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lesya [120]
3 years ago
9

Which set of side lengths form a right triangle?

Mathematics
1 answer:
RideAnS [48]3 years ago
3 0

B. 15m, 20m, 25m

use pythagorean theorem

a²+b²=c²

225+400=625

the square root of 625 is 25

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1. Rewrite the expression. Use an exponent, rather than repeated multiplication. (–4)(–4)
AlekseyPX
-4^2 is the same as -4*-4

-4*-4=16

-4^2= 16 

-4^2 is the exponent.

I hope this helps!
~kaikers
4 0
4 years ago
When the sample evidence is sufficient to justify rejecting the null hypothesis in a goodness-of-fit test, can you tell exactly
Svetllana [295]

No, we can only suppose that the observed distribution deviates from the expected distribution when we reject the null hypothesis.

<h3>What is a null hypothesis?</h3>

The null hypothesis exists as a specific mathematical theory that claims that there exists no statistical relationship and significance between two sets of observed data and estimated phenomena for each set of selected, single observable variables. The null hypothesis can be estimated to define whether or not there exists a relationship between two measured phenomena, which creates it useful. It can let the user comprehend if the outcomes exist as the product of random events or intentional manipulation of a phenomenon.

To learn more about the null hypothesis refer to:

brainly.com/question/13135308

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4 0
2 years ago
Read 2 more answers
Is the result statistically significant? Explain your answer.What does a mean difference of zero between the two groups indicate
valkas [14]

Answer:

Statistically significant means a result is unlikely due to chance. The p-value is the probability of obtaining the difference we saw from a sample (or a larger one) if there really isn't a difference for all users

8 0
3 years ago
Please answer asap will give brainiest
lubasha [3.4K]

Answer:

79% - almost 4 times out of 5.

The key to this is realizing that the number of games will not always be 5.

If A wins in a sweep - you have 2/3*(2/3)*2/3 percent chance of that happening - 8/27, or 29.63%

If A wins in 4, now we have 2/3*(2/3)*2/3*(1/3)*3 - the 1/3 is the chance that B wins a game. Note - there are only 3 ways B can win a game, not 4. B cannot win Game 4 because Game 4 would not be played in case of a sweep. That is why you cannot use a straight Pascal’s triangle to get your coefficients - the 1–4–6–4–1 is not possible if B cannot win Game 4. Anyway, the math is the same as the above, a 29.63% chance of A winning in 4.

For a 5 game set, A could lose 2 games in 6 possible ways (lose 1&2, 1&3, 1&4, 2&3, 2&4 or 3&4). Again, A cannot lose Game 5 - it would not be played once A wins 3 games. So the odds become 2/3*(2/3)*2/3*(1/3)*(1/3)*6, or 19.75%.

Add them up and you get 79.01%

Step-by-step explanation:

Hope it helps<3

6 0
3 years ago
Amy needs to mix 5 cups of baking soda with 6 cups of water to make a cleaning solution. How many cups of baking soda are needed
Sidana [21]

Answer:

5/6 cup

Step-by-step explanation:

6 cups of water: 5 cups of baking soda are needed.

divide by 6

1 cup of water: 5/6 cups of baking soda are needed.

7 0
4 years ago
Read 2 more answers
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