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Orlov [11]
3 years ago
15

In circle A, marc BC is 71° and marc EF is 78°: Points B, C, E, and F lie on Circle A. Lines BE and CF pass through point D, cre

ating angle EDF. The measure of arc BC is 71 degrees, and the measure of arc EF is 78 degrees. What is m∠FDE? 35.5° 74.5° 39° 78°
Mathematics
1 answer:
jasenka [17]3 years ago
5 0

Answer:

74.5

Step-by-step explanation:

Since the angles are not on the center of the circle, we use this formula:

71+78/2= 74.5

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Since 2.5% as a decimal is .025, the equation to get this is:

(.025)(80000)

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A scale on a map shows that 2 inches equals 25 miles. How many miles is represented by 1/4 inch on the map?
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PLEASE helppp. What equation describes a line that is perpendicular y=-2/7x+5 and has the same y-intercept as y = 3x - 2?
svp [43]

Answer:

y = 7/2 -2

Step-by-step explanation:

if the slope of the first problem is -2/7 then its perpendicular is 7/2 (the exact opposite) and since the y- intercept is the b in Y= mx +b the intercept of the equation you’re trying to find is -2

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Snezhnost [94]
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3 years ago
What values of k will make the line containing points (k,3) and (-2,1) parallel to the line through (5, K) and (1,0)
rjkz [21]

Answer:

k = -4 or 2

Step-by-step explanation:

For the lines to be parallel, the lines would need to be the same slope. This means to find the slope of each we would take the difference of the rise over the run.

\frac{1-3}{-2-k}=\frac{-2}{-2-k}

and

\frac{0-k}{1-5}=\frac{-k}{-4}

To find K, set them equal.

\frac{-2}{-2-k} = \frac{-k}{-4}\\-k(-2-k) = -2*-4\\2k+k^2=8\\k^2+2k-8=0

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3 years ago
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