Solve each system by substitution. 1. x = y + 2 2y + x = 17

The measure of each interior angle of a regular polygon is 157.5 ∘ . How many sides does the polygon have?

uranmaximum [27]

180(n-2)=157.5n

180N-360=157.5n

180N-157.5n=360

22.5N=360

N=360/22.5

N=16

4 0

3 years ago

Which expression has a positive value? O (-5)(-9) O 2-4 O 12+(-4) O-3+(-7)

PolarNik [594]

(-5)(-9) because a negative times a negative equals a positive.

3 0

3 years ago

Read 2 more answers

Pairs of P-values and significance levels, α, are given. For each pair, state whether the observed P-value would lead to rejecti

lubasha [3.4K]

Answer:

(a) P-value = 0.074, α = 0.05 do not reject H0

(b) P-value = 0.006, α = 0.001 do not reject H0

(c) P-value = 0.494, α = 0.05 do not reject H0

(d) P-value = 0.074, α = 0.10 reject H0

(e) P-value = 0.028, α = 0.01 do not reject H0

(f) P-value = 0.296, α = 0.10 do not reject H0

Step-by-step explanation:

The p-value is used to determine the statistical significance of the results of a statistical test. The p-value is the probability that the null hypothesis is correct. Smaller the p-value, higher is the probability that the alternate hypothesis is correct. On the other hand, the significance level (α) is the probability of rejecting the null hypothesis when it is true. It is the risk that you are willing to take in saying that there are differences between groups when there are not.

In order to reject the null hypothesis, the p-value should be lower than the significance level (α).

7 0

3 years ago

Ecosia is one solution to climate change. Why?

balu736 [363]

Answer:

Step-by-step explanation:

NATURAL DISASTERS ARE UP… dramatically

CO2 concentrations in our atmosphere are up … dramatically

TEMPERATURES are up … dramatically

"There is no need to add additional taxes to combat climate change. The best bet is simply QUIT SUBSIDIZING those human activities which causing AGW.

World-wide, Fossil Fuels & industries suck up subsidy Dollars. SUCK UP roughly 6.5% of GDP ... TRILLIONS of DOLLARS in subsidies / supports (non taxable supports & subsidies!) ... In most cases the newer more modern energy and agricultural systems are more profitable and less damaging to the environment already.

So there is no need to tax people to subsidize those things harming the environment, then taxing us again to penalize those same ones we just subsidized!

A house divided against itself cannot stand. -Lincoln (paraphrasing the Bible)

It is time for a strong political leader to take charge and end this deadlock. ... We could either reduce taxes and let the new technologies out compete the obsolete systems we depend on now, or we could keep taxes the same and simply redirect the subsidies we use for fossil fuels and destructive industrialized agriculture towards modern sustainable systems instead. The one thing that won’t work is keep the tax and spend schemes the Neo-Luddites have made for themselves now, and also add even more tax and spend schemes for their competing new technologies too!

Yes that’s right, the top two causes for global warming are heavily subsidized.[1][2][3][4] It is literally insanity. ...

hope this helps have a great morning❤️

5 0

3 years ago

Two jet airliners leave the same airport at the same time, flying in the same directions. One is flying at 360 miles per hour, a

soldier1979 [14.2K]

It will take 3 hours for them to be 270 miles apart. Right?

6 0

4 years ago