Question

Which ratio forms a proportion with 9/15 ?
A. 3/6
B. 2/3
C. 12/30
D. 6/10

Answer 1

9/15=3/5
6/10=3/5....hence they are in proportion

Answer 2

notice that you can simplify 9/15 by dividing top and bottom by 3

Answer 3

Which proportion has cross products of 5 × 24 and 8 × 15?
A. 5/8=15/24
B. 5/24= 8/15
C. 8/24/= 15/5
D. 15/8= 5/24

Answer 4

cross product means multiply the top of one side times the bottom of the other side

Answer 5

is it C?

Answer 6

in C, 8 is on the top on the left. you multiply it times the bottom on the right side. 5 is on the bottom on the right. that means 8*5 is that what you want?

Answer 7

im not sure

Answer 8

@pkjha3105 do you know what it is?

Answer 9

look at each choice: write down the top of left side times the bottom of the right side
can you do that?

then write down the bottom of the left side times the top of the right side.
can you do that?

Answer 10

75 and 192

Answer 11

don't multiply them out, just write them down

example
A. 5/8=15/24

top left times bottom right --> 5*24
bottom left times top right --> 8*15

Is that what you want?
Which proportion has cross products of 5 × 24 and 8 × 15?

Answer 12

yes.

Answer 13

Here is choice B
B. 5/24= 8/15
top left times bottom right --> 5*15
bottom left times top right ---> 24*8
is that what you want? NO

Answer 14

i am not getting this.

Answer 15

You have to answer the question
Which proportion has cross products of 5 × 24 and 8 × 15?
A. 5/8=15/24

choice A gives you