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ser-zykov [4K]
3 years ago
9

25 over 2 in radical form

Mathematics
1 answer:
denis-greek [22]3 years ago
3 0
12.75 is what I got.
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Michelle read 72 pages in 3 hours. What was her unit rate of pages read per hour?
shutvik [7]

Answer:

24 pages per hour

Step-by-step explanation:

72 pages = 3 hours

To find the rate of pages per hour, divide both sides by 3.

72/3 = 24, 3/3=1

24 pages per 1 hour, 24:1

3 0
3 years ago
The area of a trapezoid is 216 in2 and it two bases are 14 and 22 inches long. Find the height of the trapezoid.
artcher [175]

Answer:

12 inches

Step-by-step explanation:

The formula for a trapezoid is

A = 1/2(a +b)h

The formula to find the height =

h = 2A/a + b

A= 216 in²

a =14 in

b = 22 in

Hence,

h = 2 × 216/14 + 22

h = 12 inches

The height of the trapezoid = 12 inches

6 0
3 years ago
A group of workers can plant 2/5 acres in days.3/4 What is the unit rate in acres per day?
steposvetlana [31]

Answer:

8/15

Step-by-step explanation:

3 0
3 years ago
A set of tires is designed to last 6 years, with a standard deviation of 2 years. What is the probability that a tire will last
evablogger [386]

Answer:

16%.

Step-by-step explanation:

We may assume that the times are normally distributed.

We first find the z-score which is the (value - mean) / standard deviation.

z-score =  (4 - 6)/2 = -1.

Looking up the value for -1 on a z-score normal distribution table we find that -1 gives us 0.1587  - that is 16%.

3 0
3 years ago
Read 2 more answers
A bag contains 8 red balls and 6 blue
Andreyy89

Answer:

The probability that all 3 balls are red is 18.65%, while the probability that all 3 balls are blue is 7.87%.

Step-by-step explanation:

Since a bag contains 8 red balls and 6 blue balls, and Radhika takes three balls at random from the bag, without replacement, to calculate the probability that the three balls are the same color, the following mathematical operations must be performed:

8 + 6 = 14

14 = 100

8 = X

8 x 100/14 = X

800/14 = X

57.14 = X

100 - 57.14 = 42.86

0.5714 ^ 3 = X

0.1865 = X

0.4286 ^ 3 = X

0.0787 = X

Therefore, the probability that all 3 balls are red is 18.65%, while the probability that all 3 balls are blue is 7.87%.

5 0
3 years ago
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