Answer:
Yes, you can square a negative number. In fact, any number at all can be squared, even numbers like pi and 0. This is because to square a number just means to multiply it by itself. ... Note that this is positive because when you multiply two negative numbers you get a positive result.
Step-by-step explanation:
number 2
1/3 of 81 = 81 • 1/3 = 81/3 = 27
Answer:
52
Step-by-step explanation:
Given the the equation h(t) =-
where t is the time in second
So to find the ball's maximum height we can apply the vertex formula:
t= 
to find the "x" value of the vertex, then plug that value into the original equation as a substitute for "x".
Standard quadratic form is: 
=> a=15, b=30 in our given equation
<=> t = 
When t =-1 we have h(t) = 
= 52
So the ball's maximum height is: 52
Hope it will find you well.
Answer:
15.75 > 15.57
Step-by-step explanation:
1. 15.75 is greater than 15.57. ">" means greater than.
2. 15.75 < 15.57 is wrong because 15.75 is not less than 15.57
3. 15.75 does not equal 15.57. They are not equal numbers.
4. This means " 15.75 > 15.57" is correct. Even though they are both 15 the number after the decimals are important to look at too. 75 is greater than 57.
