Answer:
782 in
Step-by-step explanation:
To find the length of fence, we have to find the perimeter first.
Given
Length = l = 25 feet 8 in
Width = w = 8 feet 8 in
Opening = o =3 feet 6 in
So,
we have to convert the lengths into same unit first
So,
l = (25*12)+8 = 308 in
w = ( 8*12) +8 = 104 in
O = (12*3) + 6 = 42 in
Perimeter = 2(l+w)
= 2(308+104)
=2(412)
=824
As the opening does not need fencing
Total fence = P - o
= 824 - 42
=782 in
or
65 feet 2 in ..
Do you want us to do all seven? I don't think so.
17. s for Sonia, m for Sam, n for Nigel
s = 13.2 + 1.4 m
n = -10 + 2.5 m
n = 12 + s
First and third,
n = 12 + (13.2 + 1.4 m)
Second and that one,
-10 + 2.5m = 25.2 + 1.4m
1.1m = 35.2
m = 35.2/1.1
m = 32
Answer: 32 kg
18.
f - # of $500 tickets, t - $300 tickets, w - $200 tickets
t = 2f
w = -60 + t
500f + 300t + 200w = 48000
f = t/2
500(t/2) + 300t + 200(-60 + t) = 48000
750t = 60000
t = 80
w = -60 + t = 20
Answer: 20
19.
c + b = 171
c/9 = b/9 -5
c = b - 45
Adding,
2c + b = b + 126
c = 63
Answer: 63
Three's my limit.
Area of the walls = 2*8*21 + 2*8*28 = 784 sq feet
so number of gallons required = 784/350 = 2.24 gallons answer
D. Better measure of the center: mean
