S + A = 450
$4S + $6A = $2340
S + A = 450
-6(S + A = 450)
-6S +-6A = -2700
4S + 6A = 2340
-2S = -360
-2S/-2 = -360/-2
S = 180
S + A = 450
180+ A =450
180-180 + A = 450-180
A = 270
Check
$4S + $6A = $2340
$4(180) + $6(270) = $2340
$720 + $1620 = $2340
$2340 = $2340
Three smaller surface area = 6*3=18, while bigger = 14, so three smaller will melt faster.
Perimeter formula: p = 2(w + l)
The perimeter is 62.
p = 62
The width of a rectangle is 5 feet less than the length.
w = l - 5
Substitute and solve.
62 = 2[(l - 5) + l)]
62 = 2l + 2l - 10
62 = 4l - 10
72 = 4l
18 = l
Substitute and solve for the width
w = 18 - 5
w = 13
Therefore, the length is 18 and the width is 13.
Best of Luck!
Answer:
Step-by-step explanation:
We need to find the LCM of 12 and 9.
<u>Their LCM is:</u>
- LCM(12, 9) = 2*2*3*3 = 36
Number of light fixtures and light bulbs is 36.
<u>Number of packages will be:</u>
- 36/12 = 3 and
- 36/9 = 4 respectively.
Answer:
A
Step-by-step explanation: