MATHEMATICS MIDDLE SCHOOL

Which functions have a positive rate of change and which have a negative rate of change?Column A Column B
1. 2x – 3y = 9 A. positive
B. negative
2. y = −4x + 5
3. x y
−1 −5
1 1
3 7
4. x y
1 −2
2 −6
3 −10

Answers

Answer 1
Answer: Ok I just did a test on this and my teacher taught me how to do it, For problem like number 3 with the table of numbers, You take the first to sets like -1,-5 and 1,1....Then   you do 1 - (-5) =  your answer then 1 - (-1) = your answer than you get 6 and 2  ...you want to divided those numbers 6/2 = 3 and that is positive so #3 is positive.                                                                                                                       Same thing for #4  1,-2 and 2,-6       -6 - (-2) = x      2 - 1 = x  x/x  I want you to solve #4 for yourself        #2 is already done  y = -4x + 5  just take the -4 and -4 is negative so #2 is negative.   Then #1  I have a hard time with those but I think it's positive

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How far can your brother get if he can travel at 2.5 m/s and in 5 seconds you will discover that his squirt gun had run out of paint

Answers

Answer:

12.5 meters

Step-by-step explanation:

2.5 m/s for 5 seconds is

2.5*5=12.5

12.5 m after 5 seconds

Write an absolute value inequality that has 3 and -5 as two of its solutions

Answers

absolute value makes all things inside positive (make result positive)
so one example is
|x+1|=4
so if you had 3 in it woul dyhave
|3+1|=4
|4|=4
4=4
true

if -5
|-5+1|=4
|-4|=4
4=4
treu

Round this number to the nearest 100,000. 5,370,288

Answers

Round this number to the nearest 100,000. 5,370,288

Answer:

5,400,000
The answer is 5,400,000

Haru needs to be at school at 8:15.If it takes him 20 minutes to walk to school,15 minutes to eat breakfast,and 12 minutes to get dressed and brush his hair,what time should he get up?

Answers

Answer:

7:28

Step-by-step explanation:

If you want to estimate, 7:30.

20 + 15 + 12= 47 minutes

If it takes him 47 minutes to get ready, then 47 minutes away from 8:15 is 7:28.

Henry and Samual volunteer at the daycare center and he worked three hours for every two hours Samual works if the two boys together work 20 hours one month how many hours does henry work

Answers

Sorry if this isn't clear It's a ratio question. Henry does 3 hrs for every one of Samuel's 2hrs, the ratio is 3:2 The total number of parts is 5 and to work out one part, divide 20 by 5 =4 So if Henry does 3hrs for Sam's 2hrs, he does 4 x 3 to get his part of the total 20hrs 4 x 3 = 12 And Sam does 2hrs, he does 4 x 2 = 8 So Henry does 12hrs a month

Multiply with regrouping 73x28

Answers

72x28
the first digit 2 in 72 times the first digit 8 in 28 equal 16
leave the 6 and carry the 1 over 7
8 times 7 equal 56 and so far your first answer is 566 your answer is

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