9 A container had a mass of 1.26 kg when it was completely filled with sand. It had a mass of 1.05 kg when it was filled with sand. Find the mass of the container.​

0.7 kg

Step-by-step explanation:

x = mass of the empty container (just the container alone)

y = mass of the sand in the full container.

x + y = 1.26 kg

x + 5/8 × y = 1.05 kg

=>

x = 1.26 - y

(1.26 - y) + 5y/8 = 1.05

8×(1.26 -y) + 5y = 8×1.05

8×1.26 - 8y + 5y = 8×1.05

10.08 - 3y = 8.4

3y = 1.68

y = 0.56 kg

x = 1.26 - 0.56 = 0.7 kg

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

lo.lll

step-by-step explanation: