Cannot see all of the first question but for the paint question: if he’s got 1 1/3 gallons and 3/6 gallons already, 3/6 can be reduced to 1/2 then added to the 1 1/3 to give him a total of 1 3/4 gallons. 4 1/2 - 1 3/4 means he’ll need 2 and 3/4 gallons.
OK. Here we go:
What is the square root of 9 ?
You would say that 3 is, and you're correct.
But that's NOT the <em>only one</em> there is !
What about -3 ?
What do you get when you multiply (-3) times (-3) ?
(Remember that when the signs of both numbers are <em>the same</em>,
the answer is positive.)
(-3) times (-3) = 9
So -3 is <em>also</em> the square root of 9 .
That's right . . . every number has <em>two</em> square roots. They're both the
same number, but one is positive, and one is negative. When you
multiply <em>either one</em> of them by itself, you get the original number.
Another way to say the same thing is:
Every number has one positive square root and one negative square root,
and except for the signs, they're both the same number.
Answer: 7.5 ft by 30ft
Explanation: 12*5/2=60/2=30 ft
3*5/2=15/2=7.5 ft
Answer:
36 meters
Step-by-step explanation:
hope it helps bye
