3 years ago

PRE CALC QUESTION, PLEASE HELP

1 answer:

4 0

For applies= associative and distributive
and for doesnt apply = commutative.

im not 100 sure for the distributive answer but ik the other ones are right

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MAVERICK [17]

I believe it’s the first one. i’m very sorry if it’s wrong

3 0

3 years ago

When 7 is subtracted from two third of the square of a number it becomes 17 find the number

Dmitry [639]

Answer: 6 or -6

hello,

Step-by-step explanation:

Let say n the number

$\dfrac{2}{3} *n^2-7=17\\\Longrightarrow\ \dfrac{2}{3} *n^2=24\\\Longrightarrow\ n^2=\dfrac{3*24}{2}\\\Longrightarrow\ n^2=36\\\Longrightarrow\ (n-6)(n+6)=0\\\\n=6\ or\ n=-6\\$