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Law Incorporation [45]
3 years ago
6

A train moves at constant speed and travels 6 miles in 4 minutes. What is its speed in miles per minute?

Mathematics
1 answer:
ella [17]3 years ago
8 0

Answer:

1.5 miles per minute

Step-by-step explanation:

You might be interested in
Is the expression 3x + 2x - 4 ​ in simplest form? Explain.
viva [34]

Answer:

No

Step-by-step explanation:

you have to subtract 2x from 3x, so you have just x( you don't need the one in front of it)

So the answer would be ( x-4)

Hope that this helps you and have a great day :)

7 0
2 years ago
Read 2 more answers
A train travels at 100 miles per hour. Write an equation that compares the time (t) with the distance (d).
Marysya12 [62]

Answer: d = 100t

Hope this helps!

4 0
2 years ago
Read 2 more answers
g Suppose the population 10-year cumulative incidence of prostate cancer among 70-year old men is 0.06. Further, suppose 260 men
Rainbow [258]

Answer:

There is not enough statistical evidence to conclude that the cumulative incidence of prostrate cancer among 50-year old men differs from that of 70-year old men

Step-by-step explanation:

The population 10 year cumulative incidence of prostrate cancer among 70 year old men, p = 0.06

The number of 50 year old men in the sample, n = 260 men

The number of the sampled men that developed prostrate cancer = 13 men

The significance level, α = 0.05

Let the null hypothesis, H₀: \hat{p} = p

The alternative hypothesis, Hₐ: \hat{p} ≠ p

The standard score, z_{\alpha /2} = 1.96

The test statistic, 'z', is given as follows;

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p \cdot q}{n}}}

\hat{p} = 13/260 = 0.05

q = 1 - p = 1 - 0.06 = 0.94

Therefore,  \ z=\dfrac{0.05-0.06}{\sqrt{\dfrac{0.06 \times 0.94}{260}}} = \dfrac{\sqrt{9165} }{141} \approx -0.68

From the z-table, we find the p-value as follows;

P(z ≈ -0.68) = 0.24825

Therefore, given that the p-value, 0.24825 is larger than the significance level, α/2 = 0.025, we fail to reject the null hypothesis, and therefore, there is not enough statistical evidence to conclude that the cumulative incidence of prostrate cancer among 50-year old men differs from that of 70-year old men

5 0
2 years ago
1. Select all drawings in which a corresponding heighth for a given base bis correctly
Kobotan [32]
A,B,D,F
Reasoning, the height should be parallel to the base.
5 0
3 years ago
Solve the inequality r-(-5)>-2
Jet001 [13]

Answer:

r>-7

Step-by-step explanation:

Solving an inequality is similar to solving an equation. To solve for r, isolate it. Whatever you do to one side, do to the other. Remember that a negative and a negative equal a positive, thus one side of the inequality becomes r + 5. Then, subtract both sides by -5 to find the answer.

r-(-5) >-2\\r+5>-2\\r>-7

7 0
3 years ago
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