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worty [1.4K]
3 years ago
9

Help me with this i only have 10 mis left

Mathematics
1 answer:
Tpy6a [65]3 years ago
4 0

Answer:

It's definitely C

Step-by-step explanation:

Boston is 35 degrees as well but the lowest temperature of Seattle is 45

You might be interested in
Which polynomial can be factored using the binomial theorem?
Galina-37 [17]

Answer:

Step-by-step explanation:

I think the one you want is the last one, but I've never called it that.

21x^2 + 147x + x^3 + 343

x^3 + 343 is a cubic binomial. It factors into (x + 7) (x^2 - 7x + 49)

21x(x + 7) + (x + 7)(x^2 - 7x + 49)

(x + 7) [ 21x - 7x + x^2 + 49)

(x + 7) [x^2 + 14x + 49]

(x + 7) ( x+7)^2

(x + 7)^3

It's the only answer that does factor. There must be a simpler way of doing it, but this will give you the right answer.

4 0
3 years ago
Find the area of a 3/4 circle with a raidius of 6
Whitepunk [10]

Answer:

84.82275

Step-by-step explanation:

The formula for Area of a circle is

A=\pi r^{2} \\A=\pi 6^{2} \\A=113.097

That would be for the entire circle, now divide that number by .75 to get 3/4 of the circle.

84.82275

6 0
3 years ago
I WILL GIVE BRAINLIST PLZZZ 50PTS
makvit [3.9K]
You didn’t give us enough info but I will say C.
7 0
3 years ago
Read 2 more answers
I need someone to explain this step by step. I have a test very soon.
8090 [49]

Answer:

So you are going to multiply what is in the parentheses by two it will become 6x + 4.This will be for the second statement box. And the next will be 6x=18 and that will be the subtraction property or equality. For the last it would be x=3 and that would be the division property of equality.  

Step-by-step explanation:

8 0
3 years ago
Katrina wants to estimate the proportion of adults who read at least 10 books last year. To do​ so, she obtains a simple random
kicyunya [14]

Answer:

D. Matthew's estimate will have the smaller margin of error because the larger sample size more than compensates for the higher level of confidence

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 interval 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}.

The margin of error is the division by 2 of the upper level of the interval \pi + z\sqrt{\frac{\pi(1-\pi)}{n}} by the lower level \pi - z\sqrt{\frac{\pi(1-\pi)}{n}}, so this is

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

Both Katrina and Matthew are working with the same population, so \pi is equal for both.

Katrina

Katrina wants to estimate the proportion of adults who read at least 10 books last year. To do​ so, she obtains a simple random sample of 100 adults and constructs a​ 95% confidence interval. This means that she has z = 1.96 and n = 100. So her margin of error is

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

M = (1.96)\sqrt{\frac{\pi(1-\pi)}{100}}

M = 0.196\sqrt{\pi(1-\pi)}

Matthew

He obtains a simple random sample of 400 adults and constructs a​ 99% confidence interval.

This means that, for Matthew, z = 2.575, n = 400. So his margin of error is:

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

M = (2.575)\sqrt{\frac{\pi(1-\pi)}{20}}

M = 0.12875\sqrt{\pi(1-\pi)}

Higher confidence levels usually led to higher margins of error. However, Matthew's larger sample size compensates his higher confidence level.

So the correct answer is:

D. Matthew's estimate will have the smaller margin of error because the larger sample size more than compensates for the higher level of confidence

5 0
3 years ago
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