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den301095 [7]
3 years ago
6

Why is 4 + (−3) equal to 1? Because it is 3 units to the right of 4 on a horizontal number line Because it is 3 units to the lef

t of 4 on a horizontal number line Because it is 3 units to the right of 0 on a horizontal number line Because it is 3 units to the left of 0 on a horizontal number line
Mathematics
2 answers:
STALIN [3.7K]3 years ago
8 0
It is the same as 4-3
Mice21 [21]3 years ago
8 0
4 + (-3) is the same as saying  4-3
the correct answer is :  Because it is 3 units to the left of 4
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The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate
Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

The margin of error is:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

Given:

\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90

The critical value of <em>z</em> for 90% confidence level is:

z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645 *Use a standard normal table.

Compute the sample size required as follows:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910

Thus, the sample size required is 910.

5 0
3 years ago
Jan and two of her friends raised money by having a bake sale. They split the proceeds. If each person received $32.19, how much
AveGali [126]

Answer: 1. Equation =3x = M , where x = money each received and M= total money received.

2.total money from bake sale=$96.57

Step-by-step explanation:

STEP 1

Let the total money receive from proceeds be = M

and let the amount of money each receive after the split  = x

Since   Jan and her two friends raised the money together, the total proceeds will be calculated using the equation

x+x+x= M

3 x = M ---- Equation

STEP 2--- Solving

if 3 x= M

and x =mount of money each receive after the split=$32.19

Therefore total money from bake sale, M = 3x = 3 x 32.19 = $96.57

7 0
2 years ago
Read 2 more answers
What is 66 tens - 30 tens
jek_recluse [69]

Answer:

66

-30

___

36

Step-by-step explanation:

The answer is 36 do 66 minus 36.

4 0
3 years ago
Find the volume of the following figure. <br><br> 6 cm3 <br> 7 cm3 <br> 8 cm3 <br> 5 cm3
Cerrena [4.2K]

Answer:

7 cm³

Step-by-step explanation:

Assume each cube has an edge 1 cm in length.

Each cube has volume 1 cm³.

There are 7 cubes.

volume = 7 cm³

5 0
2 years ago
What is the perimeter of a square with an area of 81 cm2
tatyana61 [14]

Answer:

36 cm

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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