Ravi drove 693 miles in 11 hours.

Mathematics

1 answer:

gregori [183]3 years ago

4 0

Answer:

Step-by-step explanation:

Set up a proportion

693 miles / 11 hours = 315 miles / x hours

Notice that the numerators both have the same units (miles).

Cross multiply

693x = 11 * 315 Combine

693x = 3465 Divide by 693

x = 5

It will take him 5 hours to go 315 miles

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Answer:

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Find a solution to the linear equation −2x−2y=8 by filling in the boxes with a valid value of x and y.Provide your answer below:

inna [77]

Given

$-2x-2y=8$

To find a solution for the linear equation, the first step is to write the equation in slope-intercept form:

-Pass the x-term to the right side of the equation by applying the opposite operation to both sides of the equal sign:

$\begin{gathered} -2x+2x-2y=8+2x \\ -2y=2x+8 \end{gathered}$

-Divide both sides by -2:

$\begin{gathered} \frac{-2y}{-2}=\frac{2x}{-2}+\frac{8}{-2} \\ y=-x-4 \end{gathered}$

Once you have expressed the equation of the line in slope-intercept form, replace it with any value for x and calculate the corresponding value of y, for example, x=2

$\begin{gathered} y=-(2)-4 \\ y=-2-4 \\ y=-6 \end{gathered}$

One solution for the linear equation is x=2 and y=-6, you can check the solution by replacing the values on the original equation, with both values the result should be 8: