Question

Help me please ASAP!

Answer 1

Answer:

Choice 1

Choice 4

Choice 5

Step-by-step explanation:

For this one you just have to plug in the x in every equation and solve it. If the answer is true it's true, but if it's false it's false.

Let's solve each of these...

Number 1:

$9-3x=0\\9-3(3)=0\\9-9=0\\0=0$

As you can see 0 does equal itself so this one is true.

Number 2:

$3x+1=9\\3(3)+1=9\\9+1=9\\10\neq9$

10 does not equal 9 so this one would be false.

Number 3:

$5x-7=1\\5(3)-7=1\\15-7=1\\8\neq1$

This one is also false.

Number 4:

$2x+4=10\\2(3)+4=10\\6+4=10\\10=10$

This one is true.

Number 5:

$\frac{x}{3}+5=6\\\frac{(3)}{3}+5=6\\1+5=6\\6=6$

This one is true.

Number 6:

$\frac{9}{x}-1=4\\\frac{9}{(3)}-1=4\\3-1=4\\2\neq4$

This one is false.