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stich3 [128]
3 years ago
12

which of the following is not a pythagoren tripple? A. 15, 46, 39 B. 24, 45, 51 C. 21, 72, 76 D. 18, 24, 30

Mathematics
2 answers:
balandron [24]3 years ago
7 0
The answer would be a
Ede4ka [16]3 years ago
3 0

Answer:

A

Step-by-step explanation:

15^2 = 225 (memorize everything to 20, thank me later)

39^2 = 1521 (just use a calculator for everything higher)

225 + 1521

1521 =?= 45^2

45^2 = 2025

1521 =/= 2025

Just to be sure, I'll do 15^2 + 45^2 (going to be too much)

225 + 2025 = 2250

2250 =/= 1521

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Can someone solve number 6, and show your work plz
Romashka [77]

Answer:

<em>3.9 kg</em>

Step-by-step explanation:

total mass = (number of nails) * (mass of one nail)

total mass = 750 * 5.2 * 10^(-3) kg

total mass = 750 * 5.2 * 10^(-3) kg

total mass = 750 * 0.0052 kg

total mass = 3.9 kg

6 0
3 years ago
1/3 of 90 = 2/3 of ?
rewona [7]
Answer=45
1/3 of 90= 30
5 0
3 years ago
Which of the following statements is not true? a) The standard deviation of the sampling distribution of sample mean = σ/√n b) T
I am Lyosha [343]

Answer:

e) The mean of the sampling distribution of sample mean is always the same as that of X, the distribution from which the sample is taken.

Step-by-step explanation:

The central limit theorem states that

"Given a population with a finite mean μ and a finite non-zero variance σ2, the sampling distribution of the mean approaches a normal distribution with a mean of μ and a variance of σ2/N as N, the sample size, increases."

This means that as the sample size increases, the sample mean of the sampling distribution of means approaches the population mean.  This does not state that the sample mean will always be the same as the population mean.

6 0
4 years ago
Suppose that 16 inches of wire cost 80 cents.
Karolina [17]

Answer:

11 inches

Step-by-step explanation:

you can cross multiply

inches cents

16 80

x 55

16×55 = 80x

80x= 880

x= 880/80

×= 11 inches

7 0
3 years ago
Read 2 more answers
The temperature dropped from 12° to 8° this was drop of how many degrees
lapo4ka [179]

Answer:

4°

Step-by-step explanation:

12-8=4

therefore the answer would be 4 degrees

6 0
4 years ago
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