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3 years ago

How do you answer 5x+8=2x+3

2 answers:

8 0

Solving for x
5x - 8 = 2x + 7
subtract 2x from both sides
5x - 2x - 8 = 2x - 2x + 7
3x - 8 = 7
add 8 to both sides
3x - 8 + 8 = 7 + 8
3x = 15

divide both sides by 3
3x/3 = 15/3
x = 5
Check answer by replacing x with 5 in the orginal equation
5x - 8 = 2x + 7
5(5) - 8 = 2(5) + 7
25 - 8 = 10 + 7
17 = 17

liberstina [14]3 years ago

5 0

X= -5/3 (negative five thirds)

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Verify that your point from Question 2 is a solution to 2x-y=-12x−y=−1 AND is also a solution to y=5x-5y=5x−5. What does it mean

Vera_Pavlovna [14]

Answer:

(a) Verified

(b) They are simultaneous equations

Step-by-step explanation:

Given

$2x - y = -1$

$y =5x - 5$

Required

Verify that: $(x,y) = (2,5)$ is a solution

We have:

$2x - y = -1$

Substitute: $(x,y) = (2,5)$

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Because both sides of the equation are equal, then the point is a solution

Also: $y =5x - 5$

Substitute: $(x,y) = (2,5)$

$5 = 5 * 2 - 5$

Evaluate all products

$5 = 10 - 5$

Subtract:

$5 = 5$

Because both sides of the equation are equal, then the point is a solution

Because the given point is a solution to both equations, then they are simultaneous equation

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3 years ago

Olivia's team played 8 games of basketball. During those 8 games her team's score was: 70, 67, 79, 66, 64, 80, 64 and 75. Find t

castortr0y [4]

Answer:

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Step-by-step explanation:

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To find it, add up all the terms and divide it by the number of terms.

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Answer:

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Step-by-step explanation:

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equate each factor to zero and solve for x

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