All categories

3 years ago

the blue line and the yellow line trains just arrived at the station. When will they next arrive at the station at the same time

Mathematics

1 answer:

ivann1987 [24]3 years ago

5 0

Could you add some more details about the problem?

You might be interested in

Two fifths of the senior class earned a grade of B+ or higher on an advanced mathematics exam. If 42 seniors scored at least a B

g100num [7]

Answer:

Step-by-step explanation:

its is 105

5 0

3 years ago

Read 2 more answers

7 x 3/4

Mkey [24]

7 3/4

Step 1: Multiply 7 and 4.

7 x 4=28

Step 2:Add 3 to their product.

28+3=31

Step 3:The number so obtained is the numerator and the denominator remains the same.

Answer: 31/4

I think that is what you are looking for!

Hope that helps!!!

7 0

3 years ago

I need help with these math problem ASASP! Please! The first question....

Mkey [24]

From x equals five to nine, the y value changes as follows
+10,+2,+1,+3
Assuming that "average" implies the mean, the sum of all four values is 15. Then divide 15 by the four values added = 15/4 = 3 3/4 or 3.75

4 0

2 years ago

What is 2.25 as a fraction

Otrada [13]

9/4
Found the answer on google and plus my teacher considered it right

7 0

2 years ago

Suppose that we were going to conduct a study to determine if there is an increased risk of getting lung cancer based on whether

oee [108]

Answer:

Sample relative risk is 4.

Step-by-step explanation:

We are given the following in the question:

Group 1 of smokers: 10 out of 100 get lung cancer.

$\text{P(Lung cancer for smoker)} = \dfrac{10}{100} = \dfrac{1}{10}$

Group 2 of non-smokers: 5 out of 200 get lung cancer

$\text{P(Lung cancer for non-smoker)} = \dfrac{5}{200} = \dfrac{1}{40}$

Sample relative risk:

It is the ratio of probability of an outcome in an exposed group to the probability of an outcome in an unexposed group.

Sample relative risk =

$\dfrac{\text{P(lung cancer for smokers)}}{\text{P(lung cancer for non smokers)}}\\\\=\dfrac{\frac{1}{10}}{\frac{1}{40}} = \dfrac{40}{10} = 4$

Thus, sample relative risk is 4.

4 0

2 years ago