Mathematics Middle School

Which of the following pairs of expressions are equivalent to each other? Select the pairs of expressions that are equivalent to each other.
Hint: select more than one answer

3z + 2z and 5z

(7x - 7x) -y and 0

8.3 + 7.2 − 3.6 and 10.8

−5 (4 − 4) and 0

6 ( − 3) and 6 − 18

Answers

Answer 1
I am pretty sure the answer is 2 and 4
7x-7x=0 and (0)-y=0 therefore 0=0

-5(4-4) -20+ 20=0 therefore 0=0

Related Questions

#3-60 Simplify the following expressions.

Answers

Answer:

The solution is:

a. -18

b. -18

c. 24

d. 0

e. -4

4. 4

Step-by-step explanation:

Before we get into the solution, we remember the formula first, namely:

Addition

• (-) + (-) = (-)

• (+) + (+) = (+)

Subtraction

• (+) - (+) = can (-) and (+)

• (+) - (-) = (+)

Multiplication

• (-) x (-) = (+)

• (+) x (-) = (-)

Division

• (-) : (-) = (+)

• (+) : (-) = (-)

Solution:

a. 6(-3) = -18 ((+) × (-) = (-))

b. -6(3) = -18 ((-) × (+) = (-))

c. (-8)(-3) = 24 ((-) × (-) = (+))

d. -8(0) = 0 (whatever the number, if multiplied by 0 the result is still 0)

e. -20÷5 = -4 ((-) ÷ (+) = (-))

f. -36÷(-9) = 4 ((-) ÷ (-) = (+))

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

0.55

Step-by-step explanation:

So according to the problem b=2.2

Then you will need to divide

2.2 divided by 4 = ?

The answer will be 0.55

Juan hires an electrician.
Juan pays a one-time fee of $30.
Juan also pays $45 for each hour the electrician works.
A. Write a function that can be used to find the total charge, c, Juan will pay when the electrician works, h, hours.
B. How much will Juan pay if it takes the electrician 6 1/2 hours to complete the job
1. Summarize the given situation in your own words. (What do you notice)
2. Explain: What is the essential information you can use to find the solution?
3. Find the solution.
4. Justify your answer is correct
Please help ASAP

Answers

Yur answer is 35.39y
35.39y I got it from the person above

Heeeeeeelppppppppppp

Answers

Step-by-step explanation:

I'll help you darling

a. B

b. 2.6 + x = 10.4

c. x = 10.4 - 2.6

= 7.8

d. This is to say before mia added the 2.6 litres of what the pitcher contained 7.8 litres of water already

An electronics company refurbishes ink-jet printers. The table shows the revenue produced for the number of units sold.
u (units sold How much revenue will be produced for 45 units? A $1,550 B $2,000 C $15,500 D $20,000. Explain and show your work.


the table:
u(units) 30, 32,34,36
R($000) 8,9,10,11

Answers

Answer:

The answer is C. $15,5k (Please mark me as the Brainliest

Step-by-step explanation:

1 unit is $500. Every $1000 is 2 units. Counting from 36 units ($11000) to 46 units, 11000 (36), 12000 (38), 13000 (40), 14000 (42), 15000 (44), 16000 (46). Since 45 is an odd number and 1 unit is $500, we take $15000 (44) and add $500 for 1 unit.

final question ((((((((

Answers

Answer:

I think its 25, thats what i got when i did the math But double check with someone else just in case

It’s 25 I’m pretty sure hope this helps

help asap!!!!!!!!!!!!!!!!!​

Answers

The answer is 260 hope that helps

Answer:

she's right the girl if you need to confirm

A circular garden has a radius of 3 meters. what is the area of the garden? write your answer by using π.show your work

how do you find an area of this a circle? plz help me

Answers

formula- area= pi x radius squared( r x r)

3 x 3 = 9 x 3.14 ( pi ) = 28.26

AREA/ANSWER: 28.26
the equation to find the area of a circle is πr^2

so, you do π multipled by the radius and then square it

π x 3 ^2

this equals 28.27

Find the function value: f(0.5) if f(x) = 8x - 12

Answers

x = 1.6

f = 0.5

0.5(x) = 8x -12

0.5x= 8x -12

subtract 8x from both sides

-7.5x = -12x

Divide by -7.5x, both sides

X=1.6

Can someone help me find the Slope to these to pleaseeee?

Answers

Answer:

Remember the slope formula:

m= y2-y1/x2-x1

11. (-1,3) (3,3)

= 3-3/3--1

= 0/4

m = 0

12. (1,3) (1, -2)

= -2-3/1-1

= -5/0

= undefined

For the future, know that the slope of horizontal lines is always zero and the slope of vertical lines is always undefined.

i would love to help but the pictures are supper blury so sorry:(

There are 21 girls and 12 boys in the chorus class. About what percentage of the boys is the girls in the class?

Answers

Answer:

57%  

Step-by-step explanation:

21 girls

12 boys

12/21 = 57%

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answer:

there are 33% boys and 66% girls

Step-by-step explanation:

that is the only way you could divide that up

Samuel buys office supplies for his home business. The office supplies cost $175.79before taxes. The sales tax rate is 8.25%.What is the amount of sales tax Samuel will pay?

Answers

$190.29 because $175.79 x 1.0825 is $190.29

Answer:

190.29

Step-by-step explanation:

Antonio needs 3.5 liters of water for an experiment. He has 1.375 liters. How much more water does Antonio need?

Answers

Answer:

Antonio needs 2.125 more

Step-by-step explanation:

First, you subtract 3.5 (total) - 1.375 ( What her has already). Then you will get the answer (2.125).

Answer:

Antonio needs 2.125 more

Step-by-step explanation:

First, you subtract 3.5 (total) - 1.375 ( What her has already). Then you will get the answer (2.125).

I really need help with this, just select all of the options that apply to the table please!!!!

Answers

i think just 1 and 2

Answer: 1 and 2 i believe hope it helps sorry if im wrong

what is 6n + 7 - 2n - 14 = 5n + 1

Answers

Answer:

-7 is what i got

Step-by-step explanation:

combine like terms.. 6n -2n= 4n

7-14= -7

4n-7= 5n+1

+1 becomes -1

4n- -6=5n

-4n on both sides

-6= 1n

1-1 on both sides to cancel out

n= -7

N = -8

6n-2n-5n=1+14-7
-1n=8
n=-8

What value of Y makes the equation true ?

Answers

Answer:

y = -5/2 or -2.5

Step-by-step explanation:

3y + 4 = -y - 6

add y to both sides

4y + 4 = -6

subtract 4 from both sides

4y + 4 - 4 = - 6 - 4

4y = -6 - 4

4y = -10

divide both sides by 4

4y/4 = -10/4

y = -10/4

y = -5/2 or -2.5

pls help ASAP
WIll mark brainliest

Answers

Answer:

the area is 128.549 cm squared

Step-by-step explanation:

just find the area of each shape and add

i'll be back with perimeter

I think it’s 128.549

210=157-w

solve for w

Answers

W=367 because 210+157 is 367 so 367 minus 157 would be 210 so I think w=367. The equation is just written backwards

Answer:

-53=w

Step-by-step explanation:

210=157-w

Subtract 157 from both sides

53=-w

-53=w

what are the rules for multiplying negative integers​

Answers

Answer:

Negative time a negative equals a positive!

Step-by-step explanation:

When you multiply two negative numbers or two positive numbers then the product is always positive. The same also goes for dividing negative integers.

negative + negative= positive
negative + positive = negative
positive + positive = negative

Please help!
How much interest (in dollars) will Alex receive after 2 years if he deposited $14,000 in the bank at 3.5% annual interest rate?

Davit received $870 as an interest for money invested in Foreign Exchange Market three years ago. How much money did he invest, if the annual interest was 4%.

For starting a new business, Arthur borrowed $23000 and calculated $3450 interest for five years. What annual interest was considered?

Answers

Answer:

interest=$980

principal=$7250

Rate=3%

10 points!! plzzzzzzz helpppp :(
find the letters ( K,K,T )

Answers

Answer:

dude u lie it says 5 points

Step-by-step explanation:

Answer:

1) k=90

2) k=135

3) s= 115 t=30 r=35

helppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

0.008

and the way you do it is multiply 8×10 then you get 80 move the decimal to the left because it negative and that your answer

Please help me my Math Grade Is a D- I'm struggling.

Answers

The Answer is 128......

Plz help ya' girl out
Giving brainiest

Answers

Answer: find the highest number they both divided by that should give you the answer

Step-by-step explanation:

Please help! If the length of the shorter leg of a right triangle is 5 cm and the length of
the hypotenuse is 8 cm, find the length of the longer leg.

Answers

Answer:

i think d its the longest of the options

Step-by-step explanation:

Answer:

D because I took the test

Step-by-step explanation:

A carpet layer is given a roll of carpet which has already been cut for a 12-ft. wall. The wall measures 1.5 in. on a drawing. The length of the room is 6 in. on the drawing. How far, in feet, will he cut the length of the carpet?

A.48
B.4
C.72
D.18

Answers

Answer:

It is 48

Step-by-step explanation:

5 1/4 divided by 7/8 please show the work I will mark whoever shows the work correctly brainliest, please attach an image or do it on the screen :)

Answers

Answer:

6

Step-by-step explanation:

convert the mixed number to a improper fraction

5/1/4 = 21/4

5×4 =20 + 1 = 21 and keep the 4 the same so u ha e 21/4 /7/8

flip the 7/8 to get 8/7

then divided

21 and 7 divided each other which is 3 and keep the 4

which Is 3/4 ×8

4 and 8 divided getting you 2

and u are left with 3

3x2 = 6

PLEASE HELP I WILL MARK BRAINLIEST! 4.)A fruit basket is made with apples and oranges. The ratio of apples to oranges is 2 to 3. If there are 15 oranges in the basket then how many apples are there?

Answers

I believe it’s 10 because if apples are 2 and oranges are 3. 15 divided by 3= 5 therefore you can simply multiply 2x5=10

Find the angle measures. Justify your responses. Given: a||b, m1=71º Find m5, m8

PLEASE NEED BEFORE SUNDAY THE 20TH ASAP! BRAINLIEST TO WHOEVER GETS CORRECT ANSWER FIRST

Answers

I provided the answer in the picture

Question 4
Andrew buys 8 pounds of apples for $11.60. He wants to know and use the unit rate of the cost per pound.

True or False: Two pounds of apples costs more than $3.

1Points
A
True

B
False

Answers

b . false becauae first you divided 11.60 divided by 8 =1.45 then 1.45x2=2.9
B. It’s false so good luck I hope you got it
Other Questions
Genocides are only committed against racial groups.TRUE or FALSE What is the reason for the increased number of drug resistant bacteria being found in hospitals? whats 17+-44 describe how you got that answer Given f(x)=2x+7, which of the following is the value of x when f(x)=13? Read and match each sentence with the correct image it belongs to. (4 points)a. Tengo 18 aos.b. Tengo prisaC. Tengo sed.d. Tengo miedo1. little boy drinking water out of a water fountain2. man in a suit with a brief case running 3. a girl nervous biting her nails4. friends posing for a pic with a birthday cake Which linear function is directly proportional?A. y=3x2+2B. y=5x5C. y=2x+3D. y=6x Which type of mutation does not change the amino acids produced? The two trapezoids shown below are similar . What is the length of x? what is the main difference between the limited and omniscient third person narrative point of view PLZZZ HELP Use the maps to answer the following question:Which modern-day countries mark the eastern and western borders of Alexander's empire? Turkey, China Turkey, Russia Greece, India Greece, Afghanistan Plz, Help me with this question!!!! Protons + Neutrons = What is the value of x in the equation?Two-thirds (x + 6) = negative 18 help with math? heres the question. -answer options:8253 8. Adolf Hitler, and other dictators like him, are examples ofgovernmentsO DemocraticO ConfederationO FederalAutocratic. J9. What is the major difference between Presidential and Parliamentary democracies?A. Only a presidential system allows voters to elect representatives.B. Only a parliamentary system has a constitution.C. presidential system features a chief executive elected directly by the people.D. None of the above. WILL GIVE BRAINLIEST PLS HELP !! Which key detail supports the central idea of nullification?A tariff is a tax on imported goods.John C. Calhoun was secretary of state.Congress passed a high tariff on imported goods.John C. Calhoun thought the tariff hurt the South. Good Morning everyone! Question for today is: If you're a big Star Wars what is your favorite character from Clone Wars and Star Wars Rebels? And other awesome Star Wars movies!My favorite character from Star Wars Clone Wars and Star Wars Rebels is Ahsoka Tano, Bo-Katan, and Ezra. And from the orignial trilogy my favorite characters are Padme Amidala, Qui-Gon Jinn, and C-3P0. Cytotoxic T cells recognize and kill host cells infected by viruses. They recognize these cells by the foreign antigen displayed on the host cells:_________. A. MHC I molecules B. MHCII molecules C. toll like receptors 3. Who led the successful colonial raid on Fort Ticonderoga, and how manycannon eventually were taken to Boston, to help keep the British underguard? *Benedict Arnold; 59 cannonEthan Allen, 59 cannonBenedict Arnold; 100 cannonElman Allen, 100 cannon