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FromTheMoon [43]
3 years ago
6

HELP ASAP!!

Mathematics
2 answers:
MariettaO [177]3 years ago
8 0
0, 0 there you go have a nice day
GuDViN [60]3 years ago
7 0

Step-by-step explanation:

Xm = (-3+3)/2 = 0/2 = 0

Ym = (2-2)/2 = 0/2 =0

so, the midpoint (Xm, Ym) is (0 , 0)

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Solve 2cos ²y -siny -1=0 for 0° ≤y≤360°
natima [27]

 

\displaystyle\bf\\2cos^2y -sin\,y -1=0~~~for~~0^o\leq y \leq360^o\\\\cos^2y=1-sin^2y\\\\2(1-sin^2y) -sin\,y -1=0\\\\2-2sin^2y-sin\,y-1=0\\\\-2sin^2y-sin\,y+2-1=0\\\\-2sin^2y-sin\,y+1=0~~~\Big|\times(-1)\\\\2sin^2y+sin\,y-1=0

.

\displaystyle\bf\\\boxed{\bf sin\,y=x}\\\\2x^2+x-1=0\\\\x_{12}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-1\pm\sqrt{1-4\cdot2\cdot(-1)}}{2\cdot2}=\\\\=\frac{-1\pm\sqrt{1+8}}{4}=\frac{-1\pm\sqrt{9}}{4}=\frac{-1\pm3}{4}\\\\x_1=\frac{-1+3}{4}=\frac{2}{4}=\boxed{\bf\frac{1}{2}}\\\\x_2=\frac{-1-3}{4}=\frac{-4}{4}=\boxed{\bf-1}\\\\sin\,y=\frac{1}{2}\\\\\boxed{\bf y_1=\frac{\pi}{6}~~or~~(30^o)}\\\\\boxed{\bf y_2=\frac{5\pi}{6}~~or~~(150^o)}\\\\sin\,y=-1\\\\\boxed{\bf y_3=\frac{3\pi}{2}~~or~~(270^o)}

 

 

5 0
3 years ago
Find the area of each triangle to the nearest tenth
kifflom [539]
The answer is 4,8 and the thin
3 0
3 years ago
Read 2 more answers
The function f(x) represents the time it takes an airplane to travel east. The function g(x) represents the time it takes an air
tensa zangetsu [6.8K]

The total time taken for round trip will be: (f+g)(x) = 14x+11

Step-by-step explanation:

Given

f(x) = 4x+13\\g(x) = 10x-2

In order to find the round-trip time, we have to add both functions to represent the time taken to travel east and the time taken to travel to west.

(f+g)(x) = f(x)+g(x)\\= (4x+13)+(10x-2)\\=4x+13+10x-2\\=4x+10x+13-2\\=14x+11

Hence,

The total time taken for round trip will be: (f+g)(x) = 14x+11

Keywords: Functions, variables

Learn more about functions at:

  • brainly.com/question/663692
  • brainly.com/question/6569012

#LearnwithBrainly

6 0
3 years ago
Can someone please helppp
kolezko [41]

Answer:

x=-11

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
How to do this please help
shutvik [7]

Answer:

\frac{1}{9} feet³

Step-by-step explanation:

\frac{1}{3}×\frac{2}{3}×\frac{1}{2}=\frac{2}{18}=\frac{1}{9}

4 0
3 years ago
Read 2 more answers
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