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3 years ago

What percent is represented by the shaded area? The tape diagram below represents 100%, percent.

Mathematics

1 answer:

Crazy boy [7]3 years ago

8 0

60% is shaded because each box equals 10% and since 6 of them are shaded 10%*6= 60%

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A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books. What is the probability

Gnesinka [82]

Answer:

Probability that one of them is mathematics and other two are either physics or history books = 0.51

Step-by-step explanation:

Given - A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

To find - What is the probability one of them is mathematics and other two are either physics or history books ?

Solution -

Given that,

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

So,

Total number of books = 3 + 3 + 1 = 7

The student has to select 3 books

So, Total number of ways = $^{7} C_{3}$ = 35

So,

Probability that one of them is mathematics and other two are either physics or history books is -

= $\frac{^{3} C_{1}. ^{4} C_{2} }{^{7} C_{3}}$

= $\frac{(3)(6)}{35}$

= $\frac{18}{35}$

= 0.51

⇒Probability that one of them is mathematics and other two are either physics or history books = 0.51

8 0

2 years ago

8 1/5- 4 3/5= ? answer this question plz. help me plz :c

mina [271]

Answer:

3 3/5

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Can someone help me plz

Aliun [14]

Answer:

The answer is 4.

Step-by-step explanation:

8/3 ÷ 2/3 = 8/3 x 3/2 = 4

7 0

3 years ago

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What is the first step in solving for the solution to this problem? <br><br> 2(m + 10) = 4(m -15)

harkovskaia [24]

Answer:

Multiplying the variables and numbers in the parentheses by the number next to them.

Step-by-step explanation:

6 0

3 years ago

At noon of a certain day, when 5 pens and 3 pencils were placed in a drawer, the ratio of the number of pens to the number of pe

Molodets [167]

The question is probably incomplete. What i am assuming is that the person might ask for the previous ratio or the total number of pens and pencil in the drawer.

So if it is the previous ratio it obviously would be 47 - 5 : 17 -3 so 42 : 14 and in case he or she is asking for the total number of pens and pencils in the drawer before so they were 42 + 14 hence 56.

4 0

3 years ago