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3 years ago

What is i^2 simplified?

Mathematics

2 answers:

Crank3 years ago

6 0

Negative 1 would be your answer

iren [92.7K]3 years ago

4 0

i²=-1

It"s a basic result of complex number :)

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Which term better describes the populations in the nations of Northern Europe?

Mars2501 [29]

Heterogeneous and homogeneous

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2 years ago

NEED HELP ASAP please

svetlana [45]

Answer:

Step-by-step explanation:

The problem is asking to multiply x-5 by x^2, so we can set it up to distribute the x^2 to both values. The final answer would therefore be x^2(x-5), which is D.

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2 years ago

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What is the answer to 60/5(7-5)

lbvjy [14]

Answer:

Step-by-step explanation:

60/5 (7-5)

= 12(2)

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2 years ago

As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho

Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_c}{E})^2$

, where p = prior estimate of population proportion.

E= Margin of error.

$z_c$ = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = $z_c=1.96$

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61

[∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

$n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2$

Simplify ,

$n=0.2379\times9604=2284.7916\approx2285$

Thus , we need to survey <u>2285</u> Americans .

4 0

3 years ago

Solve for x. 32xy=w. can you please help with this problem

algol [13]

$x =\frac{w}{32y}$

7 0

2 years ago