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Ghella [55]
3 years ago
15

Which expression is equivalent to 7h^2-252k^2?

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

cccccccccccccccc

Step-by-step explanation:

gulaghasi [49]3 years ago
6 0

Answer:

c

Step-by-step explanation:

252 = 7 *36

36 = 6 *6 = 6²

a² -b²  = (a + b)(a - b)

7h² - 252k² =  7(h² - 36k²)

                   = 7(h² - [6k]² )

                  = 7(h  +6k)(h - 6k)

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25 ate only breakfast, 15 ate only lunch, 50 ate only dinner, 60 ate only lunch and breakfast, 225 ate only lunch and dinner, 50
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Answer:so u asking how much was ate total?

Step-by-step explanation:

6 0
3 years ago
10,14 and 18 can someone answer Pls pls
Sergeeva-Olga [200]
10. ? = 35

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4 0
3 years ago
A machine operation produces bearings whose diameters are normally distributed, with a mean of 0.497 inch and a standard deviati
eduard
Mean = 0.497 in, SD = 0.003 in
Required diameter ranges between 0.496 in and 0.504 in
Anything other diameter obtained is not acceptable.

That is;
P(x<0.496) and P(x>0.504) are not acceptable.

Now,
P(x<0.496) = P(Z< (0.496-0.497)/0.003)) = P(Z<-0.33)
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Similarly,
P(x>0.504) = P(Z> (0.504-0.497)/0.003)) = P(Z>2.33)
From Z tables, P(Z>2.33) = 1-0.9901 = 0.0099

Therefore, unacceptable proportion = P(x<0.496)+P(x>0.504) = 0.3707+0.0099 = 0.3806 or 38.06%
6 0
3 years ago
HELP I WILL MARK BRAINLIEST
Alborosie

Answer:

I think your right my dude

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
HURRY GETTING TIMED<br> Which expression is equivalent to 20 n=3<br> 20 n=3 + 20n=3
aksik [14]
Divide both sides of the equation by the same term.
solution n=3/20
3 0
3 years ago
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