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3 years ago

12

What is five more than a number is 17

1 answer:

NeTakaya3 years ago

6 0

5 + n = 17 that is what the equation would look like but if you wish to solve for the variable n then you would subtract 17 - 5 = 12, so that is the answer so tecnically I just gave you the answer to 2 questions please let me know if it helps.

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The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana should be made legal. If we w

Sati [7]

Answer:

The sample size is $n = 600$

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 0.48$

The margin of error is $MOE = 0.04$

Given that the confidence level is 95% the level of significance is mathematically represented as

$\alpha = 100 - 95$

$\alpha = 5 \%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table , the values is

$Z_{\frac{\alpha }{2} } = 1.96$

The reason we are obtaining critical value of $\frac{\alpha }{2}$ instead of $\alpha$ is because

$\alpha$ represents the area under the normal curve where the confidence level interval ( $1-\alpha$ ) did not cover which include both the left and right tail while

$\frac{\alpha }{2}$ is just the area of one tail which what we required to calculate the margin of error

Generally the margin of error is mathematically represented as

$MOE = Z_{\frac{\alpha }{2} } * \sqrt{ \frac{\r p(1- \r p )}{n} }$

substituting values

$0.04= 1.96* \sqrt{ \frac{0.48(1- 0.48 )}{n} }$

$0.02041 = \sqrt{ \frac{0.48(52 )}{n} }$

$0.02041 = \sqrt{ \frac{ 0.2496}{n} }$

$0.02041^2 = \frac{ 0.2496}{n}$

$0.0004166 = \frac{ 0.2496}{n}$

=> $n = 600$

5 0

3 years ago

If ANQZ - ACBK, find BK. *<br><br>O BK = 39<br>O BK = 16<br>O BK = 65<br>O BK = 27<br>

patriot [66]

9514 1404 393

Answer:

(c) BK = 65

Step-by-step explanation:

Corresponding sides are proportional in similar triangles, so ...

ZT/ZQ = KF/KB

27/(2x +7) = 45/(4x+1)

27(4x+1) = 45(2x +7) . . . cross-multiply

3(4x +1) = 5(2x +7) . . . . divide by 9

12x +3 = 10x +35 . . . . . eliminate parentheses

2x = 32 . . . . . . . . . . . . . subtract 10x+3

x = 16 . . . . . divide by 2

Then the length of BK is ...

BK = 4x+1 = 4·16 +1

BK = 65

5 0

2 years ago

Solve for a: a/2 - 2/3 = a + 1/5

ki77a [65]

The answer is 4 if I am correct

3 0

2 years ago

Read 2 more answers

$1,620 is shared between Samantha and Catherine. Catherine’s share is $60 more than Samantha's share

lyudmila [28]

1620-60=1560 to share between them (since Catherine has 60 more). 1560/2=$780

4 0

2 years ago

Box A contains 4 Blue counters and 3 white counters. Box B contains 5 white counters and 3 blue counters. Lauren takes a counter

Georgia [21]

Answer: 20/9

Step-by-step explanation:

4 0

3 years ago