MATHEMATICS MIDDLE SCHOOL

Which numbers belong to the range of the revolution {(4,-1),(-7,2),(1,2),(2,1)}Choose all the that are correct
A 2
B 1
C -1
D -7
Which numbers belong to the domain of the revolution {(8,-5),(4,2),(4,8),(-7,6)}

A 4.
B 2
C -5
D -7

Answers

Answer 1
Answer: 1.
The range are y's. The y's in {(4,-1),(-7,2),(1,2),(2,1)} are -1,1,2 ⇒ A,B,C

2.
The domain are x's. The x's in {(4,-1),(-7,2),(1,2),(2,1)} are -7,1,2,4 ⇒ A,B,D

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55% of what number is 77?
Which ratios are equal to each other? 1:16 and 2:8 or 2:32 and 4:8 or 1:64 and 4:16 or 1:16 and 4:64
A newborn kitten weighs 3 ounces at birth. After four weeks, it weighs 13 ounces. Which of the following is true?A. The kitten's age and weight are not in a proportional relationship because the kitten does not weigh zero ounces at birth.B. The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases by 2.5 ounces every week.C. The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases over time.D. The kitten's age and weight are not in a proportional relationship because the difference in the weight of the kitten after four weeks is 10 ounces.Reset Submit
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Last year 3684 people went to a music festival. The number of people who went to the festival this year was 2/3of last year’s figure. How many people went to the festival this year? A 1228 B 2442 C. 2456 D. 5526

can someone explain to me how to use "squared"? I do 2+2 and its four. but when I do 3+3 and I get 6, my brother tells me that's not squared. can you help me out?

Answers

Yes. You've come to the right place. I can help. To "square" a number means to MULTIPLY it by itself . . . NOT add it to itself. '2' is the ONLY number that gives the same result both ways. The square of 3 is 3 times 3 = 9 . The square of 6 is (6 times 6) = 36.

Gerry has two different part-time jobs, and he had work 20 hours per week at each job. He earns $8 per hour at one job. Which expression represents how much Gerry earned last week if he earns d dollars per hour at this other job?A- 20+20d
B- 160+ 20d
C- 40+ d
D- 160+ 8d
                                PLZZZZZZ ANSWER THX!!!!!!

Answers

The correct answer for the question that is being presented above is this one: "Last week's earnings = 40d."

Gerry has two different part-time jobs, and he had work 20 hours per week at each job. He earns $8 per hour at one job. 

Last week's earnings = 20d + 20d
Last week's earnings = 40d.

20d+20Answer:

Step-by-step explanation:

Olivia has 109 pennies. Liza has 2,457 dimes. Chris has 8,078 quarters. How much money in total do they have altogether

Answers

109*0.01+2457*0.1+8078*0.25=2266.29 dollars

Coach Wilson ordered T-shirts for the basketball team from two different T-shirt suppliers. One supplier charged $16 for each shirt, as well as 5% for shipping. The other supplier charged $18 for each shirt, plus 7% for shipping.Part A

Coach Wilson ordered the same number of shirts from each supplier. Write an equation to find the shipping charges he paid to each supplier.

Part B

The first supplier gave Coach Wilson a discount of 10% off of his order total. The second supplier gave him a discount of $20 off of his order total. Write an equation to find the total cost, T, of the shirts.

Part C

Coach Wilson ordered 15 T-shirts from each supplier. How much did he pay?

Answers

Part A:
# of shirts bought in total (T)times cost of each shirt (E) =X. X times .5 (same as 5%)= shipping charge (S) =
first: T*E=X. second: X*.5=S

Part B:
vendor 1:
# of shirts bought (A) times cost of each shirt (B) plus shipping charge(C) times 10%=T. A*B+C*.10=T

vendor 2:
# of shirts bought (A) times cost of each shirt (B) plus shipping charge (C) minus $20= T. A*B+C-20=T

Part C:

vendor 1:
15*16=240 (total # of shirts * cost of ea.)
240+8= 248 (1st answer + $8 of shipping)
248*.10= 24.80 (2nd answer * 10% discount)
248-24.80= [223.20] (2nd answer - 10%)
vendor 1 total cost: 223.20.


vendor 2:
15*18=270 (# of shirt bought * cost of ea.)
270+12.60=280.60 (answr 1 + shipping cost)
280.60-20=[260.60](answr 2 -$20discount)
vendor 2 total cost: 260.60.

How do you answer $9 ; 10%

Answers

You can calculate percentages by first finding what 10% of a value is and then what 5 or 1% is. From there you can multiply to find multiples and then add to get the required percentage.

What is the value of x?

Answers

There are two things you can do.
Firstly, you can add 4 plus 7 and then 90 degrees divided by 11.
Or, multiply 4 times 7 and then 90 divided 28. 
I do not know if this was helpful.
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