Answer:
If your trying to solve for a, I believe this is the answer: a = 4b / (2 - c)
Step-by-step explanation:
2a - b = ac + 3b
First you want to group by like terms, so for "b" you are going to add "b" to both sides so that it cancels out on the left side and you now have all of your "b's" on the right.
2a = ac + 4b
next, you want to get the a's on the left side so you are going to subtract "ac"
2a - ac = 4b
Now, you need to factor the "a" out, and since its the greatest common factor among the "2a - ac" you are left with "a(2 - c)"
a(2 - c) = 4b
Finally divide both sides by "(2 - c)"
a = 4b / (2 - c)
and that's your answer
Using proportions, it is found that Mason ran 620 meters.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Considering the ratio, the <em>rule of three</em> is given as follows:
2 laps for Mason - 3 laps for Laney.
n meters for Mason - 930 meters for Mason.
Applying cross multiplication:
3n = 930 x 2
n = 930 x 2/3
n = 620
Mason ran 620 meters.
More can be learned about proportions at brainly.com/question/24372153
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I think it’s the third one a - 5 = b
Answer:
x = 5 ; y = 14
Step-by-step explanation:
2x = 10
x = 5
y + 2 = 16
y = 14
Line BC passes through (-5,5) and (0 ,1)
Slope = 5-1/-5-0 = -4/5
Line BC cuts the y-axis at (0,1)
⇒ y-intercept must be 1
General Equation of a linear line: y = mx + b
Plug m = -4/5 and b = 1 into the general equation and find the equation of line BC:
y = -4/5x + 1
Multiply by 5 on both sides:
5y = -4x + 5
Add 4x to both sides:
4x + 5y = 5
Answer: 4x + 5y = 5 (Option C)