Mathematics Middle School

Use the numbers below to simplify the expression. Numbers may be used once or not at all.

Answers

Answer 1

Answer: 7y+10 is the answer please giveme extra points!!!

Answer 2

Answer:

Step-by-step explanation:

3y+7+4y+3= combine terms

7y+10

Related Questions

please hurry I’ve been doing school for 11 hours because I don’t wanna have any homework

Answers

Answer:

25%

Step-by-step explanation:

10 - 8

Percent increase= ---------------------------- .100% = 25%

The answer is 25% because 10-8 is 2 and 8 divided by 2 is 4 and 100 divided by 4 is 25, therefore 25% :)

Which of the following numbers is a composite number?
A. 63

B.3

C.13

D. 67

Answers

Answer:

63 is a composite number

Answer:

I don't know if this is correct or what other people think but think is A

Kato must write 60 percent of a 20-page report by tomorrow. Kato wants to determine the number of pages that he needs to write by tomorrow. Kato’s work is shown below.

Step 1: Write 60 percent as a ratio. part/whole = 60/100
Step 2: Write an equivalent ratio that has the answer in the numerator and 20 in the denominator.
Step 3: 100 divided by 20 = 5
Step 4: 60(5) = 180

What mistake did Kato make?
In Step 1, Kato should have written the ratio as 100/60.
In Step 2, Kato should have put 20 in the numerator.
In Step 3, Kato should have multiplied 100 by 5.
In Step 4, Kato should have divided 60 by 5.

Answers

She messed up in step 4.

Step 4! Hope this helps. If you want an explanation just reply in the comments to me.

A gold alloy contains 15 milligrams of gold for every 4 milligrams of copper. A jeweler uses 48 milligrams of copper to make the alloy. How much gold does the jeweler use to make the alloy?
How many milligrams?

Answers

Answer:

180 milligrams of gold

Step-by-step explanation:

1.)48 / 4=12

2.)12*15=180

Hope this answers your question

Miguel's book has 208 pages. Kristen's book has n fewer pages than Miguel's book. Write an expression to represent the number of pages in Kristen's book.
Please explain!

Answers

It’s 208 - n. Since Kristen’s book has less pages that Miguel, your answer for Kristen should be less than Miguel. It shouldn’t be more than Miguel. Also, we don’t know what n equals to. It can equal to whatever numbers there are out there. So your expression shouldn’t be evaluated, since it isn’t an equation, which is different. Hope this helped! :D

The correct expression to represent the number of pages in Kristen's book is, (208 - n)

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

We have to given that;

Miguel's book has 208 pages.

And, Kristen's book has n fewer pages than Miguel's book.

Here, Miguel's book has 208 pages.

Hence, The number of pages in Kristen's book = 208 - n

Thus, The correct expression to represent the number of pages in Kristen's book is, (208 - n)

Learn more about the subtraction visit:

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Dine lives 3/4 of a mile from school. She walked 2/3 of the way from home to school. How far did Dina walk?

Answers

Answer:

17/12 or mixed mixed number form is 1 5/12

Step-by-step explanation: all u do is add them :)

Answer:

880 Yards

Step-by-step explanation:

3/4 of a mile = 1320 yards

2/3 of 1320 = 880 yards

A pitcher's earned run average is the number of earned runs allowed per game of 9 innings. A pitcher allows 20 earned runs in 50 innings. What is the pitcher's earned run average?

Answers

Answer:

Step-by-step explanation:

In baseball statistics, earned run average (ERA) is the average of earned runs given up by a pitcher per nine innings pitched (i.e. the traditional length of a game). It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine.

The pitcher's earned run average is 3.6.

We are given that;

Number of innings=9

Now,

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.

To find the pitcher's earned run average, we need to divide the number of earned runs by the number of innings, and then multiply by 9.

This is because we want to find the average number of earned runs per 9 innings, which is the standard length of a game.

Using this method, we get:

[tex]$\frac{20}{50} \times 9 = 3.6$[/tex]

Therefore, by unitary method answer will be 3.6.

Learn more about the unitary method, please visit the link given below;

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hi, how is your day? What is an integer?

Answers

Answer:

the positive numbers and negative numbers are called integer

They are positive and negative number and if u were to put them on a number line positive would go on the right and negative would go on the left

The best and first answer with an explanation get Brainliest

An architect draws a scale model of the floorplan of a warehouse. What is the approximate area of the actual warehouse?
A. 127.5 square yards
B. 85.0 square yards
C. 56.7 square yards
D. 31.3 square yards

Answers

Answer:

Step-by-step explanation:

d. 31.3is the answer if it’s

GIVING AWAY 20 POINTS AND A BRAINLIEST TO FIRST PERSON WHO ANSWERS!! Juanita will work for 4 7/8 hours at her job on Saturday. if she also volunteers for 2 2 1/3 hours at the hospital, how many hours will she be working and volunteering on Saturday? Answers: A. 2 1/3 hours B. 4 7/8 hours C. 7 5/24 hours D. 6 13/24 hours

Answers

c is the correct answer mark person above brainliest

Again, could I please have some help with an explanation? And if possible, could someone explain basic set notation to me?

Answers

i’m pretty sure it is C because if it is both X and Y, it should be both of the numbers

To find the quotient of 3 divided by 1/6, multiply 3 by

1/6

3/6

3.

6.

Answers

6 because when you divide by a fraction u have to take the reciprocal

6 because you divide by the reciprocal

After a cold night, a puddle on the ground has become solid. Which statement accurately describes this change?
A
fall in temperature of water changed its chemical properties.
B
loss of heat in water caused the water to change phase.
C
loss of heat in water caused the water to decrease in mass.
D
fall in temperature of water turned it into another chemical.
.

Answers

Answer:

Step-by-step explanation:

Answer:

its letter B (I think I tried my best) hope it helps!

CU,
Rectangle ABCD is dilated by a scale factor of 2 with a center of dilation at the origin. What are the coordinates of the
image of point B'?
10
8
A
8
6
D
с C
4
2
2
4
6 8 10
X
-10-8-6-4-22
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-10+
Save and Exit
Next
Submit
Unmark this question

Answers

Answer:

Step-by-step explanation:

Using the graph of f(x) and g(x), where g(x) = f(k⋅x), determine the value of k.

Graph of two lines. f of x passes through 1, 2 and 2, 5, and g of x passes through one half, 2 and 1, 5.

−2
negative one half
one half
2

Answers

Answer:ye

Step-by-step explanation:

GIVING BRAINLIEST HEART AND FIVE STARS
Please define the following terms:

condensation, pressure, temperature, thermal energy.

Answers

Answer:

Step-by-step explanation:

Condensation-water which collects as droplets on a cold surface when humid air is in contact with it: the conversion of a vapor or gas to a liquid:

Pressure-is the force applied perpendicular to the surface of an object per unit area over which that force is distributed

Temperature-Temperature is a physical quantity that expresses hot and cold. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder.

Thermal energy-Thermal energy refers to several distinct physical concepts, such as the internal energy of a system; heat or sensible heat, which are defined as types of energy transfer (as is work); or for the characteristic energy of a degree of freedom in a thermal system

What is the sum of the roots of the equation √10-x+3/√10-x-4? (Clarification: 3/√10-x is a fraction. 3 is the numerator and √10-x is the denominator. √10-x+ and -4 are not apart of the fraction.)

Answers

Answer:

0.11

Step-by-step explanation:

3. Hassan helps his dad with newspaper deliveries. He gets $5 every morning and 10 cents for every paper delivered. Hassan earned $20.60 one morning. He wondered how many papers he delivered.
(a) Define the unknown in the scenario and assign it a letter or symbol.
(b) Write an equation to represent the amount of money Hassan earned.
pls help this is worth a little more than 10 pts bc itssoo important to be answered correctly, thx!

Answers

Step-by-step explanation:

l56 papers were delivered

Answer:156

Step-by-step explanation:20.60- 5= 15.60

15.60 divide by .10 (cents) is 156 papers delivered

Rebekah has $400 to spend on a video game system and games. The system cost $289.99 and each game costs $32.29. How many games can she buy with the game system?

A- No more than 2 games
B- No more than 3 games
C- No more than 4 games
D- No more than 5 games

Answers

Answer:

B- No more than 3 games

Step-by-step explanation:

add 32.29 to 289.99 until you get close to 400 without going over 400.

To find the number of distributed quantities, division operator is used. She can buy 3 games.

What is Division ?

Division is process of dividing two numbers. The result of division is the quotient and the remainder. When remainder is zero, the factors of a number are found.

Total amount to be spent on game system and games = $400.

The cost of the system = $ 289.99

The cost of each game = $ 32.29

Thus, the total amount left for buying games is the difference of the total amount and the cost of the system.

It is given as follows,

Amount left for buying games = 400 - 289.99

= $ 110.01

Now, total number of games to be bought can be calculated by dividing the remaining amount by the rate of each game as below,

Total number of games = 110.01/32.29

= 3.406

Since the number of games cannot be a decimal value, approximate 3.406 to 3.

Hence, the number of games Rebekah can buy is 3.

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AHH HELP ME AGAIN :P THERES ONE MORE AFTER THIS

Answers

Answer:

26.25

Step-by-step explanation:

y = 8.75(3)

y = 26.25

The answer is $26.25

[tex]2b + 8 - 5b +3 = -13 +8b -5[/tex] solve for b

Answers

Answer: b=29/11
Which is equal to : 2 7/11

B: 29/11
Simplified: 27/11

Alex wants to buy a case of drinks, he doesn’t have enough. The cost of the case is $30. He already has $2. He gets $8 every hour for work. How many hours does he need to work to get the amount he needs?
Example:
3x + 12 ≤ 35
3x + 12 - 12 ≤ 35 - 12
3x ≤ 23
3x/3 ≤ 23/3
X≤ 7.6667
(solve it like that please) ASAP

Answers

Answer:

So the answer is 3 and an half of a hour(3.5 hours)

Step-by-step explanation:

$8 times 3 = 24 + the $2 he has =$26 + half an hour($4) =$30

8 times 3 = 24

plus $2 = $26

since he gets $8 for an hour of work and we only need $4, we can make him work half an hour

so $26 + $4 =$30

explain what is happening at this step in the solving equation process.

[tex]10-6x=4+5x[/tex]

[tex]7-6x=1+5x[/tex]

Answers

Answer: 3 is being subtracted from both sides of the equation

Explanation: 4-3=1 , 10-3=7

3 is being subtracted from both sides of the equation :)

please answer I will give the brainliest if FIRST and RIGHT

Answers

Answer:

Step-by-step explanation:

I got - 70/9 or -7 7/9

The third option.

1/3y-7/5x+2/3-2/3y-4/9

I did my math and looked it up to make sure I was right and it’s the second expression

Which two temperatures have a sum of 0 degrees Celsius? 4 degrees Celsius and 4 degrees Celsius 4 degrees Celsius and −4 degrees Celsius −4 degrees Celsius and −4 degrees Celsius 4 degrees Celsius and 0 degrees Celsius

Answers

Answer:

The second one

4 degrees Celsius and -4 degree Celsius

Step-by-step explanation:

It is indeed the second answer

One brand of cookies is sold in three different box sizes: small, medium, and large. The small box has half the volume of the medium box. The large box has twice the volume of the medium box. The volume of the medium box is x.

If someone buys one of each size, which expression shows the combined volume of the three boxes?

A
1.75x

B
2.5x

C
3.5x

D
7x

Answers

Answer:

Step-by-step explanation:

An expression is a combination of numbers, variables, functions such as addition, subtraction, multiplication or division, etc.

The expression that shows the combined volume of the three boxes is 3.5x.

Option C is the correct answer.

What is an expression?

An expression is a combination of numbers, variables, functions such as addition, subtraction, multiplication or division, etc.

We have,

Three box sizes:

Small, Medium, and Large.

The volume of the medium box is x.

The volume of the medium box = x ____(1)

The small box has half the volume of the medium box.

The volume of the small box = x/2 _______(2)

The large box has twice the volume of the medium box.

The volume of the large box = 2x _____(3)

Combining (1), (2), and (3) we get,

= x + x/2 + 2x

= (2x + x + 4x) / 2

= (7/2)x

= 3.5x

Thus the expression that shows the combined volume of the three boxes is 3.5x.

Learn more about expressions here:

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what does fifty less than two times a number
please do it in the right order.

Answers

Answer:

Step-by-step explanation:

2x-50

2x-50 is the answer:)

The table shows the battery life of four different mobile phones:
Mobile Phone Battery Life Phone
Battery Life (hours)
A 20
B 25
C 10
D 18
If 8.45% of the battery life of each mobile phone is used in a day by a typical user, which mobile phone would use a total of 1.69 hours of battery life in a day?
Phone A
Phone B
Phone C
Phone D

Answers

Answer:

Using quick mental math, we can do 8% of 10 to get 0.8, which is close to the value of 0.0845*10. Also fairly quick is moving the decimal point over 1 spot to the right and we go from 0.0845 to 0.845 and that rounds to 0.8 when rounding to one decimal place. Recall that 8.45% = (8.45/100) = 0.0845

If you want to compute out the four results with a calculator, then it would look like this:

0.0845*20 = 1.69

0.0845*25 = 2.1125

0.0845*10 = 0.845

0.0845*18 = 1.521

and this shows that no other result (but choice C) is close to 0.8

So that's why the answer is choice C

Step-by-step explanation:

Without computing, decide whether the value of each expression is much smaller than 1, close to 1, or much greater than 1.

Label your answers a - f. Just type smaller, close, or greater.

File Name: AAAASA

I don't know why . . .

Answers

Answer:

a. greater (divided by small = large)

b. close (almost the same value)

c. smaller or close depends on what close means

d. smaller (2 divided in so many parts is very small)

e. greater

f. smaller (already small divided in even smaller parts)

Step-by-step explanation:

A square has a perimeter of 36millimeters.
What is the area of the square?
square millimeters

Answers

i think it’s gonna be 144 mm, the area of a square is equal to one side length times 4, in this case it would be 36x4 which equals 144 :)

If a square has a perimeter of 36 mm, then all four sides were added. 36/4 = 9 mm
So 1 side equals to 9 mm.
As in area, one side times another side will be your area.
So 9 x 9 = 81

So your answer will be 81 square mm.

Hope this helped :D

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