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Yuki888 [10]
3 years ago
5

Help me please!!!

Mathematics
1 answer:
34kurt3 years ago
3 0

Step-by-step explanation:

sin(2x) + cos(3x)

Use double angle formula sin(2x) = 2 sin x cos x.

Use triple angle formula cos(3x) = 4 cos³x − 3 cos x.

Substitute:

2 sin x cos x + 4 cos³x − 3 cos x

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PLEASE FAST WORTH ALL OF MY GRADE!!
Leno4ka [110]

Answer:

3. Small Farming villages along the Huang He River Valley.

Step-by-step explanation:

The Huang He river is the cradle of Chinese Civilization.

5 0
3 years ago
What is the area of a rectangle with 5/12 foot and 2/3 foot ?
IRINA_888 [86]
C 10/36

Explanation
5x2=10
12x3=36

Ten over 36
7 0
3 years ago
A blogger who is just starting out made three videos. So far, she has 312 subscribers, who watched one, two, or all three videos
grandymaker [24]
Let a, b, c represent the numbers of subscribers who watched 1, 2, and 3 videos, respectively.
.. a +b +c = 312 . . . . . . . there are 312 subscribers, total
.. a +2b +3c = 740 . . . . there were 740 total views

Subtract double the first equation from the second.
.. (a +2b +3c) -2(a +b +c) = (740) -2(312)
.. c -a = 740 -624 = 116

116 more people watched all three videos than watched one video.
7 0
4 years ago
A bedroom has the shape shown. The homeowner is upgrading by putting in new crown molding. How many feet of crown molding does s
Ivahew [28]

Answer: D.

Step-by-step explanation: Add all of the sides' lengths together. The rest of the wall beneath where "5 ft." is measures as 6 ft. Add that to the 5 ft of the rest of the wall and you'll have 11 for  the whole right wall. Add 11 to 8, 10 and 12, and you'll have 41 which is close to the last choice so you're safest bet is D.

6 0
4 years ago
The table represents a function.
34kurt
"Rate of change" is another name for "slope".

In the table, every time 'x' increases by 2, 'y' also increases by 2.
So the rate of change (slope) of the function in the table is

         (change in 'y') / (change in 'x')  =  2/2  =  1  .

The rate of change (slope) in the function  y = x + 4  is
the coefficient (number before) the 'x'.  That's also ' 1 '.

So t<span>he rate of change in the function y = x + 4 is the same as (equal to)
the rate of change of the function represented in the table.</span>
5 0
3 years ago
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