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Vaselesa [24]
3 years ago
10

Cos() = O A. V B. 173 2 OC. OD. -3

Mathematics
1 answer:
irga5000 [103]3 years ago
7 0

Answer:

-√3/2

Step-by-step explanation:

Given the expression:

Cos(7π/6)

Conver to degrees

=  Cos(7(180)/6)

= cos 210

= -√3/2

Hence the value of cos(7π/6) is -√3/2

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Eunice wanted to save up for a mountain bike that costs £250. She baby-sits each week for 6 hours for £2.75 an hour, and does a
choli [55]

Answer:

Approximately 2 weeks

Step-by-step explanation:

Given data

Cost of bike=  £250

<em>Assuming she works for 6 days</em>

1.Babysitting

6*2.75=£16.5 per day

for 6 days

=16.5*6

=£99

2. Saturday Job

=£27.50

Total earnings for the week

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=£126.5 weekly

Hence it will take her

=250/126.5

=1.97 week

Approximately 2 weeks to save up the amount

3 0
3 years ago
Which are the solutions of x2 = –5x + 8? SOLUTIONs ok not a single answer i need to know its opposite
AlekseyPX

Answer:

I think it is -5+root-7/2 & -5-root-7/2

Step-by-step explanation:


5 0
4 years ago
A card game is played in which the player wins if a face card is drawn​ (king, queen,​ jack) from a deck of 52 cards. If the pla
Over [174]

Answer:

The expected number of wins for the​ player is 2.31

Step-by-step explanation:

No. of face cards = 12

total cards = 52

Probability of getting face card = \frac{\text{No. of face cards}}{\text{Total No. of cards}}

Probability of getting face card = \frac{12}{52}

The player plays 10​ times

Formula : E=np

n = no. of trials = 10

p = probability of success= \frac{12}{52}

E=expected number of wins

E=10(\frac{12}{52})

E=2.307

So,  the expected number of wins for the​ player is 2.31

5 0
3 years ago
Select the correct answer.<br> Which of the following is the inverse of ?
Lunna [17]

Answer:

the answer is letter C.

5 0
3 years ago
P - 3 1/6 = -2 1/2<br> what is p?
goldfiish [28.3K]
<span>P - 3 1/6 = -2 1/2

3 1/6- 21/2 

p=2/3 </span>
7 0
3 years ago
Read 2 more answers
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