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snow_lady [41]
3 years ago
10

The music teacher has a list if 128 students who have signed up for music classes. The music teacher can register 6 students in

each class. What is the LEAST number of classes needed for all the students to be registered in a class?
Mathematics
2 answers:
salantis [7]3 years ago
6 0
The least number of classes needed for all the students to be registered in a class is 21 classes. 
bixtya [17]3 years ago
5 0
128 divided by 6 is 21.3 so you will need at least 22 classes.
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. Find the common factor of terms 5a4+15a3<br> -10a2
Dafna1 [17]
The common factor would be 5a2
6 0
3 years ago
Find the vertices and locate the foci for the hyperbola whose equation is given. 49x2 - 100y2 = 4900
Fiesta28 [93]
<h2>Answer:</h2>

A hyperbola is the set of all points in a plane such that  the difference of whose  distances from two distinct fixed points called foci is a positive constant. In this problem, we have the following equation:

49x^2-100y^2=4900

What if we divide the whole equation by 49 \times 100=4900? Well the result is:

\frac{1}{4900}(49x^2-100y^2=4900) \\ \\ \frac{49x^2}{4900}-\frac{100y^2}{4900}=\frac{4900}{4900} \\ \\ \frac{x^2}{100}-\frac{y^2}{49}=1 \\ \\ \boxed{\frac{x^2}{10^2}-\frac{y^2}{7^2}=1}

The standard form of the equation of the hyperbola given that the vertex lies on the origin is:

\frac{x^2}{a^2}-\frac{y^2}{b^2}=1

SO THE VERTICES ARE:

\boxed{(a,0)=(10,0) \ and \ (-a,0)=(-10,0)}

Calculating the foci:

We \ know \ that \ foci \ are: \\ \\ (-c,0) \ and \ (c.0) \\ \\ Also: \\ \\ c=\sqrt{a^2+b^2} \\ \\ c=\sqrt{100+49} \therefore c=\sqrt{149}

SO THE FOCI ARE:

\boxed{(-\sqrt{149},0) \ and \ (\sqrt{149},0)}

5 0
3 years ago
Which equation can pair with y=3x-2 to create a consistent and independent system?
Ray Of Light [21]

Answer: y=4

Step-by-step explanation:  First of all, we have to know what a consistent and independent system is.

Consistent and independent- If a consistent system has exactly one solution, and is independent, then it's consistent and independent

Let's graph the equation y=3x-2 first. The y intercept of the equation is -2 and the slope of the equation is 3. Lets plot the y intercept first, then use rise/run for the slope. We end off with the image of the first one I have attached to this answer.

Next, we can see if that we draw a straight arrow to one of the points in the equation, we will get a independent and consistent system. I picked y=4, but you can pick almost any point that lies within the line.

This will grant only one solution, which will give us what we need. So let's graph y=4. Finally, we have our consistent and independent system! I've attached another file to support my answer.

So the final answer to your question is y=4, the solution to the system is (2,4), as you can see by the last image.

<em><u> Give me feedback on my answer. Tell me if I'm lacking explanation about anything. Please help me, you can also help others by informing me what else I need to be specific on.</u></em>

3 0
3 years ago
Read 2 more answers
How do I find the inverse of the function? Also, is it a function and why?
yaroslaw [1]

Answer:

Step-by-step explanation:

Essentially, begin by flipping the x and y terms:

x = (1 - 2y)^2 + 5

Then, solve for y:

\ x = (1-2y)^2 + 5\\\sqrt{x-5} = 1 - 2y\\\sqrt{x-5} - 1 = 2y\\\frac{\sqrt{x-5} - 1}{2} = y^-1\\

Because we know there is only 1 y-value for any given x-value, the inverse of the given function is also a function.

4 0
3 years ago
ky has 3 times more books than grant and grant has 6 fewer books than Jaime if the total combined number of books is 176 how man
sergiy2304 [10]
Number of books each of them have:

Jaime: x
Grant: x - 6
Ky: 3 (x - 6)

There are 176 books in total, so we can write it down as:

176 = x + x - 6 + 3 (x - 6)
176 = x + x - 6 + 3 * x + 3 * (-6)
176 = x + x - 6 + 3x - 18
176 = 2x - 6 + 3x - 18
176 = 5x - 24                        / + 24 (both sides)
5x = 200                              / ÷ 5 (both sides)
x = 40

Doublecheck:

Jamie: 40
Grant: 40 - 6 = 34
Ky: 3 (40 - 6) = 3 * 34 = 102

102 + 34 + 40 = 176, so it's correct :)
5 0
3 years ago
Read 2 more answers
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