2/3x-6=-10
*3 *3 Multiply both sides by 3
2x-18=-30
+18 +18 Add 18 to both sides
2x=-12
_____
2 Divide both sides by 2
x=-6 The number = -6
Answer:
100°
Step-by-step explanation:
I just took the test
What we know:
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 7 liters of natural oil for every 5 liters of synthetic oil.
What we need to find:
If 355 liters of synthetic oil are used, how many liters of petrolyn oil will be made?
Set up a proportion to find how much natural oil is used.
7L natural oil/5L synthetic oil = x/355 synthetic oil where x=natural oil
7/5=x/355
(5)(x)=(7)(355) cross multiplied
5x=2485 simplified
5/5x=2485/5 multiplicative inverse
x=497L
Now, add both synthetic oil and natural oil to find amount of petrolyn oil.
355 L synthetic oil + 497 L natural oil= 852 L of petrolyn oil
Answer:
the answer to that problem is:67 min.
Step-by-step explanation:
50+12+5=67 min.
