A bag of marbles has pink, blue, and green marbles at ratio of pink:blue:green=4:2:1. There are 72 blue marbles in a bag. how many pink marbles are in the bag?

There are 144 pink marbles in the bag.

Step-by-step explanation:

The ratio 4:2:1 means that for every 2 blue marbles there are 4 pink and 1 green.

This said,

We have 72 blue marbles in the bag, the number of pink marbles is exactly twice the amount (4 : 2), so 72 (2) = 144

Another way to find the answer is looking for the half of the blue marbles which is 36 and then multiply it by 4 (pink marbles) and your answer will be also 144.

Hope this help!

x = 25/2304

step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3