A scientist needs 150mL of a 15% acid solution for an experiment. The lab has available a 10% and a 25% solution. How many milliliters of the 10% and how many milliliters of the 25% solutions should the scientist mix to make the 15% solution?

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

oof cheaters cheat because they’re lazy that’s why i cheat xd

: )

step-by-step explanation: