2 years ago

A) x and y are two numbers taken from the list below.

Mathematics

1 answer:

Andrew [12]2 years ago

8 0

Answer:

Step-by-step explanation:

here is a solution :

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One year, the population of a city was 99,000. Several years later it was 82,170. Find the percent decrease.

Mrac [35]

82170/99000=0.83
1-0.83=0.17
answer is 17%

5 0

2 years ago

What are the solutions to the inequality?

denis23 [38]

$(x - 3)(x + 5) \leqslant 0 \\ \begin{cases}x - 3 \geqslant 0 \\x + 5 \leqslant 0 \end{cases} \: \vee \: \begin{cases} x - 3 \leqslant 0\\x - 5 \geqslant 0 \end{cases} \\ \Leftrightarrow \begin{cases}x \geqslant 3 \\ x \leqslant - 5\end{cases} \: \vee \: \begin{cases}x \leqslant 3 \\x \geqslant + 5 \end{cases} \\ \Leftrightarrow x\in\emptyset \: \vee \: - 5 \leqslant x \leqslant 3 \\ \Leftrightarrow - 5 \leqslant x \leqslant 3$