Can you please explain how to do the question that aren’t answered in the picture. It’s due tomorrow and my teacher. only example in ed how to do the two questions i answered. also if you can answer the 6 questions at the bottom i missed that lesson.

thank you :)

14) x = 50

15) x = 112

18) x = 120

19) x = 28

21) 112

23) 90

25) 22

26) 158

I don't know the answer to #20 but good look :)

#13 is x=50

Step-by-step explanation:

57+43= 100

180-100=80

x+x+80= 180

2x=100

x=50

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75