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lilavasa [31]
3 years ago
5

10) Will mark BRAINLIEST + 10 POINTS :)

Mathematics
2 answers:
GaryK [48]3 years ago
5 0
The answer is A.
(sqrt(6)+sqrt(2))/4

You can solve this using the unit circle, or simply enter cos(pi/12) into your calculator then type those possible answers into your calculator and see which answer equals the same as cos(pi/12).
Mariana [72]3 years ago
4 0
Answer is A.

√6 + √2
----------
     4
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Linear equation <br><br> 4.5 + 1.5y=24<br> x-y=4
WARRIOR [948]
4.5x + 1.5y = 24 ⇒ 4.5x + 1.5y = 24
1.0x -  1.0y = 4   ⇒<u> 4.5x - 4.5y = 18</u>
                                             <u>6y</u> = <u>6</u>
                                              6     6
                                               y = 1
                             4.5x + 1.5(1) = 24
                                 4.5x + 1.5 = 24
                                 <u>         - 1.5    - 1.5</u>
                                          <u>4.5x</u> = <u>22.5</u>
                                           4.5      4.5
                                               x = 5
                                          (x, y) = (5, 1)
8 0
3 years ago
Determine the intervals on which the function is increasing, decreasing and constant
viva [34]

Answer:

  • increasing: (-∞, 0)
  • decreasing: (0, ∞)

Step-by-step explanation:

The function goes up to the right until it gets to the vertex at x=0. Then it goes down to the right. That is, it is ...

  increasing from -∞ to 0 (not including 0)

  decreasing from 0 to +∞ (not including 0)

_____

At x=0, the function is neither increasing nor decreasing, so x=0 is not part of either interval.

6 0
3 years ago
Which set of angles could be the interior angles of a triangle? O A. 10° 20°, and 60° B. 20°. 20°, and 50° C. 209.30'. and 50° D
oee [108]
Answer is D because it adds to 180
7 0
3 years ago
two angles are supplementary one angle measures 75% more than twice the measure of the other what are the measurement of the two
valkas [14]
Let's call the angles x and y. We know that supplementary angles must add to 180 degrees, so x+y=180.

Furthermore, we know that x is 75% more than 2y. We can write "75% more than" numerically as 1.75, so x = 1.75(2y).

We can simplify the second equation by multiplying 1.75 and 2 together to get x = 3.5y.

Now we can solve the system of equations by substitution by plugging 3.5y in for x in x+y=180.

(3.5y) + y = 180

Combine like terms.

4.5y = 180

Divide by 4.5

y = 40

Plug y = 40 in and solve for x.

x + 40 = 180

x = 140

The answer is 40 and 140. Hope this helps :)
3 0
3 years ago
1.12 divided by 8.2 equals
AleksandrR [38]
It equals 0.1365853659
you may round as needed
7 0
3 years ago
Read 2 more answers
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