PLEASE HELP, need so I can graduate.

BlackZzzverrR [31]

The answer is: " 32a² − 24a − 8 " .
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Given:
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(8a − 8)(4a + 1) ; Let us expand this expression using the: "FOIL" method.
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"FOIL" stands for "First terms, Outer terms, Inner Terms, Last Terms" ;
 in that order.
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Basically:
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(a + b)(c + d) = ac + ad + bc + bd ;

in which the:

First term is: "ac" ;
Outer term is: "ad" ;
I nner term is: "bc" ;
Last term is: "bd " .
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So; we have (given):

(8a − 8)(4a + 1) ;
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Let's take the "First, Outer, Inner, and Last terms" ; as follows:
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F: (8a)*(4a) = 32a² ;
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O: (8a)*(1) = 8a ;
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I : (-8)*(4a) = -32a ;
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L: (-8)*(1) = -8
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Now, let us write out these terms:
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32a² + 8a − 32a - 8 ;
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Now, combine the "like terms" in this expression; to simplify:

 + 8a − 32a = -24a ;
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and rewrite the simplified expression ; which is:
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 32a² − 24a − 8 .
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6 0

3 years ago

A store sees 120 customers in 8 hours. What is the unit rate ( in customers per hour)?

N76 [4]

Answer:

15 per hour

Step-by-step explanation:

120 people / 8 hours = 15 peeps per hour!

8 0

4 years ago

Read 2 more answers

What number must you add to complete the square?

Travka [436]

B=9 (x+3)^2= x^2+6x+9

7 0

3 years ago

The line plot below shows the distances of discus throws in a contest.

Scrat [10]

I think is 40 meters

6 0

3 years ago

A criminologist has developed a questionnaire for predicting whether ateenager will become a delinquent. Scores on the questionn

Reika [66]

Answer:

Probability=0.8413

So option A is correct.

Step-by-step explanation:

In order to find the probability that the criminologist will classify all of them as delinquents, we will proceed as following:

We are required to find:

P(m>=75|m-N(80,5))

it can be written as:

1-P(m<75|m-N(80,5))

P(m<75|m-N(80,5)) can be solved as

Z=(75-80)/5

Z=-1

Probability = 1-Z(-1)

Fromm distribution table:

Probability=1-0.15866

Probability=0.8413

So option A is correct.

6 0

4 years ago