For this case we have the following system of equations:
We must solve the system by the method of elimination. To do this we multiply the second equation by -3, then:
We add both equations:
We find the value of "x":
Thus, the solution of the system is:
We verify:
Is fulfilled!
Is fulfilled!
Answer:
Answer:
150cm^2
Step-by-step explanation:
Volume of the cube=125cm^3
Side^3=125cm^3
Side =5cm
So the total surface area =6×side^2
=6×5×5
= 150cm^2
So the total surface area is150cm^2
" 24 percent " means " 0.24 "
" of " almost always means " times "
So " 24 percent of 145 " means " 0.24 x 145 ".
You can do that easily with a pencil or a calculator.
0.24 x 145 = 36.25 .
Answer:
Step-by-step explanation:
Answer:
6.48
Step-by-step explanation:
she uses 1.065 every day for 8 days. 1.065 × 8 is 8.52. so that's how much she used in 8 days. theres 15 kilograms in the bag. 15(the original bag) - 8.52(how much was used) leaves you with the answer 6.48