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3 years ago

Please answer, right answer = brainliest.

Mathematics

1 answer:

sweet [91]3 years ago

7 0

Answer:

Step-by-step explanation:

to find out whether a triangle is a right triangle we can use the pythagorean theorem

a²+b²=c²

a= one side of the triangle

b= one side of the triangle

c= the hypotenuse (or biggest side )

21^2+ 72^2= 76^2

441+ 5184= 5776

5625 = 5776 X

since the sums do not equal this means that it is not a right triangle.

i hope this helps!!

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Hi! im alex, just answer these easy questions and recive your points <3

Delvig [45]

Answer

106 sio so you multiply first

1+1+2+3+4+5+6×15

1+1+2+3+4+5+90

then you add all of them then it will be 106

8 0

3 years ago

HELP HELP HELP HELP GFG

liraira [26]

Answer:

y=mx + b

the slope is -3,2

y= -0.67x + 5

this is what. i got i could be wrong, sorry if i am

Step-by-step explanation:

8 0

2 years ago

What is the gcf of 27 and 72

Leya [2.2K]

Answer:

The GCF of 27 and 72 is 9

Step-by-step explanation:

prime factorization of 27 is 3*3*3

prime factorization of 72 is 2*2*2 by 3*3

3*3 is in both, and so we need to multiply that to get our GCF. 3*# is 9, so the GCF of 27 and 72 is 9

8 0

3 years ago

Read 2 more answers

Spencer sampled 50 students of a private school who were questioned about their scores in Mathematics. Spencer wants to test the

pickupchik [31]

Answer:

C) 3.03

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 50

The Mean of the population (μ) = 62

The standard deviation of the Population (σ) = 7

Mean of the sample(x⁻) = 65

Z-score

$Z= \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

Step(ii):-

$Z= \frac{65 -62}{\frac{7}{\sqrt{50} } }$

Z = 3.03

Final answer:-

The Z-score = 3.03

6 0

3 years ago

0.25 r – 0.125 + 0.5 r = 0.5 + r . Solve for r.

kotykmax [81]

0.25r - 0.125 + 0.5r = 0.5 + r

0.75r - 0.125 = 0.5 + r |add 0.125 to both sides

0.75r = 0.625 + r |subtract r from both sides

-0.25r = 0.625 |divide both sides by (-0.25)

r = - 2.5

6 0

3 years ago