Answer:
20x + 15 = 11
Step-by-step explanation:
First you need to add the like terms:
-7+2=-5
Now you need to expand the brackets:
-5*-4x=20x
-5*-3=15
Now you have 20x + 15 = 11. So if you want you can rearrange the formule to find x.
20x=-4
x= -5
The answer is C.(There are 8 bacteria cells after 15 minutes.)
Answer:
x=3
Step-by-step explanation:
Answer:
52 km/hr
Step-by-step explanation:
Speed equals distance over time.
2 hours 45 minutes = 2.75 hours
S = 143/2.75
S = 52
The car’s speed is 52 kilometers per hour.
