) Erin owes her mom $25. She borrows another $15 from her mom. What is her balance now, that she owes her mom?​

$40

Step-by-step explanation:

she owed $25 at first then she borrowed $15 so now she owed her $40.

25+15=40

40

Step-by-step explanation:

Once you add 25 and 15

5+5=10

so you put the 1 over the 2 than add 2+1 and add 1 from the 10.

So the answer is 40

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

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