Answer:
$1.5
Step-by-step explanation:
Lets us first calculate energy consumed by TV in 30 days.
Energy consumed by TV in one hour : 250 watts.
TV operated 2 hours a day
so energy consumer by TV in a day = 250 * 2 watts = 500 watts hour
Energy consumed by TV in 30 day = energy consumer by TV in a day * 30
= 500*30 watts = 15,000 watt-hour
Convert total energy consumed in kilo watt hour
we know that one kilowatt hour = 1000 watt-hour
Thus, 15,000 watt-hour = 15,000/1000 kilowatt-hour = 15 kilowatt-hour
________________________________
cost of electricity = 10 cents per kilowatt-hour
cost of electricity for 15 kilowatt-hour = 15* cost of electricity for one kilowatt-hour( which is 10 cents)
=>15*10 = 150 cents
As $1 = 100 cents
hence 150 cents = $150/100 = $1.5 .
Thus, it cost $1.5 to to operate for a month of 30 days.
6+2=8, right? Okay. Next, all you have to do is take away the equation "6+2". Now what you have is... 8x5. That's easy! 40. This is a very easy problem if you think about it.
Answer:
Below in bold.
Step-by-step explanation:
I'll solve a few of them to illustrate the method:
a) 5x - (3x - 1) = x - 4
The aim is to get all the 'x' terms to one sides of the '=' and the numbers to the other side:
Distribute the negative over the 3x - 1 in the parentheses:
5x - 3x + 1 = x - 4 ( Note that -* -1 = + 1)
Now subtract 1 from both sides:
5x - 3x + 1 - 1 = x - 4 - 1
5x - 3x = x - 5
Now subtract x from both sides:
5x - 3x - x = x - x - 5.
2x - x = -5
x = -5.
(b) 3/5 x + 1 = 2/5 - 3x
We first get rid of the fractions by multiplying each term by 5:
5 * 3/5 x + 1*5 = 5 * 2/5 - 5*3x
3x + 5 = 2 - 15x
3x + 15x + 5 = 2 - 15x + 15x (adding 15x to both sides)
18x + 5 = 2 Subtract 5 from both sides:
18x + 5 - 5 = 2 - 5
18x = -3
Now we divide both sides by 18:
x = -3/18 = -1/6.
g) 0.3(6 + m) = 0.4(8 - m)
0.3 * 6 + 0.3* m = 0.4*8 + 0.4 * -m ( Distributing the 0.3 and 0.4 over the parentheses)
1.8 + 0.3m = 3.2 - 0.4m ( recall that + * - = -)
1.8 - 1.8 + 0.3m = 3.2 - 1.8 - 0.4m
0.3m = 1.4 - 0.4m
0.3m + 0.4m = 1.4 - 0.4m + 0.4m
0.7m = 1.4
m = 1/4/0.7
m = 2.
I hope this helps.
Answer:
Click on your profile icon (next to friends icon) at the bottom it will say what current plan you are on and.... the square root of 10 is positive 3
Step-by-step explanation:
Answer:
$24
Step-by-step explanation:
I did this question and got it right.
