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Evgen [1.6K]
3 years ago
12

Erin is experimenting with a simple electrical circuit. When she connects a light bulb to a battery, the light bulb begins conve

rting electrical energy into light energy and heat energy. If the battery supplied 25 kilojoules of electrical energy to the light bulb, and the light bulb gave off 4 kilojoules of light energy, how much heat energy did the light bulb give off?
Mathematics
1 answer:
Shtirlitz [24]3 years ago
4 0
<span>how much heat energy did the light bulb give off? </span>21
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Help please I need answer asap BRAINLIEST
KATRIN_1 [288]

Answer:

it should be the same line, if they are completely equal in miles and cost

7 0
4 years ago
A tin of biscuits contains shortbread and choc-chip biscuits in the ratio 2:3 . The tin contains 80 biscuits. How many short-bre
Aleksandr [31]

Answer:

32

Step-by-step explanation:

There are 80 biscuits inside the tin.

Also, they said that those biscuits are in the ratio

Short bread    :      Choc - chip

          2          :        3

Altogether there are 5 shares ( 2 + 3)

And now you can divide 80 by 5 to find how many biscuits contain per a share.

80 ÷ 5 = 16

In the question, they asked us to to find the number of short biscuits inside the tin.

Let us find that.

There are 2 shares for short bread biscuits.

So,

Number of short biscuits ⇒ 2 × 16

                                         ⇒ 32

Hope this helps you :-)

5 0
3 years ago
What is the simplification of (-2x+4) + 2(2x+1)
melomori [17]
(-2x+4)+2(2x+1)= -2(-x-3)
4 0
3 years ago
XY is the diameter of a semicircle. XY is of length 10.2cm.
Sergeu [11.5K]

easy, u have to do

10.2 cm - 5.9 cm

and that will equal 4.3

hope that helped! :]

5 0
3 years ago
Read 2 more answers
Klay is driving to visit his family in another town. It is 386 miles. If his car will go 18 miles per gallon, how many gallons w
Alexus [3.1K]
It is going to 21 because when you is divid 386÷18=21and you don't have 21 up there either I did it wrong or you do not have up there bc you missed up
7 0
3 years ago
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