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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
You might be interested in
-3c=15 c = __ help plz
LuckyWell [14K]
You would divide negative 3 (-3) from both sides to keep the c by itself. When you divide a positive by a negative it becomes negative.

Dividing 15 by -3 would equal -5, so c = -5
7 0
3 years ago
How many solutions?<br><br> y = 5(x – 4)<br> 4x + 12 = -y
kakasveta [241]

Answer:

One solution, x = 8/9

Step-by-step explanation:

One way to solve this is to take one equation and substitute into the other and then solve. So, take y=5(x-4) and put that into the other equation.

4x + 12 = -y

4x + 12 = -(5(x-4))       <--- substitution here

4x + 12 = -5(x-4)

4x + 12 = -5x + 20     <-- simplifying

4x + 5x = 20 - 12

9x = 8

x = 8/9

4 0
3 years ago
At which x-values are the output values of the floor function g(x) = ?x? and the ceiling function h(x) = ?x? equal? Check all th
ElenaW [278]

Answer:

  -8, 0

Step-by-step explanation:

The floor and ceiling functions have equal values for any integer argument. Their value is that integer.

Among your answer choices, the integers are -8 and 0.

5 0
3 years ago
Can i please have help thanks.
Dmitrij [34]

Answer:

q = 2(3r + 8)

Step-by-step explanation:

There are two variables, q and r in the expression given. To make r the independent variable, it simply means, make q the subject of the formula, so that variable q would be dependent on variable r. As r changes, q changes also.

Thus,

q - 10 = 6(r + 1)

Open the parenthesis

q - 10 = 6r + 6

Add 10 to both sides

q - 10 + 10 = 6r + 6 + 10

q = 6r + 16

q = 2(3r + 8)

4 0
3 years ago
Which table does NOT represent a linear function
topjm [15]

TABLE D does NOT represent a linear function

<h2>Explanation:</h2>

The Table is shown below. Each table is a relationship between two variables, namely x and y. By plotting each table in a graphing tool we get:

TABLE A, FIRST FIGURE:

It is a linear function because we can draw a line that passes through all the points. By using two points, this line has a slope:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\ \\ m=\frac{8-5}{-1-0} \\ \\ m=-3

TABLE C, SECOND FIGURE:

It is a linear function because we can draw a line that passes through all the points. By using two points, this line has a slope:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\ \\ m=\frac{5-10}{-1-0} \\ \\ m=5

TABLE C, THIRD FIGURE:

It is a linear function because we can draw a line that passes through all the points. By using two points, this line has a slope:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\ \\ m=\frac{1-2}{-1-0} \\ \\ m=2

TABLE D, FOURTH FIGURE:

It is not a linear function. It is likely this is a parabola that opens downward.

<h2>Learn more:</h2>

Linear function: brainly.com/question/12560127

#LearnWithBrainly

5 0
3 years ago
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