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3 years ago

Which is the image of -2,5 reflected across x=2?

Mathematics

1 answer:

Basile [38]3 years ago

3 0

Answer:

6,5

Step-by-step explanation:

-2 is 4 down from 2, so reflected should be 4 up, or 6

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Match the verbal description to the correct expression.

dusya [7]

Answer:

1. n + 34

2. n - 34

3. n × 34

Step-by-step explanation:

1. 34 more than a number n + 34

2. a number decreased by 34 n - 34

3. the product of a number and 34 n × 34

6 0

3 years ago

What is 42= -7 × (z - 3)?

Agata [3.3K]

Answer:

z=-3

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was

andrezito [222]

Answer:

The 92% confidence interval for the true proportion of customers who click on ads on their smartphones is (0.3336, 0.5064).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 100, p = 0.42$

92% confidence level

So $\alpha = 0.08$ , z is the value of Z that has a pvalue of $1 - \frac{0.08}{2} = 0.96$ , so $Z = 1.75$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 1.75\sqrt{\frac{0.42*0.58}{100}} = 0.3336$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 1.75\sqrt{\frac{0.42*0.58}{100}} = 0.5064$

The 92% confidence interval for the true proportion of customers who click on ads on their smartphones is (0.3336, 0.5064).

4 0

4 years ago

A rectangular swimming pool is 8 ft deep. One side of the pool is 4.5 times longer than the other. The amount of water needed to

AysviL [449]

Answer:

<h2> length= 42, width=12, depth=8</h2>

Step-by-step explenation:

8 0

3 years ago

Given B is between A and C, find the value of x if AB = 27, BC = 11x, and AC = 159

True [87]

Answer:

Step-by-step explanation:

Since, B is between A and C.

$\therefore AB + BC=AC \\ 27 + 11x = 159 \\ 11x = 159 - 27 \\ 11x = 132 \\ x = \frac{132}{11} \\ x = 12$

3 0

3 years ago