Could u solve this pls?

Mathematics

1 answer:

sergejj [24]2 years ago

5 0

The answer is 20. Hope it helps.

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Solve the following by substitution : -<br><br>x + y = 10<br>x - y = 5

koban [17]

$\begin{cases} x + y = 10 \\ x - y = 5 \end{cases}\\ \\ \begin{cases} y = 10 -x\\ x - y = 5 \end{cases}\\ \\ \begin{cases} y = 10 -x\\ x - (10-x) = 5 \end{cases}\\ \\ \begin{cases} y = 10 -x\\ x - 10+x = 5 \end{cases}\\ \\$

$\begin{cases} y = 10 -x\\ 2x - 10 = 5 \end{cases}\\ \\\begin{cases} y = 10 -x\\ 2x = 5 +10 \end{cases}\\ \\ \begin{cases} y = 10 -x\\ 2x =15 \ \ /:2 \end{cases}\\ \\ \begin{cases} y = 10 -x\\ x =\frac{15}{2} \end{cases}\\ \\$

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7 0

2 years ago

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Ordered pairs: {(4, -2), (0, 6), (2, 8)}

denis23 [38]

Answer:

Step-by-step explanation:

the first values represent the inputs, which are the x values and the other values are the outputs which are the y values

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2 years ago

Evaluate A2 for A = -3. -9 -6 6 9

schepotkina [342]

Evaluate A² for A = -3.

(-3)² = (-3) * (-3) = 9

Your answer is 9.

If the question is, however, evaluate A2, which is 2A, for A = -3, then the answer is:

2A = 2(-3) = -6.

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Which of the following is a solution to the inequality 3x-y<5

Ne4ueva [31]

Answer:

not possible

Step-by-step explanation:

they are all greater than 5

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2 years ago

Please help me idk this