MATHEMATICS MIDDLE SCHOOL

Which numbers belong to the range of the relation {(–2, 0), (1, 3), (–2, 3), (1, 0)}?Choose all answers that are correct.



A.


–2


B.


0


C.


1


D.


3

Answers

Answer 1
Answer: Range is the y value in the ordered pair.

So the y coordinates in the ordered pairs would be 0 and 3.

Answer: B and D

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Solve the following equality. 7t+15>3t-13
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Find three different ratios that are equivalent to 7:3

Answers

Answer:

14 : 6, 21 : 9 and 28 : 12

Step-by-step explanation:

Given ratio,

7 : 3

Since, when we multiply both numerator and denominator by a same number then we get an equivalent fraction,

That is,

(7)/(3)=(7* 2)/(3* 2)=(14)/(6)

(7)/(3)=(7* 3)/(3* 3)=(21)/(9)

(7)/(3)=(7* 4)/(3* 4)=(28)/(12)

Hence, the different ratios that are equivalent to 7:3 are,

14 : 6, 21 : 9 and 28 : 12

Answer:

14:6

21:9

28:12

Step-by-step explanation:

Given the initial ratio of 7:3, you can find equivalent ratios by multiplying the two numbers by the same factor:

7 x 2 = 14

3 x 2 = 6

14:6

7 x 3 = 21

3 x 3 = 9

21:9

7 x 4 = 28

3 x 4  = 12

28:12

Mixing 4 ml of red paint and 15 ml yellow paint makes orange paint. How much red would be needed if you use 100 ml of yellow paint? Please show work

Answers

(4ml)/(15ml)=(xml)/(100ml)\n\ncross\ multiply\n\n15x=4*100\n\n15x=400\ \ \ \ |divide\ both\ sides\ by\ 15\n\nx=(400)/(15)\ \ \ \ \ |divide\ a\ numerator\ and\ a\ denominator\ by\ 5\n\nx=(80)/(3)\n\nx=26(2)/(3)\ (ml)\n\nAnswer:26(2)/(3)\ ml\ of\ red\ paint.

Ben is 4 times as old as ishaan and is also 6 years older than ishaan how old is ishaan ?

Answers

Answer: Undefined.

Step-by-step explanation: There is only two equations to represent this question. Since we are trying to get Ishaan's age, we have to know Ben's age in order to know his age. However, Ben's age is represented by Ben=4x+6, we don't know his age exactly, therefore we can't determine Ishaan's age. Ishaan's equation would be Ishaan= age-6 divided by 4.  Therefore, there is little to no information to determine his real age.

There isn't enough information to find their ages.

tim makes 80 gallons of paint by mixing 48 gallons of green paint with 32 gallons of blue paint what part of every gallon is from green paint.

Answers

48 ÷ 80 = .6

60/100 = 6/10 = 3/5

3/5 of every gallon is green

Desxeibe another way to find area

Answers

Area equals base times height or length times width.

Jamel watched his older brother Robert lift weights. The bar alone had a mass of 20 kg. On the bar he had tow 11.4 kg weights, two 4.5 kg weights , and four 450 g weights. What mass was Robert lifting ?

Answers

all you do is add them all together...
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