There are n nonfiction books and 12 fiction books on a bookshelf. If one of these books is selected at
random, what is the probability of selecting a nonfiction book, in terms of n?
A
n
12
B
n
n +12
С
12
n
D
12
n+12

Answer:

oh boi its for me? yay

Step-by-step explanation:

Answer:

for Question 1 the answer will be 450 cuz 900/2 is 450!

for the next one it would be -9 cuz -27/3 is -9!

hopefully this helped!

NVM I DID IT WRONG

Answer:

1. 30

2. 9

3. 0.5

Answer:

The correct option is;

D. When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent

Step-by-step explanation:

In the proof to show that the sum of the angles in a triangle = 180°, we have;

For a triangle located between two parallel lines, such that the base of the triangle coincides with one of the parallel lines, we have;

The angle formed by one of the base angles and the adjacent side of the extension = 180° by the sum of angles on a straight line

From the attached diagram of a triangle between two parallel lines, we have;

∠e + ∠b = 180° by the sum of angles on a straight line postulate

∠e = ∠a + ∠d by alternate interior angles postulate

∠c = ∠d by alternate interior angles postulate

∴ ∠e = ∠a + ∠c by substitution property

∴ ∠e + ∠b = ∠a + ∠c + ∠b  = 180° by substitution property

Therefore, the sum of the interior angles of a triangle, ∠a + ∠c + ∠b  = 180°.

Answer:

x ≤ 75

Step-by-step explanation:

The computation of the inequality function is as follows:

Let us assume the remaining time left for other drills be x

Given that the team spends 20 minutes for running laps

And minimum of 15 minutes for discussing plays

Also practicing for last one hour and 45 minutes

Now as we know that

1 hour = 60 minutes

So total minutes would be

= 60 + 45

= 105 minutes

Total minutes spend by the team is

= 20 + 15

= 35 minutes

So now the remaining time left is

x ≤ 105 - 35

x ≤ 75

Answer:

Assume flour = x and sugar = y

8x = 4y

2x = y. Main equation

So when y is 12.

2x= 12

X = 6

Thank you and please rate me as brainliest as it will help me to level up

Answer:

z = the fraction 1 divided by 14. Or 1 over 14.

Answer:

z=5

Step-by-step explanation:

Answer:

126 miles

Step-by-step explanation:

28.95*4=115.8

150-115.8=34.2

34.2/0.27=126

Answer:

This is an example of the product of powers property tells us that when you multiply powers with the same base you just have to add the exponents.

Step-by-step explanation:

Answer:

t=0.19

Step-by-step explanation:

Velocity is distance per tine

V=s/t

32=5.5/t

t= 0.72

To know How long will it take for the ball to descend to an outfielder's glove 6 feet off the ground?

V=s/t

32=6/t

t=0.19

Step-by-step explanation:

100 / 2 (1500/5 (6 + (21 + 7 - 24)))

= 100 / 2 (1500/5 (6 + (28 - 24)))

= 100 / 2 (1500/5 (6 + (4)))

= 100 / 2 (1500/5 (10))

= 100 / 2 (300 (10))

= 100 / 2 (3000)

= 50 (3000)

= 150000

Rule: BODMAS (Brackets first so if there's bracket in bracket solve the bracket in the brackets first)

if left + - x /, solve x and / first from left to right then when there's + - left solve everything from left to right

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Answer:

Hi... Your answer is... A=1

Answer:

x column- 1.25, 7.5, 45.

y column- 5, 30, 180.

Step-by-step explanation:

Okay, to start off, we need to find how 1.25 got to 5. If we divide it, we get 4. So we go to 7.5 and multiply it by 4, since that seems to be the relationship between x and y. 7.5x4=30, which is an answer. So the second spot in the y column is where 30 goes. Now we figure out the relationship between the two numbers in the x column so we can figure out the missing one. When you divide 7.5 by 1.25, you get 6. So, if 1.25x6 makes the next number in the x column, 7.5x6 should make the missing number. 7.5x6 is 45, so the missing number in the x column is 45. Now we go back and multiply 45 by 4, which gets us 180.

Answer:

D.

Step-by-step explanation:

Expressing something by a unit rate means to express a value per single item. Hence, only D fits (per package, meaning per 1 package.)

Hope this helped!

Answer:

D

Step-by-step explanation:

per package, meaning per 1 package.

Answer:

GIF can support small animations

Answer:

F

Step-by-step explanation:

The slopes of H and J are 2/3 so those cannot be the correct answer.  F will pass through the point (3,2).  Hope this helps!

Answer:

23.9

Step-by-step explanation:

it just is so right

Answer:

x=2

Step-by-step explanation:

2-6x=-10

-2     -2

____________-

-6x=-12

÷-6    ÷-6

______________

x=2

Hope this helps :D

Step-by-step explanation:

-4x=-10

divide both sides by -4

therefore the answer is 2.5

Answer:

24:6

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

Answer:

Slope = - 6/5

Step-by-step explanation:

Step 1:

y = mx + b        Slope Intercept Form

Step 2:

m = Slope

Step 3:

y = - 6/5x - 5          Equation

Answer:

Slope = - 6/5

Hope This Helps :)

Answer:

m=-6/5; the slope is -6/5

Step-by-step explanation:

Here is an easy way to define slope:

y=mx+b

m is slope and b is the y-intercept

Remember, you just have to find what is multiplied by x in a slope-intercept equation, and that is the slope.

Answer:

[tex]n=3.875[/tex]

Step-by-step explanation:

First, we can expand the brackets:

[tex]-(5n-9)+3n=-2(5n-20)[/tex] (given)

[tex]-5n+9+3n=-10n+40[/tex]

[tex]-2n+9=-10n+40[/tex] (combine like-terms)

[tex]8n=31[/tex]

[tex]n=3.875[/tex]

Hope this helps :)

Answer:

answer and explanation in the pics above

hope it helps

Answer:

4 1/2

Step-by-step explanation:

Answer:

Convert 1 1/2 into a regular fraction

Because the following quantity, 1 1/2 is a  mixed fraction

1 1/2 = 3/2

According to the question

The recipe for one bath call for 3/2 cups of flour

1 batch needs 3/2 cups of flour

Multiply 3 to both of the sides

3x1 batch needs 3 times 3/2 cups of flour

3 batch would need 4 1/2

B is your answer

Answer:

33.75 miles in 45 minutes,

45 miles in an hour

Step-by-step explanation:

45 minutes: 2 1/3= 7/3 ---> 7/3*3=7,

                    1 3/4= 7/4 ---> 7/4*3=5.25

car travels 5.25 miles for every 7 minutes,

45/7*5.25= 33.75 miles

1 hour (60 minutes):

using that the car travels 5.25 miles for every 7 minutes,

60/7*5.25= 45 miles

Hope that makes sense!

Answer.

594 7/25 converted into decimal is 594.28, 89 37/100 converts to 89.37. Add 594.28 and 89.37 together and we get out final answer of 683.65. Convert that back into fraction form and we get (683 13/20)

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

If,n-8=2

Then,

n=2+8

n=10

Answer:

-30

Step-by-step explanation:

let Sarah's number be X

x-15=15x

15x*-5=105

-75x=105

-x=105-75

X=-30

I think

hope it's helpful!

Answer:

15

Step-by-step explanation:

Answer:

96-81=15 lol

hope this helps

Step-by-step explanation:

Answer:

8, 3, -2, -7

Step-by-step explanation:

To solve you have to multiply -5 by whatever number is in the x column of the table then add 3. For example, -5*0 = 0, then 0+3 = 3 and that's your answer(s).

Answer:  In order from top to bottom:

9

3

-2

-7

Step-by-step explanation:

To find the y u would replace 'x' in the equation with one of the x's in the colom.

For example:

     y = -5 (-1) + 3

         = 6 + 3

           = 9

REMEBER = A negative times a negative is a positve.

Answer:

5 L

Step-by-step explanation:

As given in question,

1 L can fill 4.2 cups.

So, 1 cup can hold [tex]\frac{1}{4.2}[/tex] L of fluid.

Therefore,

21 cups can hold = [tex]\frac{1}{4.2}[/tex] × 21

                            = 5 L

So, there is 5 L of fluid in 21 cups.

Answer:

-7/2

Step-by-step explanation: