Which expression is the factored form of -4.5n+3?
1 answer:
You might be interested in
Answer:
There is a 90.32% probability that the cake was baked by Doug.
Step-by-step explanation:
We have these following probabilities:
A 70% probability that Doug bakes the cake.
A 30% probability that Jeremy bakes the cake.
A 40% probability that a cake baked by Doug gets a thumbs up.
A 10% that a cake baked by Jeremy gets a thumbs up.
One cake was selected at random on 10/01/2014 and got a "thumbs up".
1. Find the probability that the cake was baked by Doug.
The probability that a baked cake gets a thumbs up is:
Of those, 0.7*0.4 = 0.28 are baked by Doug.
So the probability is:
There is a 90.32% probability that the cake was baked by Doug.
The 20 represents the specific section, the 8 adds onto that side making the full side 8.
-> See attached
Using this, we can set up a proportion to solve;
<em>Sides of the smaller triangle are on the top, and sides of the larger triangle are on the bottom</em>
[Proportion we made]
[Cross-multiply]
20x = 140
[Divide both sides of the equation by 20]
x = 7 ✓
This is how they reached 7, I hope this answer explains it so you can understand.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
