Triangle similarity what is the value of x?

To solve this you can make a proportion where the matching sides will correspond to each other. It should look something like this:

Now you must cross multiply

10*42 = 15*x

420= 15x

To isolate x divide 15 to both sides

420/15 = 15x/15

28 = x

Hope this helped!

~Just a girl in love with Shawn Mendes

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e