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qwelly [4]
3 years ago
13

from a set of seven math books, nine science books, and five literature books, in how many ways can a student select two from ea

ch set?
Mathematics
1 answer:
Over [174]3 years ago
6 0
There are 7 math books, 9 science books and 5 literature books. Student has to select 2 books from each set.

This is a combination problem.

Number of ways to select 2 math books from 7 books = 7C2 = 21
Number of ways to select 2 science books from 9 books = 9C2 = 36
Number of ways to select 2 literature books from 5 books = 5C2 = 10

Total number of ways to select 2 books from each set = 21 x 36 x 10 = 7560 ways.

So there are 7560 ways to select 2 books from each set of seven math books, nine science books, and five literature books
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Negative 5X +3 equals 18
andrey2020 [161]
-5x +3 =18
Subtract 3 from each side
-5x= 15
Divide by -5 
x= -3 
6 0
3 years ago
Simplify (-4b^3) (2b^5)
Agata [3.3K]
Hello! Sorry that it’s taken so long for someone to get to you but hopefully I am able to help!

Without the boring words and searching for the answer I’ll just give it to you

Answer: (-4b^3)(2b^5)

Please mark me brainliest !
4 0
3 years ago
This is very confusing to me, if anyone can help me I will most definitely give them the brainiest.
Marrrta [24]

Answer: figure 1 and 4

Step-by-step explanation: just multiple width times length and see if they give the same answer.

hoped this helped.

7 0
3 years ago
A triangular prism has a base of 9 and height of 7. The length of each side of the triangular prism is 9 and the width of the en
Sergio [31]

Answer:

Therefore,

The surface area is

\textrm{Total Surface Area of Prism}=252\ units^{2}

Step-by-step explanation:

Shape is triangular prism,

Base = b = 9

Height = h = 7

The length of each side of the triangular prism ,

s₁ = s₂ = s₃ = 9

Width of the entire prism

Width = W = 7

To Find:

The surface area = ?

Solution:

Total Surface Area of Prism is given by,

\textrm{Total Surface Area of Prism}=bh + (s_{1}+s_{2}+s_{3})W

Where,

b = Base

h = Height

s₁ , s₂ , and s₃ = length of each side of the triangular prism

W = width of the prism

Substituting the values we get

\textrm{Total Surface Area of Prism}=9\times 7 + (9 + 9 + 9)\times 7=252\ units^{2}

Therefore,

The surface area is

\textrm{Total Surface Area of Prism}=252\ units^{2}

7 0
3 years ago
Decide whether the following situation is looking for the percent, the part, or the whole:The 14 compact cars sold by a dealer o
borishaifa [10]

Answer:

  whole

Step-by-step explanation:

No question is posed.

If we assume we're interested in the number of cars sold on Monday, we have ...

  part = percent × whole

  14 = 56% × whole

It would seem that we're looking for the whole.

__

14/.56 = 25 cars were sold on Monday.

6 0
3 years ago
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