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Reptile [31]
2 years ago
15

PLS HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS!

Mathematics
1 answer:
iogann1982 [59]2 years ago
5 0

Answer:

x ≥ 8

(x = 8, 9, or 10)

Step-by-step explanation:

mean = [sum of terms]/[number of terms]

7.5 ≤ (8 + 7 + 5 + 9 + 10 + 7 + 6 + x)/8

7.5 ≤ (52 + x)/8

60 ≤ (52 + x)

8 ≤ x OR

x ≥ 8 OR

x = 8, 9, or 10

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dolphi86 [110]
Answer: Choice C
7 divided by cosec 50 degrees

=====================================

Explanation:

Abbreviations:
sec = secant
cot = cotangent
cosec = cosecant (csc is also a widely used abbreviation)

-----------------

Let the horizontal leg be x

This leg is opposite the angle 50 degrees. The hypotenuse is 7

Opposite = x
Hypotenuse = 7

We'll either use the sine rule or the cosecant (csc) rule
sine = opposite/hypotenuse
cosecant = hypotenuse/opposite

Since "sine" is nowhere to be found in the answer choices, we'll use the cosecant rule

-----------

cosecant = hypotenuse/opposite
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