4 years ago

Please answer ASAP. Thank You.

Mathematics

2 answers:

Vanyuwa [196]4 years ago

6 0

Answer:

(-∞, -4]

Step-by-step explanation:

This means all values less than -4 and including -4

It goes from -∞ up to and includes -4

Parentheses for -∞ brackets for -4 since we include it

(-∞, -4]

Usimov [2.4K]4 years ago

4 0

Answer:

$(-\infty,-4]$

Step-by-step explanation:

So we have the inequality:

$x\leq -4$

This means that our solution is all numbers <em>less than or equal to </em>-4. Therefore, in interval notation, this is:

$(-\infty,-4]$

This represents all the numbers from negative infinity up until -4. This is equivalent to the inequality.

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lakkis [162]

We need to satisfy the following equations:

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x + y = -14

Isolating x from the first equation,

x = -14 - y

Substituting this result into the first equation,

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Using the quadratic formula,

$\begin{gathered} y_{1,2}=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ y_{1,2}=\frac{14\pm\sqrt[]{(-14)^2-4\cdot(-1)\cdot(-13)}}{2\cdot(-1)} \\ y_{1,2}=\frac{14\pm\sqrt[]{144}}{-2} \\ y_1=\frac{14+12}{-2}=-13 \\ y_2=\frac{14-12}{-2}=-1 \end{gathered}$

Therefore, the solution is:

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3 years ago

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telo118 [61]

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Please answer ASAP. Thank You.​

Please answer ASAP. Thank You.