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Airida [17]
3 years ago
13

Math please help ( ASAP vv easy )

Mathematics
2 answers:
maks197457 [2]3 years ago
8 0
A. the answer is the first one
r-ruslan [8.4K]3 years ago
7 0

a. the answer is the first one

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Y&lt; 3x + 6<br> Determine if (2,4) is a solution
kap26 [50]

Answer:

Yes

Step-by-step explanation:

4 < 3(2) + 6

4< 6+6

4 < 12

3 0
2 years ago
Read 2 more answers
12. If a manufacturer conducted a survey among randomly selected target market households and wanted to be 95% confident that th
atroni [7]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

Step-by-step explanation:

We have the following info given:

Confidence= 0.95 the confidence level desired

ME =0.03 represent the margin of error desired

The margin of error for the proportion interval is given by this formula:  

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

The confidence level is 95% or 0.95, the significance is \alpha=0.05 and the critical value for this case using the normal standard distribution would be z_{\alpha/2}=1.96

Since we don't have prior information we can use \hat p= 0.5 as an unbiased estimator

Also we know that ME =\pm 0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

6 0
3 years ago
If you understand, please put the answer!
il63 [147K]

Step-by-step explanation:

3-8 is diagnal 7-2 is also 7-2 is the answer

8 0
3 years ago
Use the formula v=u+at <br>calculate v when:<br>u=10, a=3, t=2.5​
Ksenya-84 [330]

Answer:

<h2>17.5</h2>

Step-by-step explanation:

v = 10 + 3 \times 2.5 \\ v = 10 + 7.5 \\ v = 17.5

This is your answer :))

7 0
3 years ago
Read 2 more answers
5. Write an expression equivalent to x - 3y + 4.​
Pepsi [2]

Answer:

2x - 6y + 8

Step-by-step explanation:

7 0
2 years ago
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