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it would take 25 days

Step-by-step explanation:

It would take 25 days, so C is the answer.

Step-by-step explanation:

We know that Petra walks her dog for 2/5 mi each day. We want to know how long it would take them to walk 10 mi. In order to solve this, divide 10 by 2/5

[tex]\frac{10}{1} ÷ \frac{2}{5} = \frac{10}{1} * \frac{5}{2} = \frac{50}{2} = 25

Just use basic fraction division :)

answer: 1 and 3

step-by-step explanation:

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