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vova2212 [387]
2 years ago
9

Rewrite 10 7/8 as an improper fraction. I need help:)

Mathematics
1 answer:
scoundrel [369]2 years ago
6 0

Answer:87/8

Step-by-step explanation:cause i smart :D

<!>BRAINLIEST APPERICATED<!>

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How to solve -14x-11y=97 and -12y+11x=27 for x and y
jeka94
I do not know for sure but im almost 100% sure that the answer is y=97 and x=1.08 i hope that is correct and that it helps you out.
4 0
3 years ago
A survey in Men’s Health magazine reported that 39% of cardiologists said that they took vitamin E supplements. To see if this i
zzz [600]

Answer:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Step-by-step explanation:

Information given

n=100 represent the random sample taken

X=36 represent the number of people that take E supplement

\hat p=\frac{36}{100}=0.36 estimated proportion of people who take R supplement

p_o=0.39 is the value that we want to test

\alpha=0.05 represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true proportion is equatl to 0.39 or not, the system of hypothesis are.:  

Null hypothesis:p=0.39  

Alternative hypothesis:p \neq 0.39  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info we got:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

8 0
2 years ago
The Math Club bought 16 graphing calculators for $765. The TI-70 model costs $40 and
Afina-wow [57]

Answer:

They bought 5

Step-by-step explanation:

65x+40y=765

65(5)+40(11)=765

5 0
2 years ago
Let f(x)=1/x and g(x)=x^2-2. What is (fog)(-3)?
Elenna [48]

Answer:

Its value is 1/7.

I hope this will help you.

3 0
3 years ago
Is (4,2) a solution of the system y=x-2 and y=3x+4
babunello [35]

Answer:

False

Step-by-step explanation:

y=x-2  y=3x+4

Substitute the point into both equations and see if it is true

2=4-2

2=2  true

and

2=3*4+4

2 = 12+4

2 =16

False

It is not a solution

4 0
2 years ago
Read 2 more answers
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