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seropon [69]
2 years ago
14

A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour, wha

t was the percent error in this measurement?
Mathematics
2 answers:
zimovet [89]2 years ago
5 0

Answer:

.998%

Step-by-step explanation:

102.8/103 = .9980582524

IgorC [24]2 years ago
5 0

Answer:

The percent error in this measurement is 0.194%.

Step-by-step explanation:

Given : A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour.

To find : What was the percent error in this measurement?

Solution :

The actual speed is 103 miles per hour.

The estimated speed is 102.8 miles per hour.

The percentage is given by,

\text{Percentage}=\frac{\text{Actual-Estimated}}{\text{Actual}}\times 100

\text{Percentage}=\frac{103-102.8}{102.8}\times 100

\text{Percentage}=\frac{0.2}{102.8}\times 100

\text{Percentage}=0.194\%

Therefore, the percent error in this measurement is 0.194%.

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1.5r-3r+8r+2.5r=<br> please show me what the equation is in simplest form thanks
sladkih [1.3K]

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12.5r

Step-by-step explanation:

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7 0
2 years ago
Jan accidentally ran 7 minutes longer than she was supposed to. Write an expression for the total amount of time Jan ran if she
vovangra [49]

Answer:

m+7

Step-by-step explanation:

If she ran 7 minutes longer and m represents the amount of time she ran, then it would just be addition.

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6 0
2 years ago
The infield of a baseball field is a square
AnnZ [28]

Answer:

  106.1 ft/s

Step-by-step explanation:

You know the diagonal of a square is √2 times the length of one side, so the distance from 3rd to 1st is 90√2 feet ≈ 127.2792 ft.

The speed is the ratio of distance to time:

  speed = distance/time = 127.2972 ft/(1.2 s) ≈ 106.1 ft/s.

_____

In case you have never figured or seen the computation of the diagonal of a square (the hypotenuse of an isosceles right triangle), consider the square with side lengths 1. The diagonal will cut the square into halves that are isosceles right triangles with leg lengths 1. Then the Pythagorean theorem can be used to find the diagonal length d:

  d² = 1² + 1²

  d² = 2

  d = √2

Since this is the diagonal for a side length of 1, any other side length will serve as a scale factor for this value. A square with a side length of 90 ft will have a diagonal measuring 90√2 ft.

7 0
2 years ago
Solve 5x + 14 = k for x. A. B. x = k – 14 C. x = 5k – 14 D.
wariber [46]
4x + 14 = k

Do the opposite of PEMDAS
Isolate the x, subtract 14 from both sides
4x + 14 (-14) = k (-14)

4x = k - 14
divide 4 from both sides
4x/4 = (k-14)/4

x = (k-14)/4 is your answer

hope this helps
5 0
2 years ago
Read 2 more answers
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