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Nikitich [7]
3 years ago
8

3. How many solutions does the system of equations have?

Mathematics
1 answer:
miskamm [114]3 years ago
5 0

Answer:

oof i dont know this

Step-by-step explanation:


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What is the missing fraction 1/16=3/2
drek231 [11]

Answer:

7

Step-by-step explanation:

6 0
3 years ago
Simplify x = cos[2 arcsin(3/5)].<br><br> -7/25<br> 7/25<br> 4/5
Marina CMI [18]

Answer:

7/25

Step-by-step explanation:

Let \theta= \arcsin(\frac{3}{5}) so we have x=\cos(2\theta)

As \cos(2\theta)=\cos^2\theta-\sin^2\theta, we'll have \cos[2\arcsin(\frac{3}{5})]=\bigr[\cos(\arcsin(\frac{3}{5}))\bigr]^2-\bigr[(\sin(\arcsin(\frac{3}{5}))\bigr]^2

To determine \cos(\arcsin(\frac{3}{5})), construct a right triangle with an opposite side of 3 and a hypotenuse of 5. This is because since \theta=\arcsin(\frac{3}{5}), then \sin\theta=\frac{3}{5}=\frac{\text{Opposite}}{\text{Hypotenuse}}. If you recognize the Pythagorean Triple 3-4-5, you can figure out that the adjacent side is 4, and thus, \cos\theta=\frac{4}{5}=\frac{\text{Adjacent}}{\text{Hypotenuse}}. This means that \cos(\arcsin(\frac{3}{5}))=\frac{4}{5}.

Hence, \cos[2\arcsin(\frac{3}{5})]=(\frac{4}{5})^2-(\frac{3}{5})^2=\frac{16}{25}-\frac{9}{25}=\frac{7}{25}

5 0
2 years ago
Which of the following is an example of natural selection?
SVETLANKA909090 [29]

Answer:

A) Hummingbirds drinking nectar from a plant.

Step-by-step explanation:

Here are some examples of natural selection: In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs.

4 0
3 years ago
80000 times 60 plus 89
snow_lady [41]

Answer:

4,800,089

Step-by-step explanation:

You must multiply 80000 by 60 first, which an easy way to solve is multiply 8 by 6 and then add the amount of zeroes in both of those numbers so 48, and then 5 zeroes. So 4,800,000. Then you want to add 89.

3 0
3 years ago
PLEASE HELP ASAP! Will give BRAINLIEST! Please answer correctly!<br> No guessing!
jeka94

Answer:

A) 9

Step-by-step explanation:

f(2) is basically asking what the y-coordinate is at x = 2

If you trace x = 2, you see it intersects f(x) at (2, 9).

4 0
3 years ago
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