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3 years ago

HELP ME PLEASE #'s 7,8,9

Mathematics

1 answer:

devlian [24]3 years ago

8 0

You didn't show the examples so I can't really say anything

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If measure of angle ABE equals 52, twhat is measure of angle D

zhuklara [117]

Answer:

Step-by-step explanation: B26

4 0

3 years ago

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Naddika [18.5K]

Answer:

The sample size is $n = 68$

Step-by-step explanation:

From the question we are told that

The margin of error is $E = 5 \ years$

The standard deviation is $\sigma = 22$

From the question we are told the confidence level is 94% , hence the level of significance is

$\alpha = (100 - 94 ) \%$

=> $\alpha = 0.06$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.881$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2$

=> $n = [\frac{1.881 } * 22 }{5} ] ^2$

=> $n = 68$

8 0

3 years ago

Which formula can be used to describe the sequence?<br> *<br> *)=<br> )<br> -*

Flura [38]

Answer:

depends the sequence is an irrational

Step-by-step explanation:

4 0

3 years ago

A circle has center

Fed [463]

Note that the equation of the circle is

(x-h)² +(y-k)² =r²

where centre is (h,k)

the equation of the circle based on the information given

(x-3)² +(y-4)² =r²
and the point on the circle (3,-2)

substitute into the equation

(3-3)² +(-2-4)² =r²

r=6 or r=-6

since r is radius, we reject r=-6 since radius must be nonnegative.

the radius is 6

5 0

1 year ago

A taxi charges a fee, plus $1.80 per mile. how far can you go for $12?

EleoNora [17]

12: 1.8= 20/3. => the answer is 20/3 miles

7 0

3 years ago