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marissa [1.9K]
3 years ago
9

Joshua uses his thermometer and finds the boiling point of ethyl alcohol to be 75o C. He looks in a reference book and finds tha

t the actual boiling point of ethyl alcohol is 80oC. What is his percent error?
Mathematics
2 answers:
Crazy boy [7]3 years ago
5 0

Answer:

the percent error is 6.25%

Step-by-step explanation:

The computation of the percent error is shown below:

Percent error is

= (Experimental value - accepted value) ÷ (experimental value) × 100

= (80 degrees - 75 degrees) ÷ (80 degrees) × 100

= (5 degrees) ÷ (80 degrees) × 100

= 0.0625 × 100

= 6.25%

hence, the percent error is 6.25%

We simply applied the above formula so that the correct value could come

And, the same is to be considered

Mekhanik [1.2K]3 years ago
5 0

Answer:

6.25

Step-by-step explanation:

I just did this

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Find the average rate of change for the function, f(x) = -3x2 + 2x - 5 over the interval -3 < x < 3.
aev [14]

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18

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4 0
2 years ago
2
igomit [66]

Answer:

x = 1/10

Step-by-step explanation:

2/x -2 = 3/2x +3

Add 2 to each side

2/x -2+2 = 3/2x +3+2

2/x = 3 /2x  +5

Subtract 3/2x from each side

2/x  -3/2x = 3 /2x - 3/2x  +5

2/x  - 3/2x = 5

Get a common denominator

2/x *2/2  -3/2x =5

4/2x  - 3/2x = 5

1/2x =5

Multiply each side by 2x

1 /2x * 2x = 5 *2x

1 = 10x

Divide each side by 10

1/10 = 10x/10

1/10 =x

4 0
3 years ago
Two angels are supplementary. The measure of the large angle is four more than three times the measure of the small angle. Find
sashaice [31]

Answer:

The measure of the two supplementary angles is

Small angle = x = 44°

Large angle = y = 136

Step-by-step explanation:

Supplementary angles are two angles whose measures add up to 180° .

Let

Small angle = x

Large angle = y

x + y = 180°.... Equation 1

The measure of the large angle is four more than three times the measure of the small angle

Hence: y = 4 + 3x

We substitute 4 + 3x for y in Equation 1

x + 4 + 3x = 180°

4x + 4 = 180°

4x = 180° - 4

4x = 176

x = 176/4

x = 44°

Solve for y

y = 4 + 3x

y = 4 + 3(44)

y = 4 + 132

y = 136°

Therefore, the measure of the two supplementary angles is

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Large angle = y = 136

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3 years ago
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Negative correlation

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