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ale4655 [162]
1 year ago
13

HELP!!! 31) Find the measure of line segment DF. A) 12 B) 13 C) 14 D) 15

Mathematics
1 answer:
oksian1 [2.3K]1 year ago
6 0

Step-by-step explanation:

for the relationship of lengths of internal chords the product of both segments of a chord is equal for all intersecting chords.

in our case

(x+8)×8 = 7×16 = 112

8x + 64 = 112

8x = 48

x = 6

so, D-F = x + 8 = 6 + 8 = 14

so, C is correct

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In your biology class, your nal grade is based on several things: a lab score, scores on two major tests, and your score on the
Mariana [72]

Complete Question

In your biology class, your final  grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of your total grade, each major test is worth 22:5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 81 on the first major test, 93 on the second major test, and 85 on the final exam. (Enter your answer to one decimal place)

Answer:

The weighted average is  W = 87.65

Step-by-step explanation:

From the question we are told that

  The worth of the lab score is  25% of total grade

  The worth of each major  test is   22.5% of total grade

   The worth of final exam is  30% of total grade

The  score on lab is  92

The score on first major test 81

The score on second major test 93

 The score on final  exam is  85

Generally the weighted score is mathematically represented as

     W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 87.65

   

   

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Answer:

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Step-by-step explanation:

3 0
2 years ago
WILL GIVE BRAINLIEST
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Answere:

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Step-by-step explanation:

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Help pls for 100 points!!!
Rus_ich [418]

Answer:

x\leq 9

Step-by-step explanation:

Subtract 7 From both sides

x+7-7\le \:16-7

      7-7 = 0,  16 - 7=9

That leaves  x \leq  9

Hope this helps

~R3V0

8 0
3 years ago
Read 2 more answers
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