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Artemon [7]
3 years ago
14

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal. cos x - cos x

sinx = cos3 x
Mathematics
2 answers:
dangina [55]3 years ago
4 0
The answer is 0 because 180 degrees does not make a valid statement
Mashutka [201]3 years ago
3 0

Answer:

The answer is pi/4

Step-by-step explanation:

You substitute each x for "pi/4", you will see that the equation is incorrect, the two values are no longer equal.

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James has organised a game to raise money for charity at a local fair. He rolls a fair six sided dice and flips a fair coin. If
Scorpion4ik [409]

The total amount that was raised for charity is £75.

<h3>What is the total amount raised?</h3>

Here is the sample space

                  1               2            3            4            5           6

Heads        1               4            9           16            25        36

Tails           1               8            27          64           125        216

Probability of getting a number greater than 30 = 4/12 = 1/3

1/3 x 450 = 150

Total value of people getting more than 30 : 150 x £1 = £150

Total amount paid = 50 x 450 = £225

Amount raised = £225 - 150 = £75

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

3 0
2 years ago
EXPERT HELP: EXPLAIN THE ANSWER AND DON'T GUESS<br><br> Tell me the mean of each brand
rosijanka [135]

Answer:

D

Step-by-step explanation:

IF you count the dots for each graph, you would see that the minimum for B is Higher than group A's maximum, Therefore, the numbers do not overlap. This means that at a simple glance you can see which company does better.

6 0
3 years ago
2 ways to decompose the number 749
kolezko [41]
Okay. You can decompose 749 with these ways:
700 + 40 + 9
or
500 + 200 + 40 + 9
6 0
3 years ago
At a clothing store, Ted bought 4 shirts and 2 ties for a total price of $95. At the same store, Stephen bought 3 shirts and 3 t
zepelin [54]

Answer:

$19.50

Step-by-step explanation:

We can turn these into equations by making the shirts 's' and the ties 't'.  

4s+2t=95 and 3s+3t=84

Now we can solve the system of equations with substitution.

4 0
3 years ago
PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP ME
Mars2501 [29]

Answer:

A.) 40.506 cm is the answer

7 0
3 years ago
Read 2 more answers
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