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3 years ago

10

A step function h(x) is represented by y = –2⌊x⌋. Which phrase best describes the range of the function h(x)? all real numbers a

ll rational numbers all negative integers all even integers

2 answers:

shtirl [24]3 years ago

5 0

Answer:

answer is d

Step-by-step explanation:

just took the test, got it right

sasho [114]3 years ago

5 0

Answer:

D) all even integers

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Wendy walked 2miles in 30 minutes. At this rate, how many miles could Wendy walk in 90 minutes

Vlad1618 [11]

Answer:

6 miles in 90 minutes

Step-by-step explanation:

Since wendy is walking at a fair constant rate, you would multiply 3x30 to get 90 minutes and you will multiply 2x3 to get 6 miles

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3 years ago

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The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000

mel-nik [20]

Answer:

0.018 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 60,000 miles

Standard Deviation, σ = 1500 miles

We are given that the distribution of tread life is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(brand will last between 56,850 miles and 57,300 miles)

$P(56850 \leq x \leq 57300) = P(\displaystyle\frac{56850 - 60000}{1500} \leq z \leq \displaystyle\frac{57300-60000}{1500}) = P(-2.1 \leq z \leq -1.8)\\\\= P(z \leq -1.8) - P(z < -2.1)\\= 0.0359 - 0.0179 = 0.018= 1.8\%$

$P(56850 \leq x \leq 57300) = 1.8\%$

0.018 is the probability a certain tire of this brand will last between 56,850 miles and 57,300 miles.

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4 years ago

What is reciprocal of the fraction in the equation 3/5(2x+8)=18?

frutty [35]

9514 1404 393

Answer:

5/3

Step-by-step explanation:

The reciprocal of any fraction is obtained by swapping the numerator and denominator, turning it "upside down."

the reciprocal of the fraction 3/5 is 5/3

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3 years ago

What is the result if you divide –12x8y8 by 3x4y2?

krok68 [10]

<span>When dividing two numbers with the same base but with different powers, you subtract the second power from the first and keep the base. So in our case, -12*x^8*y^8 / 3*x^4*y^2 = -4*x^4*y^6. The correct answer is d.</span>

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3 years ago

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WILL MARK BRAINLIEST <br> PLEASE HELP x

polet [3.4K]

Answer:

3. time = 6.4999 approximately 6.5 years

4. $2235.35

5. $ 3950

Step-by-step explanation:

4. amount of interest = final amount - principle= 7535.35 - 5300 = 2235.35

5. principle = final amount - interest earned = 4435.25 - 485.25 = 3950

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4 years ago