MATHEMATICS COLLEGE

When factoring x2 – 3xy + 2y2 by grouping the first step can be:Question 7 options:

x2 – 4xy + xy + 2y2


x2 – 2xy – xy + 2y2


x2 – 3xy + xy + 2y2


x2 + 2xy - 5xy + 2y2

Answers

Answer 1
Answer:

Answer:

x^2 – 3xy + 2y^2

Step-by-step explanation:

Factor the following:

x^2 - 3 x y + 2 y^2

Hint: | Factor the quadratic x^2 - 3 x y + 2 y^2.

The factors of 2 that sum to -3 are -1 and -2. So, x^2 - 3 x y + 2 y^2 = (x - 1 y) (x - 2 y):

Answer:  (x - y) (x - 2 y)

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Write 3x – 1 + 5x + 7 in simplest form.

Answers

Answer:

8x-6

Step-by-step explanation:

Choose the true statement.
0-2<-3
O-2» -3
O -2 = -3

Answers

0-2>-3 is the answer, because negative 2 is greater than negative 3.

How many solutions does this system have?
-x + 2y = 16
4x - 8y = -64​

Answers

Infinite number of solutions
Multiply first equation by -4
You would get the same equation as the second one

Juan and Rob Are selling cookie dough for a school fundraiser Juan Has t Cookie dough Orders Rob has 40 cookie dough orders they have a total of 75 cookie dough orders all together

Answers

Answer:

Juan has 35 orders

Step-by-step explanation:

you subtract 40 from 75 to get 35

17
Σ (15 – 9n)
η = 4

Answers

Answer:

  -1113

Step-by-step explanation:

You apparently want the sum of the 14-term arithmetic sequence ...

  -21, -30, -39, ..., -138

The average term is ...

  (-21 -138)/2 = -79.5

so the sum of the 14 terms is ...

  (14)(-79.5) = -1113

                                17

                                  Σ (15 – 9n)  = -1113

                                 η = 4

  • nth term

                         aₙ = 15 - 9n

        a₄ = 15-9*4 = 15-36= -21

       a₁₇ = 15 - 9(17) = -138

  • Sum;

                      S = (a₁ + aₙ)*n/2

         n = 14

         a₁ = a₄= -21

         aₙ = a₁₇ = -138

                   S = (-21 - 138)*14/2

                   S = -1113

Sofia bought a clothes iron that was discounted 15% off of the original price of $35. What was the sale price of the clothes iron?

Answers

Answer:

35 - 0.15 * 35 so it is $29.75

Step-by-step explanation:

I got u

Answer:

$29.75

Step-by-step explanation:

15% = .15

.15 x 35 = 5.25

35 - 5.25 = 29.75
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