There are 13 books on a shelf. 5 of these books are new. The rest of them are used.

Answer: 8.5

Step-by-step explanation:

espanol- deberia ser 8.5

english- it should be 8.5 good luck!

Answer:

238 mg

Step-by-step explanation:

340 x 0.30 = 102

340 - 102 = 238

Answer:

-123-b

Step-by-step explanation:

-116-4-(b+3)

-123-b

Answer:

I know this is late but the actual answer is d=3s+-50

Step-by-step explanation:

The reason is because he is swimming down, so yeah.

Answer:

C

Step-by-step explanation:

2.09x=y

eq C

Hope this helps plz hit the crown :D

Answer:

I think that it is C. y = 2.09x

Step-by-step explanation:

Hope this helped have an amazing day!

Answer:

so its will be the equal number

Step-by-step explanation:

pls dont get mad if I'm wrong I tried :)

Answer:

v>19/6

Step-by-step explanation:

We have been given that two figures. The scale factor of Figure A to Figure B is 3:8. We are asked to find the value of x.

We will use proportions to solve our given problem.

Figure A/Figure B=3/8

Upon substituting the ratio between Figure A and Figure B, we will get:

3/8=×/24

3/8•24=×/24•24

3/1•3=×

9=×

Therefore, the value of x is 9.

Final Answer: [tex](x + 7)(x + 8)[/tex]

Steps/Reasons/Explanation:

Question/Given: Factor the polynomials [tex]x^{2} + 15x + 56[/tex]

Step 1: Ask: Which two numbers add up to [tex]15[/tex] and multiply to [tex]56[/tex]?

[tex]7[/tex] and [tex]8[/tex]

Step 2: Rewrite the expression using Step 1.

[tex](x + 7)(x + 8)[/tex]

~I hope I helped you :)~

Answer:

The answer to the chart is y=x-1

Answer:

43.98

Step-by-step explanation:

2piR

BTW the 7 is the radius not the diameter

Answer:

The answer is: x-4y=8

Answer:

1245

Step-by-step explanation:

You have to multiply 415 and 3, since 10 x 3 = 30

415 x 3 = 1245

Answer:

She can write 1245 pages in 30 mins.

Step-by-step explanation:

If 10*3= 30 then multiply 415 by 3 or add 415 3 times and you will get your answer. Hope this helped you!! Give brainliest.

Answer:

B. 4

Step-by-step explanation:

Determine the constant of variation for the direct variation given.

(0, 0), (3, 12), (9, 36)

A. 3

B. 4

C.12

Direct variation is given by:

y = kx

Where,

k = constant of variation

(3, 12)

x = 3; y = 12

y = kx

12 = k*3

12 = 3k

k = 12 / 3

k = 4

(9, 36)

x = 9; y = 36

y = kx

36 = k * 9

36 = 9k

k = 36 / 9

= 4

k = 4

Constant of the variation = 4

Answer:

2 = 1 + 1

3 = 2 + 1

5 = 3 + 2

8 = 5 + 3

13 = 8 + 5

21 = 13 + 8.

Fibonacci numbers are found in many structures in nature.

We have just found that these cacti enclose Fibonacci numbers 13 and 21.

13 and 21

Step-by-step explanation:

Answer:

The correct answer would be 25

Step-by-step explanation:

32+(−3)(4)−(−5)

=32+−12−(−5)

=20−(−5)

=25

Hope this helps have an amazing day!!

Answer:

121

Step-by-step explanation:

32+(-3)×4-(-5)

29×4-(-5)

116-(-5)

116+(+5)

121

Final Answer: [tex]5x - 30[/tex]

Steps/Reasons:

Question: Simplify [tex]5(x - 6)[/tex]

Step 1: Expand by distributing the terms.

[tex]5x + 5[/tex] × [tex]-6[/tex]

Step 2: Simplify [tex]5[/tex] × [tex]-6[/tex] to [tex]-30[/tex].

[tex]5x - 30[/tex]

~I hope I helped you :)~

Our equation looks like:

[tex]5(x-6)[/tex]

This means that we will need to distribute. This means that we need to multiply everything inside the parenthesis by the number outside of the parenthesis. (Note: you only distribute when variables are involved.)

[tex](5 \cdot x)-(5 \cdot 6)[/tex]

Simplify:

[tex]5x-30[/tex]

We cannot simplify any further, so we know that our equation, until we know what x equals, is [tex]5x - 30[/tex].

Answer:

100

Step-by-step explanation:

10 puls 10 10 times lol

Ricky had 1203 hits Pedro had 1484

Answer:

30 percent

Step-by-step explanation:

Answer:

C.) y=-2/3+4

Step-by-step explanation:

You can look at the y-intercept to find the equation really quickly!

For example, the line crosses the y-axis at the value of 4, therefore, the y-intercept is 4.

The only option with a y-intercept of 4 is C

Answer:

The volume of the 80% ammonia that is to be drained before water is added is 7.5 quartz

Step-by-step explanation:

The volume of the ammonia and water mixture = 5 gallons

The percentage of ammonia in the mixture = 80%

The volume of ammonia desired = 5 gallons

The percentage concentration of ammonia desired = 50%

The diluting solution = Pure water

The measure of 4 quarts = 1 gallon

Therefore, we have, by equivalence solutions;

80% × x gallon = 50% × 5 gallons

x gallon = 50% × 5 gallons/(80%) = 3.125 gallons

x = 3.125 gallons

The volume of the 80% ammonia that is to be drained = 5 gallons - 3.125 gallons = 1.875 gallons

4 quarts = 1 gallon

1 gallon = 4 quarts

∴ 1.875 gallons = 4 × 1.875 quartz = 7.5 quartz

The volume of the 80% ammonia that is to be drained before water is added = 7.5 quartz

Answer:

7.5

Step-by-step explanation:

Answer:

B. 4x-8

Step-by-step explanation:

Answer:

Step-by-step explanation:

14.16*30%= 4.248 or 4.25 off

Answer: the last second one: 3/4 0.8 94%

Step-by-step explanation:

because 3/4 is smaller than one so it has to go first.

hope it helps :) pls give brainliest

3/4, 0.8, 94%

                                               DO IT HES RIGHT

Answer:

x = -3

Step-by-step explanation:

3x + 10 -10 = 1 - 10

3x = -9

3x / 3 = -9/3

x = -3

Step-by-step explanation:

-_-

Answer:

0.875

Step-by-step explanation:

To find the decimal, you divide the 21 by the 24.

21/24 = 0.875