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aleksandrvk [35]
2 years ago
12

The maximum speed of China’s CRH380A train is 4.873 × 102

Mathematics
1 answer:
Brrunno [24]2 years ago
7 0

Answer:

The maglev train can reach a top speed of 431 km/h (268 mph).

Step-by-step explanation

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Please help!!!<br> i don’t understand this
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B. is your answer.

Step-by-step explanation:

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a 24 ft ladder is leaning against a 20 ft building, what is the distance between the bottom of the ladder and the base of the bu
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The distance at the base is 4 feet. Hope this helps.
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Can we all agree that math is hard??
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In the largest clinical trial ever​ conducted, 401,974 children were randomly assigned to two groups. The treatment group consis
BARSIC [14]

Answer:

The requirements for the hypothesis test does satisfied the method for testing the claim that from two population proportions the rate of polio is less for children given the salk vaccine.

Step-by-step explanation:

The percentage of children in the treatment group was:

(201229/401974)*100 = 49.9%

The percentage of children given placebo was:

(200745/401974)*100 = 50.1%

The percentage of children that developed polio in the treatment group:

(33/200745)*100 = 0.0164%

The percentage of children that developed polio in the placebo group:

(115/201229)*100 = 0.0571%

The percentage difference between the two group:

((0.0571-0.0164)/0.0571) = 61.62%

Therefore:

The amount of children used for each group was almost divided into half of the total amount of children. The test revealed although very small percentages of the both group developed polio, 68.62% more children given placebo than the children that was given the salk vaccine. Therefore, the study shows that the rate of polio is less for children given the salk vaccine and the the hypthesis test is satisfied.

6 0
2 years ago
Find the x- and y-intercept of the line. -7/5x -4y = 7 A. x -intercept is -7/4; y-intercept is 5 B. x -intercept is 5; y-interce
DochEvi [55]
Put y=0
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4 0
2 years ago
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