12.42
12°+.42(60)
12°25.2'
12°25'+.2(60)
12°25'12"
Answer:
33
Step-by-step explanation:
- Fabric for 1 pillow case: 1.5 ÷ 3 = 0.5
- Amount of pillow cases made with 16.5 yards of fabric: 16.5 ÷ 0.5 = 33
I hope this helps!
Answer:
a) $7.27344
b) 263.974 hours
Step-by-step explanation:
a)
+) 1 day = 24 hours
+) The cost for 1000 watts each hour is $0.05051 so that each hour use of 1 watt costs: $0.05051 / 1000 = $0.00005051
+) Each hour, each electric heater uses 1200 watts costs: $0.00005051 x 1200 = $0.060612
=> In 24 hours, to heat each electricity heater costs: $0.060612 x 24 = $1.454688
=> In 24 hours, to heat 5 electricity heaters costs: $1.454688 x 5 = $7.27344
<em>So that it costs $7.27344 to heat her house for 1 day</em>
<em />
b)
As calculated, the cost to use 1 watt in one hour is $0.00005051
=> The cost to use 75 watts in one hour is: $0.00005051 x 72 = $0.00378825
Assume that the hours of using 72 watts to cost $1 is x (hour)
So that: $0.00378825 * x = $1
=> x = 1/ 0.00378825= 263.974 hours
<em>It takes 263.974 hours for a 75-watt lightbulb to stay on to result in $1 electricity charges</em>
<em />
Answer:
EF=6
Step-by-step explanation:
E is the midpoint, so DE = EF
DE = 15-3x
EF = x+ 3
Since DE = EF,
15 - 3x = x + 3
-4x = -12
x = 3
If x = 3,
DE = 15 - 3*3, 15 - 9 = 6
EF = x+ 3, so EF = 3 + 3 = 6
