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Gnoma [55]
2 years ago
15

What is the area of the parallelogram? 4cm 5cm 9cm

Mathematics
1 answer:
hammer [34]2 years ago
7 0

Answer: Incomplete question, please edit.

Step-by-step explanation:

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(3cosx-4sinx) + (3sinx+4cosx) = 5
Ksenya-84 [330]
(3 cos x-4 sin x)+(3sin x+4 cos x)=5
(3cos x+4cos x)+(-4sin x+3 sin x)=5
7 cos x-sin x=5
7cos x=5+sin x
(7 cos x)²=(5+sinx)²
49 cos²x=25+10 sinx+sin²x
49(1-sin²x)=25+10 sinx+sin²x
49-49sin²x=25+10sinx+sin²x
50 sin² x+10sinx-24=0

Sin x=[-10⁺₋√(100+4800)]/100=(-10⁺₋70)/100
We have two possible solutions:
sinx =(-10-70)/100=-0.8
x=sin⁻¹ (-0.8)=-53.13º      (360º-53.13º=306.87)

sinx=(-10+70)/100=0.6
x=sin⁻¹ 0.6=36.87º

The solutions when  0≤x≤360º are:  36.87º and 306.87º.


3 0
3 years ago
What is the sin inverse of (sine 9pi/7)?
Sveta_85 [38]
For the answer to the question above, I've used my calculator to inverse your given equation because my brain can't do that.
The answer to your question is
In radians, arcsin(sin(9π) / 7) = 0.
 i hope my answer helped you.

7 0
3 years ago
Triangle JKL was dilated with the origin as the center of dilation to create triangle ′′′.J′K′L′. The triangle was dilated using
zmey [24]

Answer:

KL = 5.25

LJ = 6

Step-by-step explanation:

i don’t know the first one

7 0
3 years ago
Another one another one...........
USPshnik [31]

Answer:

B

Hope it helped you out

Tysm

4 0
3 years ago
Please help question #10
elena-s [515]
The scale 3/4 was used
4 0
3 years ago
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