Answer:
Step-by-step explanation:
2915 can stay as it is; 15.458 should be rounded down to 15. Then we have
2915-15, or 2900 (which is a very reasonable estimate).
1,507.125 square inches. Yes I did just answer this again.
Expand (x+2)^2: x^2 + 4x + 4 : remember that (a+b)^2 = a^2 + 2ab + b^2
So: x^2 + 4x + 4 - x^2 = 60
Answer:
smaller (t) = 2 and this in coordinates form (2,0)
larger (t) = 15 and this in coordinates form (15,0)
the vertex of the parabola = or in decimals (8.5, 42.25)
Step-by-step explanation:
- For the zeros of the function take each bracket and make it equal to zero.
SMALLER (t):
(t-2)=0
(add 2 for both sides)
t=2
LARGER (t):
(t-15)=0
(add 15 for both sides)
t=15
- For the vertex of the parabola you do:
step1: expand the brackets:
f(t)=-(t-2)(t-15)
f(t)=
step2: define a,b and c using the expression :
a= -1 (the coefficient of )
b= 17 (the coefficient of t)
c= -30 (the single number without a letter)
step3: sub the values in the formula to find the x coordinate of the vertex :
=
= or in decimals 8.5
step4: sub the value of t (the x-coordinate) in equation f(t):
f(t)=
f ( ) = - + 17× - 30
= + -30
= or in decimals 42.25
(THIS IS A PICTURE OF THE GRAPH↓)
Answer: 14.5
Step-by-step explanation: subtract the amount spilled from the total you had before. The amount spilled is not what he has anymore. Thus, he has 14.5 pounds.