2 Answers

Malificent · Answer 1 · 2020-05-11T12:34:05+0000

For number one, i believe it would be 6x + 15Y-12. You just multiply 3 by everything i. the parentheses. I hope this helps :)

Rafelina · Answer 2 · 2020-05-16T06:02:13+0000

Answer:

1. 6x+15y-12

2. 25

3. 5(11x-5)

Explanation:

1. We have the expression
3(2x+5y-4) we have to distribute number 3 to simplify the expression:

$3(2x+5y-4)=\\3.(2x)+3.(5y)-3.(4)=\\=6x+15y-12$

Then the correct answer is the first choice: 6x+15y-12

2. We have to find the value of the expression when c=4, we have

f(c)=4c + 3c -2c + 5

Then when c=4:

$f(4)=4.(4) + 3.(4) -2.(4)+ 5\\f(4)=16+12-8+5\\f(4)=28-3\\f(4)=25$

Then the correct answer is the first choice: 25

3. We have to factor the expression 55x-25,

we can see that (5).11=55 and (5).5=25, then the common factor in this expression is number 5,

$55x-25=\\(5).11x-(5).5=\\=5(11x-5)$

Then the correct answer is the first choice: 5(11x-5)

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