Mathematics Middle School

7y+5z-2y+z

grade 7 math

Answers

Answer 1

Answer:

Step-by-step explanation:

7y+5z-2y+z

Group the two y and the two z together

7y-2y = 5y

5z+z= 6z

(a variable with out a number is = to 1)

so it would be  5y+6z

Hope this helps

Answer 2
The answer would be 5y+6z.
The reason for this is because only like terms can be added and subtracted.
(7y-2y) and (5z+z)

Related Questions

The sum of two numbers is -9. Which expressions could represent the addition problem?

PLEASE HELP

Answers

The answer is B all the others basically go into positive

The correct answer is B:

A cannot be right because -10 -1 is -11

B has to be right because -10 + 1 is -9

C cannot be right because 10 - 1 is 9, but it’s positive

D cannot be right because 10 + 1 is 11

Remember if you have 2 negatives it’s positive, and if you have 1 negative and 1 positive it’s negative

Make a the subject of the formula:
2a+9b=4c

Answers

I think this is correct a=2c- 9/2b

Answer: 9b-4c=2a

Change from addition to subtraction problem to make 2a the answer.

The equations below represent the numbers y of tickets sold after x weeks for two different local music festivals. Create a table for the ticket sales each week.

Answers

Answer:Part a) 3.5 weeks

Part b) 185 tickets

Step-by-step explanation:

PLEASE HELP!!!!!!A set of data includes 98 data points ranging from 0 – 160. If the data is split into classes with a range of 10 (1 – 10, 11 – 20, etc), and there are no values that fall in the class 81 – 90, what can you say about the data?

1 The mean of the data will not be between 81 – 90.
2 All the data lies below 80.
3 The relative frequency of the class 81 – 90 is 0.
4 The median could be in the range 81 – 90.

Answers

A b c ok a Gabe n m j h
I think the answer is 1 because it can’t be 2 because it goes up to 160. It can’t be the 3rd one because the is no data so it can’t be frequent

Find all the solutions to z^4 = -4 in complex numbers.
The complex numbers should be a+bi, where a and b are real

Answers

Answer:

z = 1 - i

z = 1+i

z = -1 - i

z = -1 + i

Step-by-step explanation:

I think?

Think about the division expression 2 1/5 ÷ 3/5​

Answers

Answer: hope this helps ♡

2⅕ ÷ ⅗ = 11/3 or 3⅔

Step-by-step explanation:

2⅕ ÷ ⅗

= 11/5 (2*5+1) ÷ ⅗

= 11/5 × 5/3 (flip the fraction)

= [tex]\frac{11*5}{5*3}[/tex]

= 55/15 → 11/3 (divided by 5) or 3⅔

I'm super confused about this

Answers

The answer should be n<-0.6 but I might be wrong
I think the answer is n<-0.6

Refer to the table shown. If the pattern continues what algebraic expression can be used to find the plants height for any month? What will be the plants height at 12 months?

Answers

Answer:Answer is 36 inches high.

Step-by-step explanation:

Each term is 3 times the number of months. So, the

expression is 3n.

3 3(12) n

Replace n with 12.

36

At the end of 12 months, the plant will be 36 inches high.

Every one month, the plant grows 3 inches.

If you multiply one month by 12, you get 12 months.

Now if the plant grows 3 inches each month, and you are trying to find it’s height at 12 months multiply 3 and 12.

3 x 12 = 36 inches, which is your answer.

Ella's family took a road trip to Niagara Falls. Ella slept through the last 14% of the trip. If Ella fell asleep after they had travelled 602 miles, what was the total length of the trip?


Help please I’ll give brainliest after I finish my homework

Answers

Answer:The length of the trip is 780 mile

Which set of numbers includes only integers?

A.Negative 5, negative 3 and one-fourth, 1, one-eighth
B.Negative 3, negative 2, 2, 3
C.Negative 6, negative 4, negative 2, negative one-half
D.One-half, two-thirds, StartFraction 6 Over 7 EndFraction, 0

Answers

Answer:

Gonggong answer munaman Yan ehh

B, integers basically mean whole numbers and B only contains whole numbers

Select the correct answer.
Each unit on the graph is equal to 1 block. How many blocks does Ben need to walk from his house to reach the supermarket?

A 4 blocks
B 5 blocks
C 7 blocks
D 9 blocks

Answers

9 blocks is your answer , if you count straight down is would be exactly 9 blocks

A student simplified the expression 6^2/36^2 as 1/3. Do you agree with this student?

Answers

Answer:

yes

Step-by-step explanation:

the math adds up to 1/3.

No

6^2= 36
36^2= 1296

36/1296 = 1/36

29 POINTS TO WHOEVER GETS THIS RIGHT

What is the value of the expression below when w=7 and x=5
3w + 10x

Answers

Answer:

3 × 7 = 21

10 × 5 = 50

21 + 50 = 71

Therefore, the answer is 71.

Answer:

41

Step-by-step explanation:

Help??? :/ .................................

Answers

Answer:

A

Step-by-step explanation:

Answer:

I think the answer is a.

What are numbers that cannot be divided by 5 without a remainder?

Answers

105, 275, 315, 420, 945, 760

Hope this works

105,275,315,420,945,760

These are homework questions I don't understand- can I please get help?

Answers

WARNING: ANSWER NOT NOT BE RIGHT! Answer: 1- A I really hope this helps! Im not good at this stuff, but I hope I did good! This not be right!

Answer:

1. a. draw 5 boxes with 7ś in them and x=7

2. number 7. x+x+x=9 that is A. and x+3=9 for B.

3. part a: x+9=16 draw a box with x+9=16 and x=7

3. part b: 4(x)=28 draw a bout that matches that and x=7

Step-by-step explanation:

1. the value of x is seven because 5x = 35 divide x on both sides is 7

2. number 7. x+x+x=9 that is A. and x+3=9 for B.

3. part a: x+9=16 draw a box with x+9=16 and x=7

3. part b: 4(x)=28 draw a bout that matches that and x=7

20 POINTS TO WHOEVER GETS THIS RIGHT <3

What is the value of the expression below when x=8 and y=4
9x-2y

Answers

Answer 64

Step-by-step explanation: if x is 8 you do 8 x 9 which is 72. Then you do 2 x 4 which is 8. So now you have 72 - 8 which is 64.

The answer is 64
Explanation

A restaurant customer left ​$1.40 as a tip. The tax was 5% and the tip was 20​% of the cost including tax. a. Which information is not needed to compute the bill after tax and​ tip? b. What was the total​ bill?

Answers

Answer:

Step-by-step explanation:

(10 x 100) x = 0.70. (10÷ 10) 100 ÷ 10. = 1/10 x = 0.70. X 0.70 x 10. X= 7.00

The total bill would be 7%

Select all ratios equivalent to 12:8 A. 15:10 B. 27:12 C. 14:2

Answers

Answer:

(12/8 = 1.5)

A) 15:10

Only A!!!!!! The others are incorrect

Select all ratios equivalent to 1:3 A. 9:21 B. 5:15 C. 4:12

Answers

all of the answers would be correct/ equivalent to 1:3
It’s B, and C because 1 x 9 is 9 and 9 x 3 is 27 which proves its incorrect.

And 1 x 5 is 5 and 3 x 5 is 15 so its correct.

Lastly, 1 x 4 is 4 and 3 x 4 is 12 so that proves that this is correct.




Hope this helps! :)

Help me find the answer to this please!!

Answers

Answer is y=6x

Explanation


When you have a graph, you can find the slope or coefficient next to x, by finding rise over run on the graph or using slope formula.

On the graph, from 0, 0, we go up or rise +6 and go right or run +1. Slope is 6/1 or 6.

Or, you have (0, 0) and (1, 6) as two definite points. Using slope formula
y2 - y1 over x2 - x1

6 - 0 over 1 - 0 = 6/1 or slope of 6.

Y=6x I think. Have a good day

Nine out of 45 students said that their favorite color was red. what percentage of students said that red was their favorite color?

Answers

So if theres 45 students in total, thats 100% of students, nine of those would be 20%

20% x 45 = equals 9 so ur answer is 9

Please help with this question..

Answers

Answer: I don’t know

Step-by-step explanation:

but I’m really broke

Answer:

(9 - v)^7 ?

I'm kinda confused

Marna thinks that about 35% of her mail is junk mail. She gets about twice as much regular mail as junk mail. Is she correct? Explain.

Answers

Answer: no

Step-by-step explanation:
70 percent and 35 is more than enough
The answer is not correct
Explanation:

4x-5(2x+1)=6x+1. how many solution will this have? is this right

Answers

Yea I’m pretty sure that right

Football team needs to gain 10 yards to score touchdown. On the first play the team gained 7 yards. on the second play they were penalized and lost 5 yards on the. third play they gained 2 yards. how many more yards must they gain on the forth play in order to score?

A. 2 yards
B. 4 yards
C. 6 yards
D. 8 yards

PLEASE HELP

Answers

Answer:

Step-by-step explanation:

The correct answer is 4 yards

how many solution does 4x-5(2x+1)=6x+1 have

Answers

The number of solution the equation 4x - 5 (2x + 1) = 6x + 1 have is one.

What is a solution?

Solutions are the values of an equation where the values are substituted in the variables of the equation and make the equality in the equation true.

We have,

4x - 5 (2x + 1) = 6x + 1

4x - 10x - 5 = 6x + 1

-6x - 5 = 6x + 1

-5 - 1 = 6x + 6x

-6 = 12x

x = -6/12

x = -1/2

This means,

The equation has one solution.

Thus,

The equation has one solution.

Learn more about solutions of equations here:

https://brainly.com/question/545403

#SPJ1

You have $30 to spend on in-app purchases for a game. Sets of extra lives cost $3 each, and bags of coins cost $5 each. You buy a total of 8 items in the game. How many sets of extra lives and bags of coins do you buy?

Answers

Answer: The answer is B which is 5 sets of Extra lives and 3 bags of coins

Step-by-step explanation:

1) Work out all the answers from a,b,c,d and b are exactly 30 dollars and 8 items.

2)I used trial and error due to the fact that there are 4 options.

Answer: hope this helps ♡

B) 5 sets of extra lives and 3 bags of coins

Step-by-step explanation:

Money = $30

A) 3 sets of extra lives = $9     5 bags of coins = $25      9+25 = 34  (34>30)

B) 5 sets of extra lives = $15     3 bags of coins = $15      15+15 = 30  (30=30)

Charlie bought pound of American cheese and pound of Swiss cheese. Josh bought pound of cheddar cheese and pound of jack cheese. Josh says that they bought the same amount of cheese. Is he correct? Explain.

Answers

Answer: It is not possible to determine whether Josh is correct without more information. In order to determine whether they bought the same amount of cheese, it would be necessary to know the weight of the cheeses that Charlie and Josh bought. If the weight of the cheeses that Josh bought is equal to the weight of the cheeses that Charlie bought, then Josh is correct and they did buy the same amount of cheese. However, if the weight of the cheeses that Josh bought is not equal to the weight of the cheeses that Charlie bought, then Josh is incorrect, and they did not buy the same amount of cheese.

Step-by-step explanation: It's hard to say because you would need the weight of the cheese.

Hallie and Mattie donated blue jeans to the clothing drive. Hallie donated 4 pairs of blue jeans. Mattie donated 6 pairs of blue jeans. Write a ratio to represent the relationship between Hallie's donation of jeans and Mattie's donation of jeans.

Answers

Answer:

2:3

Step-by-step explanation:

Hallie's Donation : Mattie's Donation = 4:6

simplified, it is 2:3

2:3

If you do 4/6 you’ll simplify to get 2/3.
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