Mathematics Middle School

Add the algebraic expressions.
a. -6p²+8q² - 2pq- 5 and 2p² -3q² -2pq+3
b. 5x+6y and -8x -3y

Grade8

Answers

Answer 1

Answer:

a=-4p^2-4pq+5q^2-2

b=-3x+3y

Step-by-step explanation:

 

Related Questions

PLEASE HELP! Due TODAY:

Write equation to represent the relationship between d(distance traveled) and t(time). Use given variables (lower case), no spaces.

Answers

Answer:

y=2x

Step-by-step explanation:

this is because if you divide 120 by 60 you get 2

Distance travelled = 60*time (hours)
d=60t

You are buying fruit to make fruit baskets. Apples come in bags of 20. Oranges come in bags of 16 and bananas come in bags of 32.

2. You decide that not only must the fruit baskets be identical, but each one must have the same number of apples, oranges, and bananas.

a. What is the least number of bags of each fruit you need to have the same number of apples, oranges, and bananas? I

b. How many of each type of fruit do you have?

c. There must be at least 5 but no more than 10 of each type of fruit in each basket.

How many different ways can you arrange the fruit baskets when using all of the fruit? Explain your reasoning.

Answers

Answer:

You will need to find the least common multiple of 20,16, and 32. The least common multiple of all those will be 160. you will need 8 bags of apples, 10 bags of oranges, and 5 bags of bananas. so for a I believe it would be 8 bags of apples 10 bags of oranges and 5 bags for bananas. as for b it should be 160. and for c  you could arrange either 5 of each fruit for 32 baskets, 10 of each for 16 baskets, or 8 of each for 20 baskets

Step-by-step explanation:

The frequency table below shows a student’s quiz scores. One data value in the table is missing. If the mean of the data set is 2.2, what is the score for the missing data item?

A. 0
B. 1
C. 2
D. 3

Answers

Answer is B
Total scores/total frequency =mean
54/24=2,25
If you added a score of 1
55/25=2,2

Therefore the answer is b

Answer:Answer is B

Total scores/total frequency =mean

54/24=2,25

If you added a score of 1

55/25=2,2

Step-by-step explanation:

hope it helps you

Find the measure of

Answers

Answer:

Step-by-step explanation:

hello this is

Answer:

Step-by-step explanation:

There are two spinners containing only blue and green slices.
Spinner A has 4 green slices and 16 blue slices.
All the slices are the same size.
Spinner B has 9 green slices and 3 blue slices.
All the slices are the same size.

Each spinner is spun.
List these events from least likely to most likely.
Event 1: Spinner B lands on a blue slice.
Event 2: Spinner B lands on a green or blue slice.
Event 3: Spinner A lands on a yellow slice.
Event 4: Spinner A lands on a green slice.

Answers

Answer:

Step-by-step explanation:

2,1,4,3
explanation
event 2 has to happen because there are no other colors.
event 1 will likely come next because there are more blue slices than green slices.
event 4 will come best because it is less likely for it to land on a green slice than a blue slice
event 3 can never happen because there are no yellow slices

This Stem-and-Leaf Graph represents the students’ test scores in History. What is the median for the data in this Stem-and-Leaf plot?

A. 52
B. 59
C. 65
D. 73

Answers

Answer:

C. 65

Step-by-step explanation:

The 5 stem has scores of 52, 55, and 57.

The 6 stem has scores of 64, and 66.

The 7 stem has scores of 73, 75, and 79.

Together, the data is: 52, 55, 57, 64, 66, 73, 75, and 79.

The median is the middle number. We can cross out the two outside numbers and go in from there.

52 and 79 are crossed out. 55 and 75 are crossed out. 57 and 73 are crossed out.

When there are two numbers in the middle instead of one (ideally, the one left after this process is the answer), you go between those. Between 64 and 66 is 65.

please help i only
have 3 more minutes to complete

Answers

Answer:

option d

Step-by-step explanation:

the answer is ddddddd

Question for points :3
The base of a parallelogram is 14 inches, The area of the parallelogram is 98 square inches. Find h the height of the parallelogram.

Answers

Answer:

7 inches

Step-by-step explanation:

The formula for the area of a parallelogram is given by A = bh, where A is the area, b is the base, and h is the height.

The parallelogram base is 14 inches, and the area is 98 square inches. Substituting these values into the formula, we get:

98 = 14h

Solving for h, we can divide both sides by 14:

h = 7

Therefore, the height of the parallelogram is 7 inches.

divide both sides by 14 and h=7

A random sample was taken to determine whether students from a certain classroom prefer to shop at Store A, Store B, or Store C. Which of the following would represent a random sample?

A. putting all the names in alphabetical order and selecting every fourth
B. student selecting all the students that have a last name that begins with R
C. selecting all the girls
D. putting all the names in a hat and selecting six student

Answers

D is the answer I think hope it helps
D is the correct answer for this question

Write and evaluate an expression that tells you to subtract 6 from 9 then subtract the difference from 12 and then multiply by 3 use at least two types of grouping symbols

Answers

Step-by-step explanation:

One possible expression using two types of grouping symbols is:

3 × [(12 - (9 - 6))]

This expression first subtracts 6 from 9 to get a difference of 3, then subtracts that difference from 12 to get a result of 9. Finally, it multiplies 9 by 3 to get a final answer of 27. The grouping symbols used are parentheses to group the subtraction of 6 from 9, and then another set of parentheses to group the subtraction of that difference from 12. The outermost grouping symbols are the multiplication symbol and the pair of brackets used for clarity.

I need this right now

Answers

If I were to answer this, I would do

2=-3(5)+b
2=-15+b
2+15=b
b=17

The answer for B is 17

Answer:

b = 17

Step-by-step explanation:

Match each scenario to the absolute value expression that describes it.

1. the amount of change when the temperature rises from 5°C to 13°C

2. the change of an account balance when spending $8

3. the change in depth when diving down 7 meters in the ocean

4. the amount of improvement when increasing your grade by 7 points

5. the change in height when climbing a 5-foot wall

6. the distance moved when going backwards five spaces in a board game

|+7|
|+8|
|-7|
|-8|
|+5|
|-5|

Answers

The answer to the question you are looking is 5+1

Step-by-step explanation:

1) +8

2) -8

3) -7

4) +7

5) +5

6) -5

:)

least to greatest -1, -1/2, -1/4, 1/8, 3/4

Answers

Answer:

-1, -1/2, -1/4, -1/8, 3/4

Answer:     -1, -1/2, -1/4, 1/8, 3/4.

Step-by-step explanation:

The orange shape is a dilation of the black shape. What is the scale factor of the dilation?

Answers

Answer: 1/3

1/3 × 15 = 5

1/3 × 6 = 2

Step-by-step explanation:

yes 1/3 scale dilation

Find 25 more than 15% of 300

Explain

Answers

Answer:

70

Step-by-step explanation:

The explanation is given there...

Answer: 70

10% of 300 = 30
5% of 300 = 30/2 = 15
30+15=45
45+25=70

question is below please help me answer it

Answers

A. 1/10, 3/25, 7/50, 9/75, 13/100
1/10= 0.1
3/25= 0.12
7/50= 0.14
9/75= 0.12
13/100= 0.13

B.largest.



Not sure if this helped any. Sorry if it didn’t :(

Reflect
How are metric measurement conversions and customary measurements conversions
alike?

Answers

Answer: The answer is given below

Step-by-step explanation: How are customary and metric the same?

The metric system uses units such as meter, litre, and gram to measure length, liquid volume, and mass, just as the U.S. customary system uses feet, quarts, and ounces.

The customary system: this system of measurement is primarily used in the United States, which include the inch, foot, mile, pound and cup. The metric system: the system of measurement is primarily used in science and in countries outside the United States, which include meter, kilometer, liter, gram and kilogram.

PLEASE HELP! Due TODAY
Write equation to represent the relationship between d(distance traveled) and t(time). Use given variables (lower case), no spaces.

Answers

Answer:

21

Step-by-step explanation:

127137-3218

12339

31

13223

=21

The equation is y=60x because 1 km per hour

Interquartile range again.... Please help 15 pts.

Answers

It will be 52.7 because there is a pattern
it’s 52.7 for the interquartile range and due to the pattern

A wallet contains 23 bills. All the bills are $1 bills and $5 bills. There are 7 more $1 bills than $5 bills. How much money does the wallet contain?

Answers

Answer:

Step-by-step explanation:

Let's say x is the number of $1 bills and y is the number of $5 bills. We know that:

x + y = 23

x = y + 7

We can use rearrange the second equation and add them together to find x. Then, we can plug x into any one of our equations to find y and calculate how much money is in the wallet.

x + y = 23

x - y = 7

2x = 30

x = 15 $1 bills

15 = y + 7

y = 8 $5 bills

15 * $1 + 8 * $5 = $15 + $40 = $55

Hope this helps!

Match each scenario to the absolute value expression that describes it.

1. the amount of change when the temperature rises from 5°C to 13°C
|+7|
2. the change of an account balance when spending $8
|+8|
3. the change in depth when diving down 7 meters in the ocean
|-7|
4. the amount of improvement when increasing your grade by 7 points
|-8|
5. the change in height when climbing a 5-foot wall
|+5|
6. the distance moved when going backwards five spaces in a board game
|-5|

Answers

1.) |5 - 13| = |-8| = 8

2.) |-8| = 8

3.) |-7| = 7

4.) |7| = 7

5.) |5| = 5

6.) |-5| = 5

What is (-6) less than 0

Answers

Answer: +6

Step-by-step explanation:

0 - (-6)

= 0+6

= 6

6 is the answer to your question

Answer

1. Serena has 1,532 photographs. She has 40 photo albums. Each album holds 36 photographs. Does Serena have enough albums to hold all the photographs?

2. A group of 1,058 people are called in for jury duty. A jury is made up of 12 jurors and 2 alternates. How many complete juries can be formed from the jury pool?

3. Gary's backpack weighs 1.2 pounds. His math textbook weighs 3.75 pounds, and his science textbook weighs 2.85 pounds. How much will his backpack weigh with the math and science textbooks in it?

4. Steven made punch by mixing 2.8 liters of orange juice, 0.75 liters of pineapple juice, and 1.2 liters of sparkling water. How many liters of punch did Steven make?

Answers

#1:

Serena does not have enough albums to hold all the photographs.

Work:

40*36 = 1440

#2:

A group of 1,058 people is called in for jury duty.

Work:

A jury is made up of 12 jurors and 2 alternates.  

1 jury = 12 jurors + 2 alternates = 14 members

So, the number of complete juries that can be formed is

= 1058/14 = 75.57

#3:
Gary's backpack will weigh 7.8 pounds with the math and science textbooks in it.

Work:

Total weight = backpack weight + math textbook weight + science textbook weight

Total weight = 1.2 + 3.75 + 2.85

Total weight = 7.8 pounds

#4:

Steven made 4.75 liters of punch.

Work:

Liters of Punch = orange juice + pineapple juice + sparkling water

Liters of Punch = 2.8 + 0.75 + 1.2

Liters of Punch = 4.75

List the decimal numbers 1.54, 1.9, 1.09, and 1.5 in order from least to greatest

Answers

1.09, 1.5, 1.54, 1.9
1.09 , 1.5 , 1.54 , 1.9

Martin used a coordinate plane to design the garden shown. Each unit on the grid represents 10 yards.

How many square yards will the garden be after it is built? What is the total AREA of the garden?

Answers

The best way to solve this is to break the shape up into areas you know how to solve.

Lets divide this into the big rectangle being separated from the smaller rectangle at the bottom.

To find the height of the big rectangle, subtract one y-coord of 30 from the other y-coord 80.

80-30=50

To find the length of the big rectangle, subtract one x-coord of 10 from the other x-coord of 100.

100-10= 90

Multiply these to get the area of the big rectangle:

90 x 50 = 4500 units squared

Next, find the smaller recatngle’s area by repeating the previous steps:

Height: 30-10 = 20
Length: 70-40 = 30

Now find the area:

20 x 30 = 600 units squared

Finally, add both of these areas up to find the total area for the original shape:

4500 + 600 = 5100 units squared

Hope this helped!

Someone pls do this you don’t have to do all questions. The questions r in the photo

Answers

Step-by-step explanation:

Refer to workings and add the units.

Finish by doing the additions

1. Add beef, onion, potato, tomato and asparagus in the workings

2. Add chicken pea, lentils, onion, potato, tomato and asparagus.

Deduct the total in number 2 from the total in number 1 to get the amount saved.

3. A container of rice milk 3.49

2lb of strawberries at 4.99 per lb= 2 x 4.99 = 9.98

6 babanas at 0.75 each = 6x 0.75 = 4.5

Add together

3.49 + 9.98+4.50 = $17.97

Remember to add units in your workings

The answer is I don’t know and don’t disturb

PLEASE HELP ASAP NEED PROVE AND ILL GIVE BRANLIST IF YOU ARE CORRECT

Options

A 1/2

B 2

C 1/4

D 4

Answers

Answer:

It will be an option A) 1/2

Step-by-step explanation:

Answer: A

Step-by-step explanation:

Which inequality is not true?

- 7/8 < -0.60
- 7/8 > -0.50
-7/8 > - 15/16
- 7/8 < - 1/4

Answers

Answer:

Step-by-step explanation:

First off let's convert -7/8 to make the comparison easier: -7/8 = -0.875

A. -0.875 < -0.60 True

B. -0.875 > -0.50  is False

C.  -0.875 > - 15/16.  -15/16 = -0.9375 True

D. -0.875 < - 1/4       -1/4 = -0.25 True

B. -7/8  > -0.50  is False

Hope that helps! :)

The prize of a pencil is Rupees 12.5 What is the prize of 9 such pens?

Answers

Answer:

Price of 1 pencil is 12.5

price of 9 pencil is 12.5*9

=112.5

Answer:

112.5 rupees

Step-by-step explanation:

12.5 x 9 = 112.5

A number s minus 2.4 is at least 8 ( please I need this quick)!?

Answers

i think bro still needs the answer

s - 2.4 > 8
_
remember to make sure you have the line under the > sign because it would be s - 2.4 is greater than or equal to 8
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