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ASHA 777 [7]
2 years ago
10

Solve the system by substitution. y = -X y = - 4x + 12

Mathematics
2 answers:
IRISSAK [1]2 years ago
8 0

Answer:

Step-by-step explanation:

y = -x

y = -4x + 12

-x = -4x + 12

x = 4

y = -x = -4

bulgar [2K]2 years ago
7 0

Answer:

The answer is ( - 8, 8) in point form or in x = -8 , y= 8 in equation form.

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Can someone help me on this
barxatty [35]

A) as the exponent decreases by one, the number is divided by 5

B) as the exponent decreases by one, the number is divided by 4

C) as the exponent decreases by one, the number is divided by 3

D) 4⁰ = 4 ÷ 4 = 1

    4⁻¹ = 1 ÷ 4 = \frac{1}{4}

    4⁻² = \frac{1}{4} ÷ 4 = \frac{1}{16}

E) 3⁰ = 3 ÷ 3 = 1

    3⁻¹ = 1 ÷ 3 = \frac{1}{3}

    3⁻² = \frac{1}{3} ÷ 3 = \frac{1}{9}


5 0
2 years ago
What is the result of isolating y2 in the equation below? 9x2 + 7y2 = 42
ElenaW [278]
First, move 9x^2 to the right:

7y^2 = 42 - 9x^2

Then, divide 7 on both sides:

y^2 = 6 - 9/7 * x^2
8 0
3 years ago
Given that set A={1,2,3,4,5}and set B={2,4,6,8} AnB'​
Liono4ka [1.6K]

Step-by-step explanation:

First u hv to understand what is asked. Here, u have to find the intersecting numbers from the set A and not included in set B. Thus, u know except foe 2,4,6,8, othher numbers are not in set B. Set A is included 1,2,3,4,5. In this way u can simply find AnB' as AnB'={1,3,5}

8 0
3 years ago
(5x + 2) + (4x + 5)​
Dmitrij [34]

Answer:

9x+7

Step-by-step explanation:

This is because you combine like terms:

5x and 4x contain the same variable and amount of variables so you can combine them making 9x. You are then left with two numbers 5, and 2 they aren't attached to any variables and are in common in that way so you combine them too! This makes them 7, lastly you make it into an expression so you can't combine 9x and 7 so you leave it as 9x+7!!!

6 0
3 years ago
What is an equation for the line perpendicular to y = 3x - 1 that passes through (-9, -2)?
oksano4ka [1.4K]

Answer:

y = -1/3x - 5

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes, so the line is:

y = -1/3x + b

Finding the value of b, using the given point (-9, -2)

-2 = -1/3*(-9) + b

-2 = 3 + b

b = -2 - 3

b = -5

The line is

y = -1/3x - 5

Hopefully, this helps!

7 0
2 years ago
Read 2 more answers
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