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3 years ago

Write 2,784 in expanded notation as a addition expression.

Mathematics

1 answer:

vesna_86 [32]3 years ago

3 0

2 x 1000
+7 x 100
+8 x 10
+4 x 1 
2784

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What’s the answer? I’m seriously confused...

Tasya [4]

Answer:

She would pay $36.36 to cover the whole box.

Step-by-step explanation:

You need to find the area of all sides of the box and add them together first.

So, 8x6 = 48

48x2 = 96 (Two of the same sides)

6x11 = 66

66x2 = 132 (Two of the same sides)

8x11 = 88

88x2 = 176 (Two of the same sides)

Add all of those together to get 404 sq inches.

Multiply 404 x 0.09 (the 9 cents) to get your answer of $36.36! Hope this helped!

4 0

3 years ago

A survey of 300 union members in New York State reveals that 112 favor the Republican candidate for governor. Construct the 98%

Luden [163]

Answer:

a) z = 2.327

b) The margin of error is of 0.065.

c) The 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate is (0.3083, 0.4383).

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

For this problem, we have that:

$n = 300, \pi = \frac{112}{300} = 0.3733$

a) 98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $z = 2.327$ is the critical value.

The margin of error is:

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

So, applying to this question:

$M = 2.327\sqrt{\frac{0.3733(1-0.3733)}{300}} = 0.065$

The margin of error is of 0.065.

c) Find confidence interval for the problem.

$\pi - M = 0.3733 - 0.065 = 0.3083$

$\pi + M = 0.3733 + 0.065 = 0.4383$

The 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate is (0.3083, 0.4383).

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3 years ago

Tributive Property each of the following. Show for what val x - 2(x - 2) = X

levacccp [35]

Answer:

Step-by-step explanation:

Subtraction is not commutative. For example, 4 − 7 does not have the same difference as 7 − 4. The − sign here means subtraction.

However, recall that 4 − 7 can be rewritten as 4 + (−7), since subtracting a number is the same as adding its opposite. Applying the commutative property for addition here, you can say that 4 + (−7) is the same as (−7) + 4. Notice how this expression is very different than 7 – 4.

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3 years ago

Solve for x It is geometry so anyone got it?

Sauron [17]

Answer:

X=26

Step-by-step explanation:

180-105=75

26•2=52. 52+23=75°

7 0

3 years ago

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