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sergejj [24]
3 years ago
7

The absolute value of 4+7i is equal to the square root of?

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
6 0
Of 3.............................................

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15 yards to 18 yards
jeyben [28]
The answer is 270 , I multiplied 15 by 18 and got 270
8 0
3 years ago
Is -4 greater than -1/4
Valentin [98]

Answer:

No

Step-by-step explanation:

You would think -4 is, but because they are both negative, -1/4 is closer to zero

8 0
3 years ago
Read 2 more answers
What is the solution to the following equation?
cupoosta [38]

The answer is 8. you are basically adding 13 to -5. so it would be 13-5=8.

3 0
3 years ago
Which of the following is a reasonable estimated answer to the following problem?
bulgar [2K]
989,867 \approx 1,000,000
999 \approx 1000

\implies  \frac{989,867}{999} \approx  \frac{1,000,000}{1000}
\frac{1,000,000}{1000} = 1000

So the answer is approximately 1000.
4 0
3 years ago
Read 2 more answers
The article "Influence of Penetration Rate on Penetrometer Resistance" (see textbook for reference) presents measures of penetra
snow_tiger [21]

Answer:

The 95% of confidence interval for the mean penetration resistance for this soil is (2.0823, 3.1977).

Step-by-step explanation:

The sample size is 15.

The first step to solve this problem is finding how many degrees of freedom there are, that is, the sample size subtracted by 1. So

df = 15-1 = 14

Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 14 and 0.025 in the t-distribution table, we have T = 2.145.

Now, we need to find the standard deviation of the sample. That is:

s = \frac{1.02}{\sqrt{15}} = 0.26

Now, we multiply T and s

M = T*s = 2.145*0.26 = 0.5577

For the lower end of the interval, we subtract the mean by M. So 2.64 - 0.5577 = 2.0823

For the upper end of the interval, we add the mean to M. So 2.64 + 0.5577 = 3.1977

The 95% of confidence interval for the mean penetration resistance for this soil is (2.0823, 3.1977).

7 0
2 years ago
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