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3 years ago

I got a bunch of questions under my account if someone just wants to do some work

Mathematics

1 answer:

Sliva [168]3 years ago

8 0

Answer:

Alr

Step-by-step explanation:

Brainliest???

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Simplify (-2x^3)^2·y·y^9 -4x^6y^8 -4x^4y^8 4x^6y^10 -4x^4y^10<br><br> Answer: 4x^6y^10

Veseljchak [2.6K]

I don’t know I want points

7 0

3 years ago

For a car moving at a constant speed, the distance traveled varies directly with the time spent driving. If such a car travels 2

ipn [44]

Answer:

120 miles.

Step-by-step explanation:

Use long division to find how many miles the car travels in 1 hour then we multiply by 4

: (7÷210=30)×4=120miles. Hope this helped ;D

6 0

3 years ago

A Gallup Poll used telephone interviews to survey a sample of 1030 U.S. residents over the age of 18 regarding their use of cred

Vlada [557]

Answer:

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

72% of Americans said that they had at least one credit card

This means that $p = 0.72$

Give the 95% margin of error for this estimate.

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

$M = 1.96\sqrt{\frac{0.72*0.28)}{1030}} = 0.0274$

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

7 0

4 years ago

Will I lose points when use brainly plus to ask questions?

dlinn [17]

Answer:

yes

hope this helps!!

6 0

3 years ago

What is the square root of 377.68

prohojiy [21]

Answer:

19.4339908408

3 0

3 years ago

Read 2 more answers