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Aneli [31]
2 years ago
15

PLEASE HELP PLEASEEEE!! 100 PTS!

Mathematics
2 answers:
Slav-nsk [51]2 years ago
8 0
You have to use different identities to solve it, if you have a question about how I did a specific step just ask :)

Gre4nikov [31]2 years ago
6 0

Answer:

R

H

S

=  cos

2

x

Step-by-step explanation:

Hope this helped!

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Special right triangle
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

6) taking 45 degrees as the reference angle,

the adjacent side is √6

The opposite side is x

The hypotenuse is y

Therefore, we would apply trigonometric ratio.

Tan # = opposite side / adjacent side

Tan 45 = x/√6

1 = x/√6

x = 1 × √6 = √6

Cos # = adjacent side/hypotenuse

Cos 45 = √6/y

Cos 45 expressed in surd form is √2/2. Therefore,

√2/2 = √6/y

y √2 = 2√6

y = (2√6)/√2

5 0
3 years ago
A geologist visits 40 volcanoes in Alaska and California. 15% of the volcanoes are in California.
kotegsom [21]

Answer:

<h2>Most explained:</h2>

40% = 100%

15 = (100% - 15% = 85%) 85% in Alaska

California = 15% of 40 = (0.15 x 40) = 6

Alaska = 85% of 40 = (0.85 x 40) = 34

<h2>The simple way (or the way i found it simple):</h2>

<h3>40 - 15 = 34</h3><h3>15% of 40 = 6</h3>

<h3>(I found the simple way after i solve the first way)</h3>

Bye, i hope this helps.

<h3 />

3 0
3 years ago
The data to represent average test scores for a class of 16 students includes an outlier value of 78. If the mean, including the
mestny [16]

Answer:

Step-by-step explanation:

Given that The data to represent average test scores for a class of 16 students includes an outlier value of 78.

We can find sum of all 16 test scores = 84(16) = 1344

Outlier found = 78

If outlier is removed new sum = 1344-78 = 1266

Number of entries without outlier = 15

New average = 1266/12 =84.4

We find that average of new data increases.

Also whenever we remove outlier std deviation also would be reduced.

7 0
3 years ago
Read 2 more answers
(1 point) find the area of the triangle in the plane with vertices (1,4)(1,4), (5,5)(5,5), and (−2,9)(−2,9)
Nata [24]
Please, see the offered solution, note, there are 2 ways in it (a and b)

4 0
4 years ago
Sam bought 86 pounds of flour for his bakery. Every day he used the same amount of flour to make bakery items. After 10 days, Sa
hram777 [196]

86-25.2 = 60.8 pounds of flour used

60.8/10 = 6.08 pounds used per day

5 0
4 years ago
Read 2 more answers
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