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Sliva [168]
2 years ago
15

State of each triangle is a right triangle

Mathematics
1 answer:
Marta_Voda [28]2 years ago
8 0
Number 7 is not a right triangle but Number 8 is
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A football coach gives half his players a protein bar to eat before each game; the other players do not receive the protein bar.
timofeeve [1]
To make the sure the results did not happen by chance, the coach can ensure that the protein bars are the only difference between the two groups. For example, he can make sure that both groups are drinking the same amounts of water and getting in the same amount of practice; that way, he will be able to determine that one group is performing better due to the protein bars only. Also, the coach can repeat this experiment multiple times to make sure that the results weren't a random, one-time thing. 
4 0
3 years ago
Factorise x^2+11x+18
Semenov [28]

Answer:

(x + 9)(x + 2 )

Step-by-step explanation:

Sum =11

Product = 18

Factors = 9 , 2

When you multiply (9*2 = 18) and when you add (9 +2 = 11).

x² + 11x + 18 = x² + 9x + 2x + (9*2)

                   =x(x + 9) + 2(x + 9)

                  = (x + 9)(x + 2 )

4 0
3 years ago
Read 2 more answers
18% of what number is 7.2?
RUDIKE [14]
18% of 40 is 7.2

Change the percentage (18%) into a decimal by dividing it over 100:

18/100 = 0.18

Divide 7.2 by the decimal (0.18):

7.2 / 0.18 = 40
5 0
3 years ago
Read 2 more answers
*Can someone please help me out with this one?*
Talja [164]
Either A - the value of r would increase or B- the value of r would not change.
5 0
3 years ago
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A sample of 38 students is chosen from a student body where 58% of all students own cell phones. If 24 of the students in this s
Dmitry [639]

Answer:

the sample proportion is higher

Step-by-step explanation:

What we must do is calculate the proportion of the population, we are left with the fact that out of 38 students 58% have cell phones, these are the proportion of the population, then they would be:

38 * 58% = 22.04 students

Now, the sample proportion is 24.

Therefore 22.04 < 24

Which means the sample proportion is higher

8 0
3 years ago
Read 2 more answers
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