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Anastaziya [24]
3 years ago
14

Omar wants to determine cos(- (2pi)/3) using the ratios of the 30 degrees - 60 degrees - 90 degrees right triangle . How shoulc

he use this information to determine cos(- (2pi)/7)
Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:use the reference angle if a 30°and the fact that -2pi/3 is in the 3rd quadrant to determine coz

Step-by-step explanation:

i dont know if this is right just an educational guess, came here looking for the answer but couldn’t find it so

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You are riding a roller coaster when a shoe falls off your foot. The function y=300−16t2 represents the height y (in feet) of th
Juli2301 [7.4K]

Answer:

Time to land on 11ft is 4.25 seconds

Step-by-step explanation:

Given

y = 300 - 16t^2

Required

Solve for t when height is 11ft

This implies that y = 11

So: substitute 11 for y in y = 300 - 16t^2

11 = 300 - 16t^2

Collect Like Terms

16t^2 = 300 - 11

16t^2 = 289

Express both sides as squares

4^2 * t^2 = 17^2

(4t)^2 = 17^2

Take square roots of both sides (ignore negative)

4t = 17

Solve for t

t = \frac{17}{4}

t = 4.25

Hence, time to land on 11ft is 4.25 seconds

8 0
2 years ago
Which statement is TRUE about the best measure of center to use when describing the data set?
Rudik [331]
C because median is all about the middle
5 0
3 years ago
Freddy spent $56.07 on four pairs of jeans at the store. His cost included $4.15 sales tax.
S_A_V [24]
$12.98 each. You would do $56.07 - $4.15. Then divide the answer of that by four.
5 0
3 years ago
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The bill for Jacoby's breakfeast at a Nashville restauraunt is $9. He wants to leave a 20% tip. How much should the tip be?
aleksandrvk [35]

Answer:

$1.80

Step-by-step explanation:

9x0.2=1.80

He should leave 1.80 as a tip.

8 0
2 years ago
• Choose ALL the lines of symmetry for the letter I.
allsm [11]

Answer:

The answer is all of them.

Step-by-step explanation:

All of them can make a line of symmetry for the letter I

Hope this helps

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3 years ago
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