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vagabundo [1.1K]
3 years ago
15

Sarahs investment in stock grew 16% to $522.How much did she invest.

Mathematics
1 answer:
vredina [299]3 years ago
7 0
She invested $83.52 to be exact
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Work out the equation of the line which passes through the point (1,-2)and is parallel to the point y=x+4
dimaraw [331]

Answer:

y = x - 3

Step-by-step explanation:

Basically, if the lines are parallel, they have the same slope, right? So that part is already complete

And to get the rest of the equation, plug in the points -2 and 1 into the equation for the x values. Then set the equation to solve for b

After you do that you should get b = -3

The slope is 1 and the y-int is -3

Thank me later ;)

4 0
3 years ago
After working for 6 hours, Kevin earned $51.00. What is Kevin's unit rate.
nalin [4]
He gets 8 dollars every hour. :)
8 0
3 years ago
Read 2 more answers
A recent national survey found that high school students watched an average (mean) of 7.8 movies per month with a population sta
notka56 [123]

Answer:

Step-by-step explanation:

Given that :

Mean = 7.8

Standard deviation = 0.5

sample size = 30

Sample mean = 7.3 5.4772

The null and the alternative hypothesis is as follows;

\mathbf{ H_o: \mu  \geq  7.8}

\mathbf{ H_1: \mu  <  7.8}

The test statistics can be computed as :

z = \dfrac{X- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{7.3- 7.8}{\dfrac{0.5}{\sqrt{30}}}

z = \dfrac{-0.5}{\dfrac{0.5}{5.4772}}

z = - 5.4772

The p-value at  0.05 significance level is:

p-value = 1- P( Z < -5.4772)

p value = 0.00001

Decision Rule:

The decision rule is to reject the null hypothesis if  p value is less than 0.05

Conclusion:

At  the 0.05 significance level,  there is sufficient information to reject the null hypothesis. Therefore ,we  conclude that college students watch fewer movies a month than high school students.

8 0
3 years ago
Omar is collecting toy cars. He starts his collection with 2 toy cars that his grandmother gave him. He plans to buy cars each w
d1i1m1o1n [39]

Can you please add the table so i can answer it

4 0
3 years ago
-m + 10 = -8 – 6m + 3m
Crank
M = -9 ; solve for m by simplifying both sides of the equation, then isolating the varible 
3 0
3 years ago
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