Answer:percent error in Joey's measurement to the nearest 10th of a percent =- 4.6%
Step-by-step explanation:
Step 1
Time as recorded by the stopwatch = 4.82 seconds
Real Time it takes for a Frisbee to fly through the air =5.05 seconds
percent error = Measured value – True Value /True value x 100.
= 4.82 - 5.05 / 5.05 x 100
=-0.23/5.05
=-0.0455 x 100
=4.5544%
Rounding to nearest 10th of a percent = - 4.6%
Anthony ran 5.5 miles each day after school
Let x represent the amount of mile he covered at the park after school. Since he ran 1.5 miles each day before school, the total distance covered each day is:
Total distance covered each day = Distance ran before school + Distance ran after school
Total distance covered each day = 1.5 + x
Since he ran for 4 days in a week, hence:
Total distance ran in a week = 4 days × (1.5 + x)
Total distance ran in a week = 4x + 6
But at the end of the week he ran 28 miles, hence:
4x + 6 = 28
4x = 22
x = 5.5 miles
Hence Anthony ran 5.5 miles each day after school
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Answer:
The diameter of the wheel is 32 centimeters
Step-by-step explanation:
we know that
The <u><em>intersecting chords theorem</em></u> states that the products of the lengths of the line segments on each chord are equal.
so
In this problem
substitute the given values
solve for x
Remember that
LK goes through the center of the wheel
That means----> LK is a diameter
therefore
The diameter of the wheel is 32 centimeters
Answer:
-2+sqrt(3)
Step-by-step explanation:
When cos(angle)=sqrt(3)/2
then sin(of that angle)= + or - 1/2 depending on the quadrant
Anyways 330 degrees is in the 4 quadrant. Cosine is positive there while sine is negative.
so sin(330)=-1/2
Formula for tan(x/2)=(1-cos(x))/sin(x)
Therefore tan(165)=tan(330/2)=(1-cos(330))/sin(330)=(1-sqrt(3)/2)/(-1/2)
Multiply top and bottom by 2 to get
tan(165)=(2-sqrt(3))/-1
tan(165)=-2+sqrt(3)
Answer:
about 1.18 is the closest is what i got
Step-by-step explanation:
