Mathematics High School

Leslie and Marvin, both teachers, are adding books to their class libraries. Leslie's classroom started out with a collection of only 20 books, but she plans to purchase an additional 3 books per week. Marvin's library started out with 40 books, and he has enough money in his budget to purchase another 1 book per week. At some point, the two teachers' libraries will contain the same number of books. How many weeks will that take?

Answers

Answer 1

Answer:

10 weeks

Step-by-step explanation:

L = 20 + 3x

M = 40 + x

20 + 3x = 40 + x

3x = 20 + x

2x = 20

x = 10

Related Questions

of liters of water are enough to water of the plants in the house, how much water is necessary to water all the plants in the house? Write a multiplication equation and a division equation for the situation, then answer the question. Show your reasoning.

Answers

Answer:

2/5 x ? = 4/3?

4/3 / 2/5= ?

Quick method is quick change flip, Change the division sign into multiplication and switch the values in the denominator and numerator of the second fractiom

4/3 x 5/2 = 20/6

simplify to 10/3

x or ? = 10/3

written as a mixed number is is 3 1/3

Step-by-step explanation:

HELP, WILL GIVE 100 POINTS
Which sum or product is rational? Choose all that apply.
A.
−12+3
B.
(7–√)(34)
C.
2.7 + 45
D.
(78)(9–√)
E.
4 + 5–√

Answers

Answer:

It's A trust me! :D

Step-by-step explanation:

The ratio of boys to girls in the school choir is 4:7. If there are 16 boys, how many girls are in the choir?
F 19
G 28
H 27
J32

Answers

28 girls in choir hope it helps

Diana buys a shirt for $14 plus and
pays 8% tax. Eddie buys pants for $25
plus and pays an 8% tax. Enter the
difference in the amount Diana and
Eddie paid, including the tax. Round
your answer to the nearest cent.

Answers

14+8% = 15.17. 25+8%= 27. 11.83. = 11.8

1.4t - 0.4(t - 3.1) = 5.8

Answers

the answer is t=4.56

What is the line of this slop :( ?

Answers

The slope is 2

Find two points on the line then do the slope formula. That’s how I got my answer. Hope this helps!

The slope of the line is positive 2

Use the figure of triangles AABE and AFCG along with the information below to answer the following questions,
Given: AC = EG
Prove: AE = CG
B
D
A
C
E
G
Statement
Reason
1. AC = EG
2. CE = CE
2.
3. AC + CE = CE + EG 3
4. AC + CE = AE
4
CE + EG = CG
5. AE = CG
What is the reason for Statement 2?
Use the figure to answer the question.
OA.
Reflexive Property
B.
Addition Property of Equality
Ос.
Given
OD
Segment addition

Answers

Answer:

Answer attached

Step-by-step explanation:

A population of 752,000 people decreases at a rate of 1.4% each year. To the nearest whole number , what will be the population after 18 years?

Answers

Answer:

562496

Step-by-step explanation:

I think

Factorise fully 6x² - 15x

Answers

Answer:

3x(2x - 5)

Step-by-step explanation:

because you have x² that means that you have to timse x by x to get x².

6 divided by 15 gets you a decimal but both number goes into the 3 times table

Therefor 6x² - 15x = 3x(2x-5)

If you need to check just times 2x by 3x which would get you 6x² and 5 by 3x which would get you 15x

Answer:

3x(2x-5)

Step-by-step explanation:

Bert's age plus twice Ernie's age is 30. Three times Bert's age plus 8 times Ernie's age is 108. How old are Bert and Ernie?

Answers

Answer:

Bert's age is 15 Ernie's age is 53

Step-by-step explanation:

Which list contains three multiples of 8?
A.
32, 36, 48
B.
8, 18, 28
C.
80, 84, 88
D.
48, 56, 72

Answers

Answer:

Step-by-step explanation:

Answer:

The answer is D. 48,56,and 72 are all multiples of D

what is the relationship between the number of sides in a polygon and the sum of the measures of the interior angles ?

Answers

Use this formula: 180(n-2), 'n' being the number of sides of the polygon. But you are right about the pattern of the sum of the interior angles.

Tell whether (5,2) is a solution of x - y<0.

Answers

Answer: yes it is

Step-by-step explanation:

How many liters of water should a chemist mix with 10 liters of a 24% sodium solution to get an 8% sodium solution?

Answers

Answer:

Step-by-step explanation:

How many liters of water should a chemist mix with 10 liters of a 24% sodium solution to get an 8% sodium solution?

So to line it up, I have:

All L liters.

10*24 + L*0 = (10+L)*10 ******** You said 8%

10*24 + L*0 = (10+L)*8

240 = 80 + 8L

L = 20 liters

Hasta que lo consigamos, lo conseguiré

Hasta que lo consigamos

Hasta que lo consigamos, lo conseguiré

Hasta que lo consigamos

Dices que todo lo que necesitas es amor constante

Cuando lo intento, juro que nunca es suficiente, lo arruiné

Tal vez esto de aquí no es para nosotros

Cariño, me dejas ir y yo te aparto

Lo dejo ir, no vas a tener eso

Lo hacemos como estrellas de rock

Sexin 'en mi habitación de hotel, y estamos tan ruidosos

Más alto que una nube de humo

Sombras al hacer 95 con la parte superior hacia abajo

Puedo sonar loco

Porque vamos de un lado a otro

Un minuto te odio, luego te amo

Así es como es

The crew on a ship is made up of 8 men. The rest are women. 25% of the crew are men. How many people are on the crew?

Answers

Answer:

32 people are on the crew

Step-by-step explanation:

If 8 people equal 25%, you can multiply it by 4 to get 100%. 24 people are women and 8 are men on the crew.

Ms. Yost has 20 boxes of markers. She buys 420% more boxes. How many boxes will she have in all?
.

Answers

Answer:

84 boxes

Step-by-step explanation:

420% = 4.2

4.2 x 20 = 84

6x + 2 - 8x + 7 = 4x + 1 A. 4/3 B. 3/4 C. -4/3 D. -3/4 oc A D B

Answers

Answer:

Step-by-step explanation:

Given

6x + 2 - 8x + 7 = 4x + 1 ← simplify left side

9 - 2x = 4x + 1 ( subtract 4x from both sides )

9 - 6x = 1 ( subtract 9 from both sides )

- 6x = - 8 ( divide both sides by - 6 )

x = [tex]\frac{-8}{-6}[/tex] = [tex]\frac{4}{3}[/tex] → A

Can someone please help me?

Answers

Yes it is, the answer is true

i’m dvmb i’ll give brainliest

Answers

Answer:

b (-3,3)

Step-by-step explanation:

it's where the two lines intersect

hope this helps

Question 18
Incorrect
2 tries left. Please try again.
Nicholas broke his leg and has to wear a cast for a set number of days. Nicholas has been wearing the cast for 45 days, or 90% of the required
time. How many total days does Nicholas have to wear the cast?
days
Need help with this question?
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Answers

Answer:

50%

Step-by-step explanation:

Melissa is making clothes for her dolls. She has 7/8 yard of fabric. Each doll shirt requires 2/7 of a yard of fabric. How many whole shirts can she make for her dolls?

Answers

Answer:

She can make three shirts and will have 7/56 left.

Step-by-step explanation:

49/56-14/56=35/56 (one shirt) 35/56-14/56=21/56 (two shirts) 21/56-14/56=7/56 (three shirts)

If you are trying to decide whether a system of equations has a solution, would you rather have the equations or the graphs? Why?

Answers

Answer: Graphing

Step-by-step explanation:

Graphing is the best method to use when introducing a new student to solving systems of two equations in two variables, because it gives them a visual to recognize what they are looking for. Graphing is less exact and often takes more time than the other methods.

* Hopefully this helps!

At the time when we have to decide whether the system of equations has a solution so here we do the graphing.

Usage of graphing:

It is considered to be the best method at the time when it introduced to the new student for solving the system of 2 equations in 2 variables as it provides the visual to record what actually they have looking.

Also, graphing is considered to be less exact and taken more time as compared to the other methods.

Learn more about graph here: https://brainly.com/question/24299008

For a chemistry experiment 3/4 of an ounce of a certain chemical is needed. if a bottle of the chemical holds 96 ounces, how many times can the experiment be completed?

Answers

Answer:

The experiment can be completed 128 times from 96 ounce bottle of chemical.

Step-by-step explanation:

Given that:

Ounces of chemical hold by bottle = 96 ounces

Chemical used for experiment = 3/4 of an ounce = 0.75 ounce

Number of experiments = [tex]\frac{Chemical\ in\ bottle}{Chemical\ used\ for\ experiment}}[/tex]

Number of experiments = [tex]\frac{96}{0.75}[/tex]

Number of experiments = 128

Hence,

The experiment can be completed 128 times from 96 ounce bottle of chemical.

Find the area of the rhombus.

Answers

Answer:

Area = 90

Equation:

See attached image for equation.

convert the following equations from standard form to slope-intercept form.
6x+2y=10
x+y=-3
4x+y=-1
10x-2y=-6
6x-10y=20

Answers

Answer:

1. y = -3x + 5

2. y = -x - 3

3. y = -4x - 1

4. y = 5x + 3

5. y = 3/5x - 2

Step-by-step explanation:

3 4/5 + 4 2/3 + 2 13/15

Answers

Answer:

11\frac{1}{3}

11 1/3

8y−5<3

dont worry about this

Answers

Answer:

Y<1

Step-by-step explanation:

Answer:

Inequality Form:

y<1

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

The equation 4.05p+14.40=4.50(p+3) represents the number p of pounds of peanuts you need to make trail mix. How many pounds of peanuts do you need for the trail mix?

You need ____ pounds of peanuts for the trail mix.

Answers

Answer:

Step-by-step explanation:

4.05+14.40=4.50p+13.50

4.05p-4.5p=13.5-14.4

-0.45p=-0.9

p=2

Evaluate each expression if a = 3 , b = 5 and c=1 b-c

Answers

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

a = 3, b = 5, c = 1

b - c

Step 2: Evaluate

Substitute: 5 - 1Subtract: 4

pls and pls what is the easy way to solve maths problems or how can I solve maths problems with ease?

Answers

Answer:

Ok here is my pro tip:

Step-by-step explanation:

Use both halfs of you brain at the same time, causing you to passout and have your head hit the keyboard, giving you the correct answer

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