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Vera_Pavlovna [14]
3 years ago
9

Solve 20x+5y=15 for y.

Mathematics
2 answers:
nadya68 [22]3 years ago
6 0

Answer:

The answer is y=-4x+3

Step-by-step explanation:

In order to determine the answer, we have to know about linear equations.

In any linear equation, we have two variables:

  • y=f(x): dependent variable.
  • x: independent variable.

So, the value of "y" always depends on the value of "x". Sometimes it is better free the "y" variable in one side. In this way, we can see the slope of the linear equation which is the coefficient next to the "x" variable.

Solving the equation for "y":

20x+5y=15\\5y=-20x+15\\y=-\frac{20}{5}x+\frac{15}{5}\\\\y=-4x+3

For this problem, the slope is -4.

Finally the solving for "y" is y=-4x+3

adelina 88 [10]3 years ago
5 0
Y=4x+3. Hope this helped
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I have no idea where to start on either of these problems. Would someone explain the steps to me? My teacher hasn’t gone over th
bazaltina [42]

Answer:

Problem 9:  -1/2

Problem 10:  1/5

Step-by-step explanation:

Problem 10:  Label the given ln e^(1/5) as y = ln e^(1/5).

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Problem 9:    Let y = (log to the base 4 of) ∛1 / ∛8, or

                            y = (log to the base 4 of) ∛1 / ∛8, or

                             y = (log to the base 4 of) 1 /2

Write out the obvious:              

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3 0
3 years ago
The equation of the line passing through the points (−10, 0) and (−8, 20) can be expressed as y = mx + b. Give the value of b.
weeeeeb [17]

Given are the two points (-10,0) and (-8,20), and equation of the line as y=mx+b.

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0 = -10m + b .........equation(1)

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Subtracting equation(1) from equation(2)

20 - 0 = (-8m + b) - (-10m + b)

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3 years ago
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