33 points!!!!

Mathematics

1 answer:

lakkis [162]3 years ago

4 0

I think it is 4 divided by 5 which equals 4/5 pieces of gum for everyone. (Hope I helped :D and hope I got it right ;D)

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A music buff wants to estimate the percentage of students at a midwestern university who believe that elvis is still alive. how

gulaghasi [49]

Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50

so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)

The margin of error for population proportion is calculated as:

$E=z* \sqrt{ \frac{p(1-p)}{n} } \\ \\ 
 \frac{E}{z} = \sqrt{ \frac{p(1-p)}{n} } \\ \\ 
( \frac{E}{z} )^{2}= \frac{p(1-p)}{n} \\ \\ 
n= p(1-p)* (\frac{z}{E})^{2} \\ \\ 
n=271$

This means 271 students should be included in the sample

5 0

3 years ago

What is the domain? What is the range?

almond37 [142]

Answer:

The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.

The range is the difference between the largest and smallest numbers. The mid range is the average of the largest and smallest number.

Hope this helps!

8 0

3 years ago

Please help with any of these, number 14, 16, 18 and 20 !!

kicyunya [14]

Answer:

14: B. 40 C. 40 D. 100

Step-by-step explanation:

a triangle is 180 degrees adding all the angles. The triangle on the top is just a mirror for the bottom and since B and C are the same that equals 80 and when you subtract 80 from 180 you get 100 so that makes D 100.

To double check just add 100+40+40=180

3 0

3 years ago

Find the value of each variable. Lines that appear tangent are tangent, and the dot is the center. (Answer in the form a=? b=? c

Anni [7]

Answer:

a = 60°/2 = 30°

b = 84/2 = 42°

c = (100+60)/2 = 80°

d = 360-100-60-84 = 116°

Answered by GAUTHMATH

3 0

3 years ago

Find the slope in the equation: y = 7x - 10 10 7x -10 7

iogann1982 [59]

Answer:

Step-by-step explanation:

Remember this equation: y=mx+b where m=slope and b=y-intercept.

Therefore, the slope in the equation is 7.

4 0

3 years ago

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