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lbvjy [14]
4 years ago
13

To determine whether the pipe welds in a nuclear power plant meet specifications, a random sample of welds is selected, and test

s are conducted on each weld in the sample. Weld strength is measured as the force required to break the weld. Suppose the specifications state that mean strength of welds should exceed 100 lb/sq in; the inspection team decides to test \(H_{0}\) ; \(\mu=100 versus H_{a}\) ; \(\mu>100. \) Explain why it might be preferable to use this \(H_{a}\) rather than \(\mu < 100.\)
Mathematics
1 answer:
cluponka [151]4 years ago
6 0

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwjhzp_qu-LlAhVKhq0KHeMFC0kQjRx6BAgBEAQ&url=https%3A%2F%2Fwww.quora.com%2FHow-can-I-find-the-equation-of-a-straight-line-through-the-point-of-intersection-of-lines-2x-3y-5-0-and-3x-4y-7-0-which-is-perpendicular-to-the-line-5x-3y-2-0&psig=AOvVaw3tlliQ-3lYkkwnqEJXD3l1&ust=1573572313538611

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3 packs of soda cost $10 less than 5 packs of soda. Write and equation that models this, and solve.
zysi [14]
<span>Cost 1 pack = x
3x + 10 = 5x
2x = 10
x = 5
1 pack cost $5
Hope this helped</span>
8 0
3 years ago
Find the exact circumference of a circle with diameter equal to 8 ft
lina2011 [118]
The formula for circumference is C= 2(pi)(r)^2. Because diameter is double the radius, and the diameter is 8 ft, the radius is 4 ft. So, plug that into the equation, and you get: C=2(pi)(4)^2. The answer is 32 pi ft. If the question asks for the exact answer, keep the pi as it is, but if it says to round, multiply 32 by pi and round.
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3 years ago
Read 2 more answers
Help please asap!! will mark correct answer first brainliest! 25 POINTS.. FIRST SOLVE THE QUESTION WITH THE PICTURE THAN THE ONE
NemiM [27]

1. Eyeballing the data, the best fit will be pretty close to a line between the leftmost point and the rightmost point.

We estimate those points as (4,220) and (28,470)

The point point form for a line joining (a,b) and (c,d) is

(c-a)(y-b) = (d-b)(x-a)

(28 - 4)(y - 220) = (470 - 220)(x - 4)

24(y - 220) = 250(x-4)

24y - 5280 = 250x - 1000

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y = (250/24) x+ (4280/24)

Approximately that's,

y = 10.4 x + 178

Answer: 4th choice, 10.4x + 180

2. For 48 wheelbarrows,

y = 10.4(48)+180 = 679.2

Answer: 679.2 liters of sand

4 0
3 years ago
A brand of diet chips has 30% of the calories of the regular brand. If the diet brand has 90 calories, how many calories does th
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Vicki made a fruit tart and cut it into six equal pieces . vicki, silvia,and Elena each took 2 pieces of the tart home. vicki sa
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Yes, Vicki's statement is true. 
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