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Ivan
3 years ago
14

WILL MARK BRAINLIEST Select the correct answer. An inverse variation includes the point (3,-4). Which point would also belong in

this inverse variation?
Mathematics
1 answer:
viktelen [127]3 years ago
5 0

Answer:

If we have two quantities x and y, an inverse variation can be written as:

y = k/x

where k is a constant.

Now, we know that for this particular inverse variation the point (3, -4) is included.

Then we can find the value of k by replacing the values of the point in the general equation:

-4 = k/3

k = -4*3 = -12

Then our inverse variation is:

y = -12/x.

Then if we want another point that also does belong in the inverse variation, we can give x a different value and solve the equation for y.

For example, if x = 1

y = -12/1 = -12

then the point (1, -12) also does belong in the inverse variation.

if x = 6

y = -12/6 = -2

the point (6, -2) also does belong to the inverse variation

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It takes Natalie five hours to tar a roof. Imani can tar the same roof in ten hours. How long would it take them if they worked
tresset_1 [31]

Answer:

C. 3.33 hours

Step-by-step explanation:

Use the algebra work equation:

\frac{1}{tb} = \frac{1}{t1} + \frac{1}{t2}, where tb is the time to work together, t1 is the time it takes one person, and t2 is the time it takes the other person

Plug in the values we know:

\frac{1}{tb} = \frac{1}{5} + \frac{1}{10}

\frac{1}{tb} = \frac{4}{20} + \frac{2}{20}

\frac{1}{tb} = \frac{6}{20}

20 = 6tb

3.33 = tb

So, it would take them 3.33 hours when working together.

5 0
3 years ago
Suppose you are determining the growth rate of two species of plants. Species A ls 25 cm tall and grows 3 cm per month. Species
exis [7]

Answer: Last Option

H (m) = 25 + 3m\\H (m) = 10 + 8m

Step-by-step explanation:

The initial height of the plant of species A is 25 cm and grows 3 centimeters per month.

If m represents the number of months elapsed then the equation for the height of the plant of species A is:

H (m) = 25 + 3m

For species B the initial height is 10 cm and it grows 8 cm each month

If m represents the number of months elapsed then the equation for the height of the plant of species B is:

H (m) = 10 + 8m

Finally, the system of equations is:

H (m) = 25 + 3m\\H (m) = 10 + 8m

The answer is the last option

8 0
3 years ago
What is 7 7/9 divided by 4/7
e-lub [12.9K]

Answer:

4 44/49

Step-by-step explanation:

7 7/9 is 70/9

then u use 70/9 multiply by 7/4(I call it keep, change, flip method for division of fraction)

You keep the 1st fraction and because it is a mixed fraction, changing it to improper fraction is easier to solve it later on.

after that, you change the division sign to multiply sign(÷ to ×)

then you flip the 2nd fraction, which means 7/4 becomes 4/7

So overall it becomes 60/7 × 4/7 =240/49,4 44/49 as a mixed fraction.

Answer is 4 44/49

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X=4, y=28. 7x=2x+20, so subtract 2x from both sides and you’ll get 5x=20. Divide both sides by 5 and you’ll get x=4. Substitute this into the other equations and they will both equal 28.
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Find any points of discontinuity for the rational function.What are the points of discontinuity? Are they all removable?
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Hello,
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