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3 years ago

I need help please. I am very confused

Mathematics

2 answers:

tangare [24]3 years ago

6 0

Answer:

F(y^2) = 1/ (y^2-3)

Step-by-step explanation:

F(x) = 1/ (x-3)

Replace x with y^2

F(y^2) = 1/ (y^2-3)

otez555 [7]3 years ago

3 0

Answer: f(y^2) = 1/((1/(x-3))^2-3)

Step-by-step explanation:

To start to understand this equation realize y = f(x) but f(x) gives a little bit more information specifically to define x as whatever is in the parenthesis of f(_).

For example f(x) = x/2

so lets say x = 2

so "f(2) = 2/2" or "y = 1 when x = 2"

In this equation y or f(x) = 1/(x-3)

so to get f(y^2) = 1/(x-3)

square the value of y and plug it into 1/(x-3) as the value of x

f(y^2) = 1/(y^2-3)

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Two equations are shown:

kondaur [170]

Answer:

Both are linear

Step-by-step explanation:

As long as the equation can be written in y = mx + b form, then it is linear.

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4 years ago

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Find the value of y if B is between A and C, AB is 2y, BC is 6y, and AC is 48.

Len [333]

Answer:

7. C. 6

8. H. √34

9. A. (1, 3.5)

10. J. 10

Step-by-step explanation:

7. AB = 2y, BC = 6y, AC = 48

AB + BC = AC (segment addition theorem)

Substitute the above values into the equation

2y + 6y = 48

Solve for y

8y = 48

Divide both sides by 8

8y/8 = 48/8

y = 6

8. Distance between P(2, 8) and Q(5, 3):

$PQ = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Let,

$P(2, 8) = (x_1, y_1)$

$Q(5, 3) = (x_2, y_2)$

$PQ = \sqrt{(5 - 2)^2 + (3 - 8)^2}$

$PQ = \sqrt{(3)^2 + (-5)^2}$

$PQ = \sqrt{9 + 25}$

$PQ = \sqrt{34}$

9. Midpoint (M) of segment LB, for L(8, 5) and B(-6, 2) is given as:

$M(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2})$

Let $L(8, 5) = (x_1, y_1)$

$B(-6, 2) = (x_2, y_2)$

Thus:

$M(\frac{8 + (-6)}{2}, \frac{5 + 2}{2})$

$M(\frac{2}{2}, \frac{7}{2})$

$M(1, 3.5)$

10. M = -10, N = -20

Distance between M and N, MN = |-20 - (-10)|

= |-20 + 10| = |-10|

MN = 10

5 0

3 years ago

PLEASE HELPPPPP PLEASE 40 POINTS

Contact [7]

Answer:

18x - 9 = 72
3(6x - 3) = 72
x = 45

Step-by-step explanation:

Apply the distributed property:

Apply the distributed property: 3/5 × 30x = 18x, 3/5 × 15 = 9
Re-write the equation: 18x - 9 = 72
18x - 9 = 72 is an option listed, so that's one of the answers.

See the other options:

Another option that looks like it could be the answer is 3(6x - 3) = 72
Apply the distributed property like we did above, so it now looks like this: 18x - 9 = 72
This is the same as what we got above, so it is also an answer.

Solve:

Add 9 to each side, so it now looks like this: 18x = 81
Divide each side by 18 to cancel out the 18 next to x. It should now look like this: x = 4.5
x = 45 is an option listed, so that's one of the answers.

I hope this helps!

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3 years ago

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The table below gives the dimensions of a bridge and a scale model of the bridgeFind the scale factor of the model to the real b

vovangra [49]

The model of the bridge and the actual bridge are similar solids. The lengths of corresponding sides of similar figures are in proportion.

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mafiozo [28]

Answer:

20 is your whole answer.

Step-by-step explanation:

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