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Musya8 [376]
3 years ago
5

How much energy is required to lift a 9 kg (20 lb) bag of rice from the floor to the trunk of your car located 0.9 meters above

the ground? What kind of energy does the rice have when it is sitting in your trunk? To receive full credit, show all of your work in the space below.
Mathematics
1 answer:
kramer3 years ago
4 0
Potential energy = mass X acceleration due to gravity X height
= 9 X 10(or 9.8) X 0.9
= 81 J (Joule)
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I need help with math homework #2 algebra
OverLord2011 [107]

Answer:

A. (0, -2) and (4, 1)

B. Slope (m) = ¾

C. y - 1 = ¾(x - 4)

D. y = ¾x - 2

E. -¾x + y = -2

Step-by-step explanation:

A. Two points on the line from the graph are: (0, -2) and (4, 1)

B. The slope can be calculated using two points, (0, -2) and (4, 1):

slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{1 -(-2)}{4 - 0} = \frac{3}{4}

Slope (m) = ¾

C. Equation in point-slope form is represented as y - b = m(x - a). Where,

(a, b) = any point on the graph.

m = slope.

Substitute (a, b) = (4, 1), and m = ¾ into the point-slope equation, y - b = m(x - a).

Thus:

y - 1 = ¾(x - 4)

D. Equation in slope-intercept form, can be written as y = mx + b.

Thus, using the equation in (C), rewrite to get the equation in slope-intercept form.

y - 1 = ¾(x - 4)

4(y - 1) = 3(x - 4)

4y - 4 = 3x - 12

4y = 3x - 12 + 4

4y = 3x - 8

y = ¾x - 8/4

y = ¾x - 2

E. Convert the equation in (D) to standard form:

y = ¾x - 2

-¾x + y = -2

8 0
3 years ago
HELP ASAP!!!
Veseljchak [2.6K]
I don't know. This seems tricky. But I do know that the probability would be 1 divided by the probability. So A and D is Incorrect. Theres never really a 50-50 chance with Locker doors so I'm gonna go with C.

I'm not guaranteed this is the answer. But I do Hope it helps. =)

7 0
3 years ago
Read 2 more answers
2 of 6
Elodia [21]

Answer:

89:120

Step-by-step explanation:

convert the both times to minutes

2 hours is 120 mins

89:120

both divisible by 1

89:120

it cant be simplified further

8 0
3 years ago
What is the sum of ​ 13 5/7 + 13/28 ​ ?
nydimaria [60]

<em><u>Look at the attached picture⤴</u></em>

<em><u>Hope it will help u....:)</u></em>

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3 years ago
21 is what percent more than 16
Serjik [45]
its 50% percent more, 50% is ur answer
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