Which of the following is an example of a combination?
O A. Picking 3 books to take with you on vacation from a collection of
20 books
O B. Selecting a president, vice president, and treasurer
O C. The number of ways that 4 people can win 4 different prizes
O D. The number of ways that 7 books can be placed in a row on a
bookshelf

Answer:

5:1

Step-by-step explanation:

Divide by 40

Answer:

the answer is (x,y) = (6,6)

Step-by-step explanation:

1) first solve the equation for 2y

you should've gotten:

2y = -6 + 3x

5x - 2y = 18

2) substitute the value of 2y into the equation

5x - 2y = 18

so, 5x -(-6 + 3x) = 18

3) now solve 5x -(-6 + 3x) = 18

4) from that solving that equation, u should've gotten x = 6

5) now plug in 6 for x in the other equation, solve for y

( • stands for multiplication if u didn't know, we use this in higher levels of math so multiplication symbols and x variables aren't confused)

5 • 6 - 2y = 18

6) after solving for y in the previous equation, u should've gotten y = 6

7) now we know that x = 6 and y = 6, however it is always important to check if ur answer is correct by plugging in the x value y values u ended up with into the original system of equations.

checking ur work would look something like this:

2(6) = -6 + 3(6)

5(6) - 2(6) = 18

hope this helps <3

Answer:

1)-8×2/3

=-24×2/3

=-48/3

=-16

2)(-8)x(-2/3)

=-24×-2/3

=48/3

=16

3)-18/3

=-6

4)18/-3

=-6

5)-18/-3

=6

Answer:

C. x=42

Step-by-step explanation:

16 + 3x + y = 180

126 + 16 + y = 180

y = 38

16 + 3x + 38 = 180

54 + 3x = 180

3x = 126

x=42

Answer:

I think

Step-by-step explanation:

I think its 3 ^7 but i could be wronf

Answer:

x = 75

Step-by-step explanation:

X = 180 - 78 - 27 = 75

Answer:

The answer is 75

Step-by-step explanation:

I got this answer because i added 78 and 27 then i subtracted it from 180 because that was the interior angle of a triangle and i got 75.

Answer:

D. 10x-20

Step-by-step explanation:

The perimeter is just all four sides added together

(3x-2)+(3x-2)+(2x-8)+(2x-8)

add together like terms

3x+3x+2x+2x=10x

-2+-2+-8+-8=-20

write in order

10x-20

Answer:

19%

Step-by-step explanation:

If you mulityply by 1.19 you are giving a result of 119%, thus you either multiply by 1.19 or divide first by 100 and then multiply by 119.

Answer:

[tex]vol.\: of \: cone \\ = \frac{1}{2} \times \frac{22}{7} \times 4 \times 4 \times 8 \\ = \frac{11 \times 16 \times 8}{7} \\ = 1408 \\ = 201.14 \\ = 201.1[/tex]

Answer:

idontkn oww  atyou rsayin g

h

Step-by-step explanation:

Answer:

[tex]\frac{11}{12}[/tex]

Step-by-step explanation:

hope this helps sorry if incorrect have a good rest of your day

Answer:

22/24, but simplified is 11/12

Step-by-step explanation:

Answer:

21600 In.

Step-by-step explanation:

First, turn 15 feet into inches

15*12 is 180

then do 120*180 which equals 21600 In.

Answer:  The correct symbol is '<'.

Step-by-step explanation:

Given: In triangle GHJ

[tex]m\angle H=85^{\circ}[/tex] and [tex]m\angle G=60^{\circ}[/tex]

Here angle H is opposite to side JG and angle G is opposite to side HJ

We know that,

The side opposite to the greater angle of a triangle is greater.

Since [tex]m\angle H> m\angle G[/tex]

Then, JG > HJ

Hence, HJ     <       JG

Answer:

Last one

Step-by-step explanation:

You can simplify the first one or compare both of them if they have the same ratios! Hope this helps <3

Answer:

The last one

Step-by-step explanation:

Simplify and your answer is there! Like Magic! :P

Hope that helps!

Answer:

you cant

Step-by-step explanation:

its already simplified from the way its written

b(4a + 13c) is the simplified form of the expression 4ab + 13bc  

To simplify the expression 4ab + 13bc, we can factor out the common term "b" from both terms:

4ab + 13bc = b(4a + 13c)

By factoring out the common term "b", we obtain the simplified form b(4a + 13c).

This represents the original expression in a more concise and factored form.

Hence, the simplified form of the expression 4ab + 13bc  is  b(4a + 13c) by taking the common term b

To learn more on Expressions click:

https://brainly.com/question/14083225

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Answer:

0.904

Step-by-step explanation:

Using the binomial distribution, it is found that there is a 0.905 = 90.5% probability of getting at most 2 twos.

For each time the die is rolled, there are only two possible outcomes, either the result is a 2, or it is not. The result on a roll is independent of any other roll, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters are:

In this problem:

The probability is:

[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)[/tex]

Hence:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 0) = C_{7,0}.(0.1667)^{0}.(0.8333)^{7} = 0.279[/tex]

[tex]P(X = 1) = C_{7,1}.(0.1667)^{1}.(0.8333)^{6} = 0.391[/tex]

[tex]P(X = 2) = C_{7,2}.(0.1667)^{2}.(0.8333)^{5} = 0.235[/tex]

Then:

[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.279 + 0.391 + 0.235 = 0.905[/tex]

0.905 = 90.5% probability of getting at most 2 twos.

A similar problem is given at https://brainly.com/question/24863377

Answer:

The length of rectangle A is 12 in

36 / 3 = 12

Hope this helps.

Answer:

36 itdb36 i think ye sit is

Step-by-step explanation:

Answer:

We found the factors and prime factorization of 7 and 14. The biggest common factor number is the GCF number. So the greatest common factor 7 and 14 is 7.

Step-by-step explanation:

The value of the Expression 7+ 14  using the GCF is 21.

The largest factor that splits both numbers is said to be the greatest common factor. List the prime factors of each integer before calculating the greatest common factor. One 2 and one 3 are shared by those aged 18 and 24. The GCF of 18 and 24 is 2 * 3 = 6, which we multiply to obtain.

Given:

We have to add 7  + 14

Factorise the terms separately

7 = 7 x 1

14 = 7 x 2

So, the Greatest Common Factor is 7.

Thus, 7+ 14 = 7(1+ 2) = 7 x 3= 21

Learn more about Greatest Common Factor here:

https://brainly.com/question/11221202

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Answer: 2,304 square inches

Step-by-step explanation:

if there are 36 total tiles on the table, that means there are 6 on each side.

If each side meaures 8, then one side of the table is 48, and since the tikes are square, the other side of the table will be the same. 48 x 48=2,304

Answer:

Right

Step-by-step explanation:

There is a side that is 90 degress

Answer:

A

Step-by-step explanation:

V= BxHxL divided by 2

6x9x21= 1,134

divided by 2 equals 567yd

Answer:

A) 567 yd^3

Step-by-step explanation:

If you need help with formulas you could always look them up. Like triangular prism volume formula

Answer:

the first one

Step-by-step explanation:

have a great day

Answer:

C) B>A

Step-by-step explanation:

if it doesn't make sense think of it like the number in between A and B is .5. You can visibly see that A is less than or below .5 and B is above or greater than .5, so B is greater than A.