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8090 [49]
2 years ago
8

Logan measured a line to be 7.4 inches long. If the actual length of the line is 7.7 inches, then what was the percent error of

the measurement, to the nearest tenth of a percent?​
Mathematics
2 answers:
algol132 years ago
8 0

Answer:

3.9%

Step-by-step explanation:

Percentage error

=  \frac{7.7 - 7.4}{7.7}  \times 100 \\  \\  =  \frac{0.3}{7.7}  \times 100 \\  \\   =  \frac{300}{77}  \\  \\  = 3.8961039    \\  \\  = 3.9 \%

kirill [66]2 years ago
8 0
I think it’s 3.8% i’m not sure tho
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After 5 years, a $2,450 investment is worth $3,123.75.
kondaur [170]

Answer:

5.5%

Step-by-step explanation:

To solve this problem we can use a modified version of the simple interest formula which is shown below:

r=\frac{I}{Pt}

<em>I = interest amount</em>

<em>P = principal amount</em>

<em>t = time (years)</em>

<em />

The first step is to find the interest gained from the investment.

3,123.75-2,450=673.75

Next, plug in the values into the equation:

r=\frac{673.75}{(2,450)(5)}     Multiply the bottom values

r=\frac{673.75}{12,550}         Divide the values

r=.055

The last step is to convert 0.055 into a percent:

0.055(100)=5.5

The interest rate is 5.5%

3 0
3 years ago
Is it okay to switch -3 = x - 5 to become -3 = 5 - x?
Zepler [3.9K]

Answer:

No, those are not the same.

Step-by-step explanation:

Assuming x=2,

-3=2-5 is not the same as -3=5-2

5 0
3 years ago
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Using the table, which value from the domain corresponds to a range value of 3?
ozzi
We know that

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</span>
8 0
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