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3 years ago

I need it by tmr ill give brainliest thx

Mathematics

2 answers:

oee [108]3 years ago

6 0

Answer:

3. To tell if something is a function, you have to look at its x values. If the x values are repeating it is not a function. It is okay for the y values to be. Y is the function.

4. x is a function

5. Same thing as 3. So it cant be a or b or c but it is D!

6. function only

Step-by-step explanation:

Ronch [10]3 years ago

3 0

Answer:

3: B

4: D

5: D

6: B

Step-by-step explanation:

3: A function has only one y value per x value, so it can't be W, X, or Z, it has to be Y which is B

4: Vertical line test ensures that every x value only has up to 1 y value.

In W, a vertical line intersects that circle twice

In X, a vertical line intersects the wave infinite times

In Z, a vertical line intersects the sideways parabola twice

In Y, there is an asymptote but at every point a vertical line only intersects once, so the answer is D

Not A because there are 2 y values for 0

Not B because there are 2 y values for both 2 and 3

Not C because there are 2 y values for both 2 and 3

There is no problem in D

This is obviously a relation so it has to be either (a relation) or (a relation and a function)

We can see that every x-value has a single y-value so it has to be a function

It is both a relation and a function

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2 years ago

A number cube is rolled 150 times. The number 3 comes up 43 times. What is the experimental probability of rolling 3? What is th

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3 years ago

The midpoint of UV is point W. What are the coordinates of point V?

madreJ [45]

Since you don't provide the coordinates of the point W, I will help you in a general form anyway. In the Figure below is represented the segment that matches this problem. We have two endpoints U and V. So, by using the midpoint formula we may solve this problem:

$Midpoint=W=W(\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2})=W(x_{3}, y_{3}) \\ \\ where:\\ \ U=U(x_{1}, y_{1}) \ and \ V=V(x_{2}, y_{2}) \\ \\ and: \\ x_{3}=\frac{x_{1}+x_{2}}{2} \\ y_{3}=\frac{y_{1}+y_{2}}{2}$

Therefore:

$x_{2}=2x_{3}-x_{1} \\ y_{2}=2y_{3}-y_{1}$

So we know $x_{3} \ and \ y_{3}$ but we also must know $x_{1} \ and \ y_{1}$

Finally, knowing the points U and W we can find the endpoint V.

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3 years ago

Read 2 more answers

I need help with 8-13 I have 0 clue how to do it and I need to graduate soon

Darya [45]

Answer:-5

Step-by-step explanation:

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2 years ago

Beaker A contains 1 liter which is 30 percent oil and the rest is vinegar, thoroughly mixed up. Beaker B contains 2 liters which

alekssr [168]

Answer:

1.25 liters of oil

Step-by-step explanation:

Volume in Beaker A = 1 L

Volume of Oil in Beaker A = 1*0.3 = 0.3 L

Volume of Vinegar in Beaker A = 1*0.7 = 0.7 L

Volume in Beaker B = 2 L

Volume of Oil in Beaker B = 2*0.4 = 0.8 L

Volume of Vinegar in Beaker B = 1*0.6 = 1.2 L

If half of the contents of B are poured into A and assuming a homogeneous mixture, the new volumes of oil (Voa) and vinegar (Vva) in beaker A are:

$V_{oa} = 0.3+\frac{0.8}{2} \\V_{oa} = 0.7 \\V_{va} = 0.7+\frac{1.2}{2} \\V_{va} = 1.3$

The amount of oil needed to be added to beaker A in order to produce a mixture which is 60 percent oil (Vomix) is given by:

$0.6*V_{total} = V_{oa} +V_{omix}\\0.6*(V_{va}+V_{oa} +V_{omix}) = V_{oa} +V_{omix}\\0.6*(1.3+0.7+V_{omix})=0.7+V_{omix}\\V_{omix}=\frac{0.5}{0.4} \\V_{omix}=1.25 \ L$

1.25 liters of oil are needed.

6 0

2 years ago