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3 years ago

I haven’t done this since 7th grade sorry I just don’t remember

Mathematics

2 answers:

Softa [21]3 years ago

5 0

Elimination is x=3 since you can cancel our out the 3y just add the 8 and 2 which is 10 and 18 and 12 which is 30, devide and there ya go

Digiron [165]3 years ago

3 0

The answer is x=3. You just eliminate

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What do you know to be true about the values of p and q?

pochemuha

Answer:

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Step-by-step explanation:

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3 years ago

Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value u

Mashutka [201]

Answer:

The critical z value used to test a null hypothesis is ±1.75.

Step-by-step explanation:

We are given that the data has a normal distribution and the number of observations is greater than fifty.

Also, the hypothesis given to us is;

<u>Null Hypothesis</u>, $H_0$ : $\mu$ = 3.24

<u>Alternate Hypothesis</u>, $H_1$ : $\mu\neq$ 3.24

This means that our test is two-tailed because in the alternate hypothesis we are concerned with mean value is less than or greater than 3.24.

Also, level of significance (α) = 0.08

Now, for two-tailed test level of significance becomes = $\frac{\alpha}{2} =\frac{0.08}{2}$ = 0.04

So, in the z-table the critical value of x at 4% significance level is given as 1.75.

Since, this is two-tailed test so the critical z value used to test a null hypothesis would be ±1.75.

7 0

3 years ago

Inverse of m(x)=2x^2-6

romanna [79]

$m(x)=2x^2-6\to y=2x^2-6\ \ \ \ |add\ 6\ to\ both\ sides\\\\2x^2=y+6\ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\x^2=\dfrac{y+6}{2}\ \ \ \ |sqare\ root\ both\ sides\\\\x=\sqrt{\dfrac{y+6}{2}}\\\\Answer:\boxed{m^{-1}(x)=\sqrt{\frac{x+6}{2}}\ for\ x\geq-6}$

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3 years ago

Please help what’s the answer

max2010maxim [7]

Answer:

Step-by-step explanation:

When you provide heat (thermal energy) to the gas molecules, their root mean square velocity (kinetic energy) increases, as a result they the gas exerts a higher pressure on the walls of the balloon and the balloon expands.

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3 years ago

Read 2 more answers

Find the equation of the line that has the same slope as y = 2x – 3 and goes through the point (–1, 3).

tankabanditka [31]

Answer:

y=2x+5

Step-by-step explanation:

y=2x+b

3=2(-1)+b

3=-2+b

+2 +2

b=5

y=2x+5

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3 years ago