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guajiro [1.7K]
3 years ago
5

-4x + 3y + 2x = what does this equal?

Mathematics
2 answers:
Helga [31]3 years ago
5 0

Answer:

−2x+3y

Step-by-step explanation:

-4x+3y+2x

combine like terms

-4x+2x=-2x

since there's nothing else to combine the answer is

-2x+3y

hope this helps

Alex Ar [27]3 years ago
3 0
The answer is -2x+3y
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In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time coll
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a) n = 1037.

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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}}

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We need to find n when M = 0.04.

We dont know the percentage to be estimated, so we use \pi = 0.5, which is when we are going to need the largest sample size.

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

0.04 = 2.575\sqrt{\frac{0.5*0.5}{n}}

0.04\sqrt{n} = 2.575*0.5

(\sqrt{n}) = \frac{2.575*0.5}{0.04}

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(b) Assume prior studies have shown that about 55​% of​ full-time students earn​ bachelor's degrees in four years or less.

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0.04\sqrt{n} = 2.575*\sqrt{0.55*0.45}

(\sqrt{n}) = \frac{2.575*\sqrt{0.55*0.45}}{0.04}

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n = 1025.7

Rounding up

n = 1026.

6 0
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