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2 years ago

Please help me with this geometry question !!

Mathematics

1 answer:

mezya [45]2 years ago

3 0

Answer:

see explanation

Step-by-step explanation:

Given the rule (x, y ) → (x + 5, - y )

Add 5 to the original x- coordinate and make the y- coordinate negative.

(a)

(5, 3 ) → (5 + 5, - 3 ) → (10, - 3 )

(b)

(- 2, 7 ) → (- 2 + 5, - 7 ) → (3, - 7 )

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Twenty-five percent of 200 is what number? O 8 O 20 0 50 0 100

Yakvenalex [24]

Answer:

Step-by-step explanation:

.25 goes into 100 4 times, 50 goes into 200 4 times :)

3 0

2 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

2 years ago

Find the first 5 terms in the following sequence: a1 = 23, a, an-1 + 7, n > 2

sasho [114]

Answer:

Step-by-step explanation:

ok ok ok ok ok ok

6 0

2 years ago

The price of a share of stock increased $3 each week over a 7-week period. What was the total

meriva

Answer:

$21

Step-by-step explanation:

Multiply 7 by 3, since it increased $3 each week for 7 weeks:

7(3)

= $21

So, the total change in the price of a share of stock was $21

6 0

2 years ago

Write 4 4/5 as a whole number

zhenek [66]

The fraction 4 4/5 cannot be represented as whole number

<h3>How to write 4 4/5 as a whole number?</h3>

The number is given as:

Number = 4 4/5

The above number is a fraction, where the denominator is a not 1

Fractions that have denominators not 1, and fractions that do not have equal numerator and denominator cannot be represented as whole numbers

This means that:

4 4/5 cannot be represented as whole numbers

Hence, the fraction 4 4/5 cannot be represented as whole number