crysstalrose1512
crysstalrose1512 crysstalrose1512
  • 24-09-2021
  • Mathematics
contestada

1) Is y=-3 a solution to the equation-3x^2=-27

2) is (-4,10) a solution to the equation 10-5x=y

Brainliest to the person who explains their answers

Respuesta :

zmcever
zmcever zmcever
  • 24-09-2021

Answer:

1)Yes

2)No

Step-by-step explanation:

1) 3x^2 = -27

3 (-3)^2 = -27

Once you substitute your value in for x, you can follow the rule PEMDAS to solve the equation.

3 (-9) = -27

-27 =-27

2) 10 - 5x = y

In an ordered pair, the first number is x and the second number is y.

10 - 5 (-4) = 10

10 - 20 = 10

-10 = 10

-10 ≠ 10

PEMDAS: A rule that states solving an equation by the order of operations:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

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