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Tanya [424]
2 years ago
7

Solve the system of equations:

Mathematics
2 answers:
yanalaym [24]2 years ago
5 0

Answer:

x + y = 9 \\ x + 2x = 9 \\ 3x = 9 \\ x =  \frac{9}{3}  \\ x = 3

pav-90 [236]2 years ago
3 0
The answer is y= 3 (:
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What is volume, and how is it measured?
Lelu [443]

Answer:

Volume is the amount of space taken up by an object, while capacity is the measure of an object's ability to hold a substance, like a solid, a liquid or a gas.

Step-by-step explanation:

Volume is measured in cubic units, while capacity can be measured in almost every other unit, including liters, gallons, pounds, etc.

- - - - - -

If this helps please mark brainliest <3

5 0
2 years ago
Assume that the amount of beverage in a randomly selected 16-ounce beverage can has a normal distribution. Compute a 99% confide
ioda

Answer:

The question is incomplete, but the step-by-step procedures are given to solve the question.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.005 = 0.995, so Z = 2.575.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 2.575\frac{\sigma}{\sqrt{n}}

The lower end of the interval is the sample mean subtracted by M.

The upper end of the interval is the sample mean added to M.

The 99% confidence interval for the population mean amount of beverage in 16-ounce beverage cans is (lower end, upper end).

7 0
3 years ago
I am confused on how to do this? please help!
IceJOKER [234]
You would take random numbers preferable smaller ones such as -1,0,1,2
You would put those in the place of x
Then you would square the value of x. After that you subtract 4. Whatever you come out with is your y value. Then you put the x value on the x axis and from that point count up or down to the number you need on the y axis. Together that would be your point
6 0
2 years ago
Anyone, please help me!!!​
lianna [129]

Answer:

Step-by-step explanation:

Hint:  1- 2sin²x = Cos 2x

LHS = 1 - 2Sin² (π/4 - Ф/2)

        =  Cos 2 *(π/4 - Ф/2)

        = Cos 2*π/4 - 2*Ф/2

         = Cos π/2 - Ф

         = Sin Ф =  RHS

7 0
3 years ago
Read 2 more answers
A bag contains 1 gold marbles, 6 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one
pentagon [3]

Answer:

the expected value is -$1

7 0
2 years ago
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