Yvette encoded a secret phrase using matrix multiplication. Using A = 1.B = 2. C = 3, and so on, she multiplied the clear text

code for each letter by the matrix Cu

t

to get a matrix that ventes

to get a matrix that represents the encoded text. The matrix representing the

2

4873114 30 136 78 35

encoded text is

(21 32 50 1358 35 15

decode the text

What is the secret phrase? Determine the location of spaces after you

O FIND THE PRODUCT

O FIND THE INVERSE

O FINE IS THE PIANO

O FINE IS A WARM DAY

y + 11 = (1/4)(x + 16)

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

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