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Andrews [41]
2 years ago
14

Electrical energy (E) is measured in kilowatt hours (kwh) using the formula E = P · t, where P is the power in kilowatts and t i

s the time in hours.
If 66 kwh of electrical energy are created over a period of 11 hours, how many kilowatts of power are used each hour?
Mathematics
1 answer:
anygoal [31]2 years ago
8 0

Answer:

6 kw    are used each hour

Step-by-step explanation:

E = P t

E/t = P

66 kwh /11h = 6 kw

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Which is an equivalent form of the expression 1800(1.2)^-t
ololo11 [35]

Answer:

1800(5/6)^t

Step-by-step explanation:

I don't see any answer choices, but this would be another form if it is listed. The negative exponent means that you get the reciprocal of the fraction (in this case 1.2). This turns 1.2 into (1/1.2), which is equivalent to 5/6.

7 0
2 years ago
Need help not sure about my answers
shusha [124]

Answer:

  x = 0, x = 1

Step-by-step explanation:

Both graphs correctly plot f(x).

Only the bottom graph correctly plots g(x).

The points of intersection of f(x) and g(x) are (0, -4) and (1, -2). The x-value of these points are x = 0 and x = 1. These are the values of x for which f(x) = g(x).

3 0
3 years ago
Solve the system of equations by substitution <br> y= 3x - 10<br> 3x + 2y = 16
Natalija [7]
Y= 3x - 10
<span>3x + 2y = 16

3x+2(3x-10)=16
3x+6x-20=16
9x-20=16
9x=36
x=4

y=3x-10
y=3(4)-10
y=12-10
y=2</span>
5 0
4 years ago
To sew a pair of jeans, 630 feet of thread is needed. Unfortunately the fabric store only sells thread in yards. How many yards
inna [77]

Answer:

210

Step-by-step explanation

One yard is equal to 3 feet so the simplest way is to divide the number of feet by 3 and that will give you your answer.

6 0
2 years ago
Dan is on his way home in his car. He has driven 10 miles so far, which is one-half of the way home. What is the total length of
dusya [7]

Answer:

20 miles

Step-by-step explanation:

10miles × 2 = 20miles

3 0
3 years ago
Read 2 more answers
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