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Dvinal [7]
3 years ago
9

Efficiency is the ratio of output work to input work, expressed as a percentage. Light bulbs put out less light energy than the

amount of electrical energy that is put into the bulb. An illustration of a wide arrow with a light bulb at the tail of it labeled electrical energy 100 J, breaks into a small arrow going forward labeled light 10 J and a larger curling away labeled heat 90 J. The goal of the bulb is to produce light. What is the efficiency of this bulb as it works to put out light? 10% 80% 90% 100%
Mathematics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

  10%

Step-by-step explanation:

Using the given formula with the given data, we have ...

  efficiency = output work / input work

  = (10 J)/(100 J) = 0.10 = 10%

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4% of the 200 pills failed to retain full potency after 60 days.
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3 years ago
Which shows the number 27 factored into prime numbers?   A. 2 · 3 · 3   B. 1 · 3 · 3 · 3   C. 3 · 3 · 3   D. 3 · 9
Vilka [71]

Hi!

<h3>To find the prime factorization of a number, keep dividing by the smallest factor that goes into it. </h3>

27/3 = 9

9/3 = 3

3/3 = 1

<u>3 · 3 · 3 = 27</u>

<h2>The answer is C. 3 · 3 · 3</h2>

Hope this helps! :)

-Peredhel

8 0
3 years ago
Please help me with this. I give brainliest and give ratings. Don't answer just to take my points or your getting reported
lesantik [10]

Answer:

by 3/4ftmrs torrer is shorter than her husband

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4 0
3 years ago
What is an equation of the line that passes through the points (4,-1) and (8,5)?
fiasKO [112]

Answer:

y=3/2x-7

Step-by-step explanation:

the equation of the line for slope-intercept form is y=mx+b, where  m is the slope and b is the y intercept.

we are given two points: (4,-1) and (8,5)

the equation for slope is (y2-y1)/(x2-x1)

label the points:

x1=4

y1=-1

x2=8

y2=5

now substitute into the equation:

m=(5--1)/(8-4)

m=6/4

m=3/2

the slope of the line is 3/2

here is our equation so far:

y=3/2x+b

we need to find b

since the equation will pass through the points, we can substitute either one into the equation to find b

let's use (4,-1) as an example

substitute into the equation

-1=3/2(4)+b

-1=6+b

-7=b

the y intercept is -7

so the equation is y=3/2x-7

hope this helps!

8 0
3 years ago
The equations of three lines are given below.
Anna11 [10]

Answer:

Step-by-step explanation:

Line 1

y= 3/2x +7/2  m = 3/2

Line 2

4x-6y+2 = 0  m = 2/3

Line 3

y = 3/2x - 4   m = 3/2

Line 1 and Line 2 = neither

Line 1 and Line 3 = parallel

Line 2 and Line 3 = neither

4 0
3 years ago
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