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MAVERICK [17]
3 years ago
15

Solve the system of equations: y = 3x y=x2-4

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
8 0

Answer:

y=12 x=4

Step-by-step explanation:

I will be using the elimination method to solve this

*2 y= 3x

*3 y= 2x-4.

2y= 6x

- 3y= 6x-12

-1y= -12. y= 3x

/-1 /-1. 12= 3x

y=12. /3 /3

4=x

Lubov Fominskaja [6]3 years ago
3 0

Answer:

x = -4

y = -12

Step-by-step explanation:

Since y is 3x,

3x = 2x - 4

On solving we get x as -4

Substitute x and we get y as -12

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Lilianna uses 3/4 calories per minute just by sitting. She uses 1 more calorie per minute by walking. Liliana uses a total of 12
Anon25 [30]

Answer:

Variable d represents the time per minute Lilianna spends in the park.

Step-by-step explanation:

Lilianna uses \frac{3}{4} calories per minute just by sitting. She uses 1 more calorie per minute by walking.

Liliana uses a total of 12\frac{1}{4} calories walking to the park.

Lilianna uses the equation, d(\frac{3}{4}+1)=12\frac{1}{4} to represent the situation.

Here, variable d represents the time per minute she spends in the park.

and is given as,

d(\frac{3}{4}+1)=12\frac{1}{4}

It can be written as,

d(\frac{3}{4}+1)=\frac{49}{4}

Solving for d,

d(\frac{3}{4}+1)=\frac{49}{4}

\Rightarrow d(\frac{3+4}{4})=\frac{49}{4}

\Rightarrow d(\frac{7}{4})=\frac{49}{4}

\Rightarrow d=\frac{49 \times 4}{4 \times 7}

\Rightarrow d=7

Thus, she spend d= 7 minutes total to the park.


5 0
3 years ago
Which phrase matches the expression p+7
dangina [55]

Answer:

the sum of p and 7

5 0
4 years ago
Read 2 more answers
Multiplying and dividing in scientific notation
EleoNora [17]

Hello!

I would be happy to help, but this is an incomplete question.

5 0
4 years ago
3x^3 - 2y^-6x^2y^2+xy for x=2/3 and y=1/2
Dominik [7]

Answer:

-13

Step-by-step explanation:

3x^3 - 2y^-6x^2y^2+xy

x=2/3 and y=1/2

Solve :

3x^3 - 2y^-6x^2y^2+xy

Put value of x and y in this equation

= 3(2/3)^3 - 2(1/2)^-6(2/3)^2(1/2)^2+(2/3)(1/2)

= -13

4 0
3 years ago
PLEASE LOOK AT PICURE THEN ANWSER, WHOEVER IS CORRECT I WILL MARK BRAINIEST :)
irga5000 [103]

Answer:

b.g(x)=x^{2}+3

Step-by-step explanation:

If two graphs have the same shape and you only want to change one's y intercept, you just have to add or subtract the number at which you want the graph to intercept the y axis from the equation

8 0
3 years ago
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