Simplify the following: 6a + 3 (2a - 7) -9

2 answers:

4 0

-24a-30. This is so because when you distribute you get numbers with like terms which you can then combine into a "simple" answer.

DedPeter [7]3 years ago

3 0

1 Expand

6a+6a−21−9
2 Collect like terms

(6a+6a)+(−21−9)
3 Simplify

12a−30
I hope this helps. :)

You might be interested in

Please help me please

Contact [7]

Answer:

458

Step-by-step explanation:

6 0

3 years ago

garfield 3/4 of cat food each day. Another cat named kitty eats 1/2 of can of cat food each day. Cat food cost $5.00 at Costco f

ASHA 777 [7]

What answer do you want me to solve for?

4 0

4 years ago

It is a well-known fact that 50% of the general population are rascals (P(R) = 0.5) and 50% of the general population are not ra

aleksley [76]

Answer:

The answer is D. 0.75

Step-by-step explanation:

Let call R the event that a person is rascal, RC a person is not rascal, TH a person use top hat and NTH a person don’t use top hat.

From the information on the question we have 4 options with their respective probability:

1. A person could be rascal and use top Hat: this probability is calculate as the multiplication of the probability of be a rascal (0.5) and use a top hat (0.9), then:

P(R y TH)=0.5*0.9=0.45

2. A person could be rascal and don’t use top Hat: this probability is calculate as the multiplication of the probability of be a rascal (0.5) and not use a top hat (0.9), then:

P(R y NTH)=0.5*0.1=0.05

3. A person could be not rascal and use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and use a top hat (0.3), then:

P(RC y TH)=0.5*0.3=0.15

4. A person could be not rascal and not use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and not use a top hat (0.7), then:

P(RC y NTH)=0.5*0.7=0.35

Then the probability that a person is a rascal given that he is wearing a top hat could be written and calculate as:

$P(R/TH)=\frac{P(R y TH)}{P(TH)}$