over the interval in the probability

I.e.

P(x < 13,500) = Integral of 0.000196dx, where upper bound = 13,500 and lower bound = 9,500

Integrating 0.000196dx gives

0.000196x introducing the upper and lower bound.

We get

0.000196(13,500 - 9,500)

= 0.784

8 0
3 years ago
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