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3 years ago

When f(x) = 0.5|x is graphed on a regular coordinate grid, the graph forms

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

Answer:

A. Right angle -- if you multiply the slopes of 2 intersecting lines and you "-1" then the lines are perpendicular - in this case the line in quadrant 3 has a slope of "1" and the line in quadrant 4 has a slope of "-1", hence their product is "-1" and the angles formed at the intersection of the lines are right angles.

Step-by-step explanation:

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Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 60 provided a sample mean of 19.5. The population stand

viva [34]

Answer:

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 60

Sample mean, $\bar{x}$ = 19.5

Sample size, n = 60

Alpha, α = 0.05

Population standard deviation, σ = 1.8

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20\\H_A: \mu < 20$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{19.5 - 20}{\frac{1.8}{\sqrt{60}} } = -2.151$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

5 0

4 years ago

Find the area of the shape shown below?

ohaa [14]

Answer:

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Step-by-step explanation:

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3 years ago

Solve for a. 1 4 -4= 7 29 a - 3 a =

nlexa [21]

Answer:

Step-by-step explanation:

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3 years ago

Use scientific notation to find the product of 20.5 × 10 7 and 0.000036. 73.8 × 10 2

earnstyle [38]

Well its an difficult because I need to get more information

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3 years ago

What is the midpoint between 0.01% and 1%?

lara31 [8.8K]

Change the percentages to decimals. 1%=.01 & .01%=.0001. To find the midpoint subtract the 2 numbers. .01-.0001= .0099. Then divide that answer by 2. .0099/2=.00495. Add that to your smallest original number. .0001+.00495=.00505. That number as a percent is .505%.

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3 years ago