Answer:
the answer is 25
Step-by-step explanation:
because (4x-25) is equal to 75
so put the equation together and solve for x
4x-25=75
+25= 75+25
4x=100
x=25
Answer:
Step-by-step explanation:
You can solve this equation with the quadratic formula which is:
All you need to do is rearrange the equation (add 
to both sides and then multiply both sides by 2) to get:
From this new equation, we can easily see that a = 2, b = -5, and c = 11 AND you don't have to work with as many fractions. Substitute the values for a, b, and c into the quadratic formula to get:
That simplifies to:
Which simplifies even further to:
Which gets you:
P.S. The plus-minus sign wasn't working for me, so I had to just write, "+or-". I hope that didn't make it too confusing for you.
P.P.S. Hope this helps :) Don't forget to mark Brainliest if it did.
Answer:
140
Step-by-step explanation:
- 143,622 bacteria present on day 15
- the bacteria doubles twice a day
that means each day backwards, the bacteria is four times less the day before
therefore:
- on day 14, the number of bacteria is 143,622 / 4
which is 35,905.5
and so on!
so:
- day 13 = 8,976.375
- day 12 = 2,244.09375
- day 11 = 561.0234375
- day 10 = 140.255859375
this rounded to the nearest whole number is
= 140 bacteria
(you can't have a part of a bacteria!)
hope this helps! :)
Answer:
P(S+B)=0.5*0.6=0.3
Step-by-step explanation:
Use the multiplication rule if the events are independent.
<span>Round this to the nearest thousand. 4,589,215
= </span>4,589,000
