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Levart [38]
2 years ago
14

So it's got like money before and after and it has indepent and dependent variable ​

Mathematics
1 answer:
alex41 [277]2 years ago
7 0

Answer:

The dependent variable is the amount of money you earn because the amount of money you earn depends on how many chores you do.

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Solve the problem. A retired couple has $120,000 to invest to obtain annual income. They want some of it invested in safe Certif
Nataly [62]

ertificates 6.00% per annum ---x

AA bond 11.00% per annum ---y

x + 1 y= 160000 ------------------------1

6.00% x + 11.00% y= 15600

Multiply by 100

6 x + 11 y= 1560000.00 --------2

Multiply (1) by -6

we get

-6 x -6 y= -960000.00

4 0
3 years ago
I need help please. I don't get how to do systems of linear equations!!!!!!!
taurus [48]
The soluition set is (-3,5) and a normal ordered pair reads (x,y). So that means 5 = [_]x-10
-Add 10 to both sides
15 = [_]x
-And we know the value of x so lets sub that in.
15 = [_](-3)
-And now we divide by -3
-5 = [_]

Next we have 3x-[_]y=-19
-Lets start this buy substituting values of x and y into the equation again.
3(-3)-[_](5)=-19
-Simplify
-9 - [_](5) = -19
-Move the (-9) by adding 9 to both sides
-[_](5) = -10
-divide by 5 = -2
-(1)[_] = -2
[_] = 2
4 0
3 years ago
the summer camps had a field trip from the campus to fragrance hill. they traveled at an average speed of 65km/h in the first tw
sergejj [24]

Answer:

I took them a total of 5 hours

Step-by-step explanation:

First you multiply 65 by 2 because of the first two hours

Then you subtract 130 out of 364 to get 234, those were the first two hours

The next hours you simply divide 234/78, which is 3

3 + 2 = 5 hours

4 0
2 years ago
A researcher is 95% confident that the interval from 5.2 hours to 7.8 hours captures u = the true mean amount of time
igor_vitrenko [27]
<h3>Answer: Choice B</h3>

No, this is not a plausible value for the population mean, because 5 is not within the 95% confidence interval.

====================================================

Explanation:

The greek letter mu is the population mean. It has the symbol \mu which looks like the letter 'u' but with a tail at the front or left side.

The question is asking if mu = 5 is plausible if the researcher found the 95% confidence interval to be 5.2 < mu < 7.8

We see that 5 is <u>not</u> in that interval. It's a bit to the left of 5.2

Since mu = 5 is not in the interval, it's not a plausible value for the population mean.

Have we ruled it out with 100% confidence? No. Such a thing is not possible. There's always room for (slight) error. The researcher would need to do a census to be fully confident; however, such practices are very time consuming and expensive. This is the main reason why statistics is important to try to estimate the population with a sample.

8 0
2 years ago
Find the surface area of a cube with the following side length of 5<br><br> sa=
laiz [17]

Answer:

150 units^2

Step-by-step explanation:

A=6a2=6·52=150

5 0
3 years ago
Read 2 more answers
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