73 and 83 are your answerr
Answer:
No, it's actually 100
Step-by-step explanation:
If you put brackets in the right places you'll see (3*20)+(4*10)=60+40=100
The total mass was 149.5 grams.
Setting up an equation, we have that the sample size, 39.1, is 5 3/4 (5.75) grams less than 3/10 of the total mass; this gives us
39.1 = 3/10x - 5.75
Adding 5.75 to both sides, we have
44.85 = 3/10x
Multiplying both sides by 10,
448.5 = 3x
Dividing both sides by 3,
149.5 = x
Answer:
Critical points are: 2 , -2 and 3.
Step-by-step explanation:
We have been given the expression:

We will factorize the given expression:
Using 



Critical point are those values of an expression when it is equal to zero
Hence, the critical points are: 2,-2 and -3.