Please please help me!!

Mathematics

1 answer:

Gnom [1K]3 years ago

3 0

Answer:

infinite solution

Step-by-step explanation:

if substitute 3y+4 Into 3x your equation should be 3(3y+4)-9=12 then you multiply and combine like terms then your answer should be 12=12 which is a true statement meaning it has infinite solutions

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Please help me answer it for 10 free points.

Tanya [424]

Answer:

minimum temp: 278 degrees. Maximum temp: 292 degrees

Step-by-step explanation:

First, what goes in the absolute value? It is the difference between 285 and the actual temperature, because this needs to be no larger than 7. Your starting equation will look like this.

$| x-285| \leq 7$

You then have to split this into 2 different equations.

$x-285 \leq 7$ and $x-285 \geq -7$

The reason the second one is flipped an negative is because for it to be no more than 7 degrees below, the difference will need to be closer to zero, which means greater than -7.

Now you simply solve your 2 separate equations.

Starting with the first one:

$x-285 \leq 7\\ +285 and +285$