A. 5 invitations
b. 15 invitations
Comment if you need me to explain it.
1 man earns 810 / 12 = $67.5 in 10 days
by proportion 1 man will earn 0.8 * 67.5 = $54 in 8 days
So 14 men will earn 54 * 14 = $756 in 8 days.
(
)we need 3 equations
1. midpoint equation which is (
) when you have 2 points
2. distance formula which is D=
3. area of trapezoid formula whhic is (b1+b2) times 1/2 times height
so
x is midpoint of B and C
B=11,10
c=19,6
x1=11
y1=10
x2=19
y2=6
midpoint=(
)
midpoint=(
)
midpoint= (15,8)
point x=(15,8)
y is midpoint of A and D
A=5,8
D=21,0
x1=5
y1=8
x2=21
y2=0
midpoint=(
)
midpoint=(
)
midpoint=(13,4)
Y=(13,4)
legnths of BC and XY
B=(11,10)
C=(19,6)
x1=11
y1=10
x2=19
y2=6
D=
D=
D=
D=
D=
BC=
X=15,8
Y=(13,4)
x1=15
y1=8
x2=13
y2=4
D=
D=
D=
D=
D=
XY=
the thingummy is a trapezoid
we need to find AD and BC and XY
we already know that BC=
and XY=
AD distance
A=5,8
D=21,0
x1=5
y1=8
x2=21
y2=0
D=
D=
D=
D=
D=
AD=
so we have
AD=
BC=
XY=
AD and BC are base1 and base 2
XY=height
so
(b1+b2) times 1/2 times height
(
) times 1/2 times
=
(
) times \sqrt{5} [/tex] =
=
=80
=252.982
X=(15,8)
Y=(13,4)
BC=
XY=
Area=80
square unit or 252.982 square units
Answer:
sure its ablackmore
Step-by-step explanation:
The function is
, and according to the description of the function in the problem statement, we have the following:
at t=0 after being thrown (that is, at initial time), the height of the ball is calculated by h(0) as follows:
(ft), which is the initial height, as expected.
At t=1 (sec), the height would be
.
etc.
The path is parabolic, as we know by seeing that the function is a quadratic polynomial function. This function has been given in factored form as well. From that we can see that the zeros of the function are t=7 and t=-2.
This means that at t=7 sec, the height h is 0, which means that the ball has hit the ground. t=-2 has no significance in the context of our problem so we just neglect it.
Answer: B) 7 sec