3 years ago

Need some help on this

Mathematics

1 answer:

Law Incorporation [45]3 years ago

4 0

9514 1404 393

Answer:

a. set 1: 29 minutes; set 2: 25 minutes

b. set 1 is more challenging than set 2

Step-by-step explanation:

a. The mean is found by adding the times and dividing by the number of times. For set 1, that is ...

(2×27 +2×28 +3×29 +2×30 +33)/10 = 290/10 = 29 . . . minutes

For set 2, that is ...

(4x24 +4×25 +2×27)/10 = 250/10 = 25 . . . minutes

b. The mean of set 1 is higher, and the spread is wider, suggesting more students have more trouble with the problems of set 1. That is, ...

set 1 is more challenging than set 2

You might be interested in

Find the length of x.

Ivahew [28]

You are post to find 110 minus the other number and you will get x

3 0

3 years ago

What precent is 30 is 24

GuDViN [60]

Answer:

80 percent

Step-by-step explanation:

5 0

3 years ago

Evalute the experssion -280+12x=

Alina [70]

The answer is 23 1/3. First, you need to add 280 to both sides of the equations in order cancel out 280 and get 12x by itself. But remember whatever you do to one side of an equation, you must to do the other. So now you have 12x=280. Now divide both sides of the equation by 12 in order to get x completely isolated. 280 divided by twelve is 23 1/3.