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stiv31 [10]
3 years ago
12

Find s(20) for the sequence s(n)=5n-2,ne {1 2, 3,... }

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0

Answer:

Step-by-step explanation:

c

S(20)=

5*20-2=100-2=98

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Evaluate the expression when a=-7 and x=6 .<br> X-2a
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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}

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\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

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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:

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As you can see the values are a valid solution for the linear equation.

So the solution is:

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Answer:

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Step-by-step explanation:

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3 years ago
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