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GREYUIT [131]
2 years ago
10

Pls help me on this.............​

Mathematics
1 answer:
ahrayia [7]2 years ago
8 0

Answer:

12.85

Step-by-step explanation:

75.00-21.95-23.42-16.75=12.85

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Juan is going to flip a coin 2 times. What is the fractional probability that it will be two heads
sertanlavr [38]

Answer:

The fractional probability of getting 2 heads is 1/4.

4 0
3 years ago
Root 3 cosec140° - sec140°=4<br>prove that<br><br>​
Lorico [155]

Answer:

Step-by-step explanation:

We are to show that \sqrt{3} cosec140^{0} - sec140^{0} = 4\\

<u>Proof:</u>

From trigonometry identity;

cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}

\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\

From trigonometry, 2sinAcosA = Sin2A

= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\=  \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\=  \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2  \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

\frac{4(sin(420-140)) }{sin280}

= \frac{4sin280}{sin280}\\ = 4 \ Proved!

3 0
3 years ago
What is the answer to 2 + -1/3 =
Helga [31]
The answer is : 1:6 repeating
4 0
3 years ago
Whoever gets this right gets brainlyess answer and it's worth 10 points :)
Lunna [17]
60% = 0.6
12 / 0.6 = 20

answer 12 is 60% of 20

8 0
3 years ago
A worker's earnings e are a function of the number of hours n worked at a rate of 8.75 per hour
andrew11 [14]
E=8.75*n ............................................................................................................................................
3 0
3 years ago
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