Answer: 31.42 m
Step-by-step explanation:
![A=2\pi rh+2\pi r^2](https://tex.z-dn.net/?f=A%3D2%5Cpi%20rh%2B2%5Cpi%20r%5E2)
![A=2\pi (1)(4)+2\pi (1)^2](https://tex.z-dn.net/?f=A%3D2%5Cpi%20%281%29%284%29%2B2%5Cpi%20%281%29%5E2)
![A=31.42](https://tex.z-dn.net/?f=A%3D31.42)
Hope this helped! ;)
3:7
3x + 7x = 90
10x = 90
x = 9
Answer is 7 ×9 and 3 ×9
63 and 27
You're given one leg<span>. Because you know both legs are equal, you know the length of both the legs. You can find the </span>hypotenuse<span> by multiplying this length by the square root of 2. Divide the </span>hypotenuse<span> by the square root of 2 to find the legs (which are equal).</span>
It's 1000 charges and not 1.000 charges
Answer:
A)Null Hypothesis;H0: μ = 1000
Alternative Hypothesis;Ha: μ ≠ 1000
B) t-statistic = 1.4286
C) p-value = 0.15628
D) We conclude that we will fail to reject the manufacturers claim that its rechargeable batteries are good for an average of more than 1000 charges
Step-by-step explanation:
We are given;
x = 1002 charges
s = 14
μ = 1000 charges
n = 100
degree of freedom = n - 1 = 100 - 1 = 99
A) The hypotheses are;
Null Hypothesis;H0: μ = 1000
Alternative Hypothesis;Ha: μ ≠ 1000
B) t-statistic = (x - μ)/(s/√n)
(1002 - 1000)/(14/√100) = 1.4286
C) From the t-score calculator results attached, the p-value is approximately 0.15628
D) The P-value of 0.15628 is is greater than the significance level of 0.01, thus we fail to reject the null hypothesis, and we conclude that the result is statistically nonsignificant.
All you have to do is subtract -12.6 C from 7.5 C which equals -20.1
-12.6 - 7.5 = -20.1