5/7
explanation: (5-0)/(7-0) = 5/7
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:
1 ) a 2) b 3) d 4) b 5) a 6) c
Step-by-step explanation:
<h2><u>Answer</u></h2>
11 209/250
<h2><u>Explanation</u></h2>
5.815 + 6.021
First add the numbers the way they are.
5.815
<u> +6.021</u>
<u> 11.836</u>
The whole number is 11.
11.836 = 11 + 0.836
0.836 = 836/1000
Dividing byy 4 we get,
0.836 = 836/1000 = 209/250
∴ 11.836 = 11 209/250
I think b= -4.75 in this equation
