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4 years ago

given measure of angle HGK is equal to the measure of angle JGL prove measure of angle 1 equals the measure of angle 3

Mathematics

1 answer:

mario62 [17]4 years ago

8 0

I feel like there's not enough information to answer this question. was this the whole question?

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(SHOW WORK NEED IT BY TONIGHT! )Write a system of equations to describe the situation below, solve using substitution, and fill

earnstyle [38]

Let X = the number of hours the server works.

The equation for the amount Nick spends is 15x + 47

The next job pays 14x + 54

Set the equations to equal and solve for x:

15x + 47 = 14x +54

Subtract 14x from both sides:

X + 47 = 54

Subtract 47 from both sides:

X = 7

Now replace x with 7 in the second equation:

14x + 54 = 14(7) + 54 = 98 +54 = 152

The job would pay $152 and be 7 hours long.

8 0

4 years ago

Ill give u brainliest pls helpp

dedylja [7]

Answer:

Set B.

Step-by-step explanation:

Not A or C: as x goes up, y goes down. :(

D is correct, but not the best because B's is more clear, as when visualizing the graphs, B's makes a perfect line, as where in D, it is bumpier.

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3 years ago

Kendra is twice as old as Tim. In 10 years, Kendra will be four years older than Tim. How old are Kendra and Tim now?

Gala2k [10]

Kendra is 8 now, tim is 4

5 0

4 years ago

Argyle can read 7 pages of his book in 5 minutes. At that rate, how many pages can he read in two hours?

Inga [223]

The answer should be 85 books per hour so 170 two hours

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4 years ago

A political candidate has asked his/her assistant to conduct a poll to determine the percentage of people in the community that

lorasvet [3.4K]

Answer:

A sample size of 752 is needed.

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 z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

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

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

If the candidate wants a 3% margin of error at a 90% confidence level, what size of sample is needed?

We have no estimate of the proportion, so we use $\pi = 0.5$ .

The sample size is n for which M = 0.03. So

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

$0.03 = 1.645\sqrt{\frac{0.5*0.5}{n}}$

$0.03\sqrt{n} = 1.645*0.5$

$\sqrt{n} = \frac{1.645*0.5}{0.03}$

$(\sqrt{n})^2 = (\frac{1.645*0.5}{0.03})^2$

$n = 751.67$

Rounding up:

A sample size of 752 is needed.

7 0

3 years ago