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dangina [55]
3 years ago
8

Use the distributive property to expand

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
6 0

Answer:

  • (D) 8/5 - 12x

Step-by-step explanation:

  • -4*(-2/5 + 3x) =
  • -4*(-2/5) - 4*(3x) =
  • 8/5 - 12x

Correct choice is D

Kruka [31]3 years ago
4 0

Answer:

D. 8/5-12x

Step-by-step explanation:

  • -4(-2/5+3x)
  • (-4 × -2/5) + (-4 × 3x)
  • ( 8/5 )+ (-12x)
  • 8/5 - 12x

Option D is the correct answer.

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3 years ago
Examine the system of equations. y = 3 2 x − 6, y = −9 2 x + 21 Use substitution to solve the system of equations. What is the v
nadezda [96]

Answer:

<h2>y = -4/9</h2>

Step-by-step explanation:

Given the system of equations y = 3/2 x − 6, y = −9/2 x + 21, since both expressions are functions of y, we will equate both of them to find the variable x;

3/2 x − 6 = −9/2 x + 21,

Cross multiplying;

3(2x+21) = -9(2x-6)

6x+63 = -18x+54

collecting the like terms;

6x+18x = 54-63

24x = -9

x = -9/24

x = -3/8

To get the value of y, we will substitute x = -3/8 into any of the given equation. Using the first equation;

y = 3/2x-6

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