MATHEMATICS MIDDLE SCHOOL

Which numbers belong to the range of the relation {(0, –1), (3, 6), (–2, –1), (–4, –4)}?Choose all answers that are correct.

A.
–4

B.
–2

C.
–1

D.
0

Answers

Answer 1
Answer: The range are y's.

y\in\{-4,-1,6\} \Rightarrow A,C
Answer 2
Answer: The  answers are A and C my man. 

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Mr. Walker was hiking across Massachusetts. He has three days to cover 70 miles. On the first day, he walked 6 hours at a speed of 4 mph. On the second day he walked the same number of hours, but his speed was only 3 mph. On the third day, he walked 8 hours to cover the remaining distance. What was his speed on the third day?

Answers

so 6 hours at 4 miles per hour
4 miles per hour means 4 mieles in one hour
6 hours
distance=time times (distance pers unit of time)
distance=6 times 4=24

second day
same number of hours=6
speed=3

distance=time times (distance per units of time)
distance=6 times 3=18

so we add 1 and 2 days together
24+18=42
so he has covered 42 mles
he eed to cover 70
70=42+rest
subtract 42
28=rest

so he traveled 28 miles on third day
in 8 hours
sppeed=distance divided by time
time=8
distance=28
28/8=14/4=7/2=3 and 1/2 miles per hour=3.5 miles per hour

answer is 3.5 miles per hour

120 is what percent of 360 explain plz

Answers

120 = x percent of 360

120 = x * 360

120/360 = x

x = .33 repeating

x = 33.33% (repeating)
120 = 360x
x=120/360
x=⅓
convert to decimal
x=.33333333....
convert to percent
x=33.3333333...%

6 sisters share 4 sandwiches equally what's the fraction

Answers

If you would like to know how many sandwiches will each sister get, you can calculate this using the following steps:

6 sisters ... 4 sandwiches
1 girl ... x sandwiches = ?

6 * x = 4 * 1
6 * x = 4      /6
x = 4/6
x = 2/3

The correct result would be 2/3 of a sandwich.
the answer is 2/3 hope i helped

If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.

Answers

Yes it will because it is going up the exact same amount as it is going down

13) -4= -b -1/3b and -23/3= 1/2a + 5/3a

Answers

-4=-1b-(1/3)b

-4=-(4/3)b

-4/-(4/3)=b

b=3

-------------------------------

(1/2)3+(5/3)2

3/6+10/6=13/6

-23/3=13/6a

(-23/3)/(13/6)=a

a=-46/13

A trap for insects is in the shape of triangular prism. The area of the base is 3.5 inches and the height of the prism is 5 inches. What is the volume of this trap?

Answers

The volume of triangular prism V = A * h.
So, V = 3.5*5 = 17.5 cubic inches
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I’m confused.. please help