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Talja [164]
3 years ago
6

When simplifying the expression 4x^2 – 7x - _x, what value should go in the blank so that the result is 3x^2 – 5x?

Mathematics
1 answer:
Blababa [14]3 years ago
7 0
Pretty sure it’s -2 i’m sorry if it’s wrong tho
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Factor completely 5c5 + 60c4 + 180c3.
Mrac [35]
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8 0
3 years ago
The Insure.com website reports that the mean annual premium for automobile insurance in the United States was $1,503 in March 20
stira [4]

Answer:

a) Option A)

H_{0}: \mu \geq 1503\\H_A: \mu < 1503

b) Point estimate of difference = -78

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $1,503

Sample mean, \bar{x} = $1,425

Sample size, n = 25

Sample standard deviation, s = $160

We have to carry a hypothesis test that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

a) First, we design the null and the alternate hypothesis

H_{0}: \mu \geq 1503\text{ dollars}\\H_A: \mu < 1503\text{ dollars}

b) Point estimate  of the difference between the mean annual premium in Pennsylvania and the national mean

Point estimate of difference =

Mean annual premium in Pennsylvania - National mean

\text{Point estimate} = \bar{x} - \mu = 1425 - 1503 = -78

Thus,

Point estimate of difference = -78

5 0
4 years ago
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Fynjy0 [20]

Answer: A

Step-by-step explanation: A is the best answer becauuse your whole refrigerator is covered.

4,819.99

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3 years ago
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