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
This is not full question I think
Answer:
27/125
Step-by-step explanation:
multiply it 3 times
Answer:
a. Life span increased
b. The median age could rise because of the improvement in medical technology. Also more advertisement of healthier life styles, such as eating healthy could have increase the median age.
c. No because this just shows the increase in life span not the decrease in children.
Step-by-step explanation:
a. more people on average lived longer lives. (explanation)
b. self explanatory I guess, my answer pretty much explained it.
c. life span of US citizens does not effect the children population. I guess you could say people lived longer lives to have more children, so possibly the number of children could have increased.
1. false= 3•2+3•4
2. true
3. false= 7•20+7•8
4. false= 4•5+4•10
5. true
