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V125BC [204]
3 years ago
7

There are 9 new books and 4 used books on a shelf.

Mathematics
2 answers:
barxatty [35]3 years ago
8 0
12:9 and 4:12 , I'm pretty sure that should be correct
Nataly [62]3 years ago
7 0
The CORRECT answer is:
a)13:9
b)4:13
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Russell runs 9/10 miles in 5 minutes. how many miles does he run in one minute
Andrej [43]
Don't you divide 9/10 and 5 

9/10 divided by 5/1 
9/10 * 1/5 = 9/50 

so i think 9/50 is your answer lol
3 0
3 years ago
Help me please I do not understand
Readme [11.4K]
The coefficient is the number that is beside the variable so that answer is 18 . The constant is the number that has no variable so that one is 36.
6 0
4 years ago
How do you solve by elimination/linear combination. <br>a. 3x+4y=17 <br> 5x-4y=7
r-ruslan [8.4K]
8x = 24
x = 3

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5 0
4 years ago
.....................................
kumpel [21]

Answer:

Look below.

Hopefully they're right.

Step-by-step explanation:

1. m=3/1 b=6

2. m=5/6 b=-5

3. m=-3/4 b=1

8 0
3 years ago
9. Jennifer is now 3 years older than Peter. If, in 12 years, the sum of their ages will be 61, how
zaharov [31]

Answer:

  20

Step-by-step explanation:

In 12 years, the sum of their ages will be 24 more than it is now. The sum of their ages now is 61-24 = 37.

If Jennifer is 3 years older than Peter, we have ...

  j + (j -3) = 37

  2j = 40 . . . . . . add 3

  j = 20 . . . . . . . divide by 2

Jennifer is now 20 years old.

_____

Peter is now 17 years old. In 12 years, they will be 29 and 32, so their ages will sum to 61.

7 0
3 years ago
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