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3 years ago

Please help! Question 7. BRAINLIEST TO CORRECT ANSWER!!!

Mathematics

1 answer:

ale4655 [162]3 years ago

4 0

The answer is D (0,13)

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Answer this question to cheek you knowledge

Anuta_ua [19.1K]

Step-by-step explanation:

hg=4

if correct then can we become friends

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3 years ago

Write a subtraction sentence that you can use to find the length of the side of the polygon between the vertices located at (3,4

max2010maxim [7]

Subtract The x’s and the y’s. 3-3=0, 4-1=3. Thus, the length of this side is 3 units

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2 years ago

You want to draw a sample of people in San Antonio who own 1960s Schwinn Sting-Ray children’s bicycles, a collector’s item. Ther

Anit [1.1K]

Answer:

Snowball Sampling

Step-by-step explanation:

Based on the specific scenario that is being described it can be said that the best type of sampling for you to use would be Snowball Sampling. This is a unique nonprobability sampling technique where subjects for the experiment at hand are recruited from the existing subjects list of acquaintances. Such as in this case it would target all the acquaintances of the Sting-Ray owners.

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3 years ago

I don’t know how to solve this

Lady_Fox [76]

Answer:

$\theta =2\pi k,\ \ k\in Z\ \\\text{or}\ \\\theta=-\dfrac{2\pi}{3}+2\pi k,\ \ k\in Z$

Step-by-step explanation:

Given:

$\cos \theta-\sqrt{3}\sin \theta=1$

Divide this equation by 2:

$\dfrac{1}{2}\cos \theta-\dfrac{\sqrt{3}}{2}\sin \theta=\dfrac{1}{2}$

Note that

$\cos \dfrac{\pi }{3}=\dfrac{1}{2}\\ \\\sin \dfrac{\pi }{3}=\dfrac{\sqrt{3}}{2}$

So, the previous equation is

$\cos \dfrac{\pi}{3}\cdot \cos \theta-\sin \dfrac{\pi}{3}\cdot \sin \theta=\dfrac{1}{2}$

Remind that

$\cos x\cos y-\sin x\sin y=\cos (x+y),$

then

$\cos \left(\dfrac{\pi}{3}+\theta\right)=\dfrac{1}{2}$

The solution of this equation is

$\dfrac{\pi}{3}+\theta=\pm \arccos \dfrac{1}{2}+2\pi k,\ \ k\in Z\\ \\\dfrac{\pi}{3}+\theta=\pm \dfrac{\pi}{3}+2\pi k,\ \ k\in Z\\ \\\theta =2\pi k,\ \ k\in Z\ \text{or}\ \theta=-\dfrac{2\pi}{3}+2\pi k,\ \ k\in Z$

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3 years ago

2. Which of the following (-6, 20), (-9, 1) or (14, 2) ) are a solution to the system of equations?: 2x + y = 8 5x + 2y=10

Leya [2.2K]

(-6, 20)

You can get this through elimination by multiplying the first equation by -2 to get the y values to cancel out.

8 0

3 years ago