Answer:
A) =0
B)t= 0.45 seconds or t= 3.5 seconds
<em>If time is greater than 0.45 seconds then ball will reach height 12m and higher.</em>
Step-by-step explanation:
Given Equation:
h(t)= ------------------------------(Equation 1)
a) Equation to tell if ball reaches height of 12m . for that :
h= 12m
put in Equation 1.
12 =
or =12
or -12 = 0
=0
or = 0 -----------------------------------(Equation 2)
<em>This Equation tells if ball reaches height of 12m</em>
b) Does ball reaches height of 12m :
For that, the value of time can be found out from the equation above,
= 0
It can be solved using the quadratic formula:
t= 0.45 seconds or t= 3.5 seconds
If time is greater than 0.45 seconds then ball will reach height 12m and higher.
Answer:
6x^2+7x+4
Step-by-step explanation:
Explanation is in photo
Answer:
Step-by-step explanation:
The standard form of a circle's equation is (x-h)² + (y-k)² = r² where (h,k) is the center and r is the radius. To convert an equation to standard form, you can always complete the square separately in x and y.
1/3 would you like an explanation
Answer:
4, A fraction is the numerator divided by the denominator.
Step-by-step explanation:
Fractions do not involve multiplying! It is dividing, so we can rule out all the multiplication related questions.
The top number of a fraction is the numerator<u><em> 2</em></u>/3.
The bottom number is the denominator 2/<em><u>3.</u></em>
The / is a sign of division.
So, 1 is wrong and 4 is right.