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lesya [120]
3 years ago
13

HELP PLEASE ASAP! BRAINLIESTTTTTTTTT

Mathematics
1 answer:
guapka [62]3 years ago
6 0
A fairly strong positive correlation.
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State whether the two triangles below are congruent?<br> B<br> А<br> С<br> Q<br> S<br> R
tamaranim1 [39]

Answer:

Congruent

Step-by-step explanation:

There are 2 angles and a side that are congruent in both triangles. Therefore, they are congruent through AAS.

5 0
2 years ago
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Algebra method 4x - 6 = 30
antiseptic1488 [7]

Answer: The answer is x=9

(PLEASE VOTE ME BRAINLIEST. I NEED TO LEVEL UP LOL)

6 0
3 years ago
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Solve the equation for all real values of x.<br> cosxtanx - 2 cos x=-1
IceJOKER [234]

Solution to equationcosxtanx - 2 cos^2 x=-1 for all real values of x is  x=2k\pi + \frac{\pi}{6}  , x=2k\pi + \frac{5\pi}{6} .

<u>Step-by-step explanation:</u>

Here we have , cosxtanx - 2 cos^2 x=-1. Let's solve :

⇒  cosxtanx - 2 cos^2 x=-1

⇒  cosx(\frac{sinx}{cosx}) - 2 cos^2 x=-1

⇒  sinx = 2 cos^2 x-1

⇒  sinx = 2 (1-sin^2x)-1

⇒  sinx = 1-2sin^2x

⇒  2sin^2x+sinx-1=0

By quadratic formula :

⇒ sinx = \frac{-b \pm \sqrt{b^2-4ac} }{2a}

⇒ sinx = \frac{-1 \pm \sqrt{1^2-4(2)(-1)} }{2(2)}

⇒ sinx = \frac{-1 \pm3}{4}

⇒ sinx = \frac{1}{2} , sinx =-1

⇒ sinx = sin\frac{\pi}{6} , sinx = sin\frac{3\pi}{2}

⇒ x=\frac{\pi}{6} , x=\frac{3\pi}{2}

But at x=\frac{3\pi}{2} we have equation undefined as cos\frac{3\pi}{2}=0 . Hence only solution is :

⇒ x=\frac{\pi}{6}

Since , sin(\pi -x)=sinx

⇒ x=\pi -\frac{\pi}{6} = \frac{5\pi}{6}

Now , General Solution is given by :

⇒ x=2k\pi + \frac{\pi}{6}  , x=2k\pi + \frac{5\pi}{6}

Therefore , Solution to equationcosxtanx - 2 cos^2 x=-1 for all real values of x is  x=2k\pi + \frac{\pi}{6}  , x=2k\pi + \frac{5\pi}{6} .

3 0
3 years ago
Help please, im dum-
serious [3.7K]

Answer:

D. I would say D.

Step-by-step explanation:

mark me brainiest

pls and ty

hope this helps!

have a nice day!

<u><em>QUEENOFTARUS </em></u><u>♉</u>

8 0
2 years ago
Calculate the length of the line segment. round your answer to the nearest tenth.
Sunny_sXe [5.5K]

Answer:

c) 8.6

Step-by-step explanation:

Take the coordinates of the two points.

(0,8) and (7,3)

Formula:

√(x₁ - x₂)² + (y₁ - y₂)²

Substitute:

√(0 - 7)² + (8 - 3)²

√(-7)² + (5)²

√(49) + (25)

√(74) ≈ 8.6

8 0
3 years ago
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