MATHEMATICS MIDDLE SCHOOL

If Bob jumps 15 additional times, the total number of his jumps will be 3 times what it was 3 jumps ago. Bob has jumped _?_ times all together. A) 12
B) 18
C) 21
D) 24

Answers

Answer 1
Answer:

The answer is twelve  because three minus fifteen is twelve so the answer is twelve .


Answer 2
Answer: 15-1= 12 jumps

Fifteen minus one equals twelve jumps.

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Markus receives dollar bills from his grandfathet for one week.On the first day he received $1; on the second day he received $2, on third day he received $4, and on the foruth day he received $8. If this continuse , how much money will markus have by the end of the week?

Answers

Marcus, oh boy I wish my grandpa did this with me, but Marcus would end the week with $167.

PLEASE CHECK MY ANSWERS (PART 1)

Answers

You're smart! You don't need us checking your work. They are correct anyway 
All of you answers are correct. Great job! But it is always good to check answers!

How to divide 25.0 divided by 29.4

Answers

25.0divided by 29.4= 0.8503401 I hope this helps :)

I really need the answers for these I don't understand this

Answers

i tryed my best to figure out what all of the numbers were. if i got any wrong then please tell me and i will put the right answer in the comments.

1) 3/5= 5/x   (cross multiply)
     3x=5(5)
     3x=25
       x= 25/3 -or- 8.33

2) 2/4=x/12   (cross multiply)
 2(12)=4x
     24=4x
       6=x
3) 10/x=5/9   (cross multiply)
   10(9)=5x
       90=5x
       18=x
4) 5/5=x/18   (cross multiply)
 5(18)=18x
     90=18x
       5=x

A line contains (4,2) and (0,1) what is the equation of the line

Answers

First we need to find the slope of the line.

Slope = (y_2-y_1)/(x_2-x_1) = (2 - 1)/(4-0) = (1)/(4)

Our equation of the line will be in the form of y = mx + b, where m is the slope and b is the y-intercept.

We have found the slope. All we need to find is the y-intercept. Luckily, they gave us the y-intercept!

The y-intercept can be found when x = 0. And one point they gave us is (0,1). That means the y-intercept is 1.

The equation of the line is 

y = (1)/(4)x + 1
When you need the equation of a line, you need to find the slope (m) and the y-intercept (b). the slope is fairly easy to find, we simply find the second y- the first y divided by the difference of the second x and the first x. this will look like
(1-2)/(0-4)= 1/4. that is our slope. next we need to find the y-intercept, that is when x=0. for this problem we are actually given it with the second point (0,1) that means our y-intercept is 1. now we have the everything we need for the equation y=mx+b. we know that m=1/4 and b=1, so we can plug that in and get y=1/4x+1

4. Frank bought lunch for $5.60 at a diner. He spent $2.00 to ride the bus to the mall and back, and spent $6.50 while he was at the mall. His friend Bill paid him back $5.00 that he had borrowed last week. If Frank arrived at home with $10.50 in his pocket, how much did he have when he left home that morning?

Answers

Frank had $19.60 dollars when he left home that morning. If you add the $5.60, $2.00, and $6.50 that he spent while he was away from home, because he had that money when he left, you get a total of $24.60. You should then subtract the $5.00 his friend gave him, since he didn't have that when he left home. This brings you to a total of $19.60, which is the amount Frank left home with.
he had $19.60
u take $5.00 of the amount he had at home then u add the rest
so 5.50+2.00+5.60+6.50=19.60
sorry if im not right
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