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3 years ago

What is the inverse function of y=x^2+4

Mathematics

1 answer:

user100 [1]3 years ago

8 0

Answer:

does not exist

Step-by-step explanation:

The inverse relation is found by swapping x and y, then solving for y.

x = y^2 +4

x -4 = y^2

y = ±√(x -4)

This is the inverse relation. Since it is double-valued, it is not a function.

The function given does not pass the horizontal line test, so there is no inverse function.

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7. Find the value of Z in the following equation: 8Z = 64.

Effectus [21]

Z=8 because you have to get z by itself therefore you have to divide 8 on both sides leaving z to equal 8

4 0

3 years ago

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Multiply using FOIL or Table method (x + 4) (x + 5)

mylen [45]

Answer:

${x}^{2} + 9x + 20$

Step-by-step explanation:

1) Use FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

${x}^{2} + 5x + 4x + 20$

2) Collect like terms.

${x}^{2} + (5x + 4x) + 20$

3) Simplify.

${x}^{2} + 9x + 20$

Therefor, the answer is x² + 9x + 20.

5 0

2 years ago

A bus travels at a constant speed. The following table shows the distance the bus travels (in kilometers) over a period of time

Olegator [25]

Answer:

315 km

Step-by-step explanation:

If the bus travels at constant speed, then the slope of the distance versus time graph can be calculated by using any two points from this table.

Let's use the points (0.5, 42) and (4.5, 378):

as we move from the first point to the second, t increases by 4 and y increases by 336. Thus, the slope of this graph is

m = rise / run = 336 km / 4 hr = 84 km/hr

then distance traveled = speed times time, or

distance traveled = (84 km/hr)t, where t is the elapsed time.

In 6 hours the bus would travel

( 84 km/hr )(6 hr) = 504 km, or approx. 315 mi

8 0

2 years ago

Read 2 more answers

Please help me lol a lil confused

alex41 [277]

$\leadsto f( \rm x) = - (x - 3)(x - 5)$

$\\ \\$

$\leadsto f( \rm x) = - ( {x}^{2} - 5x - 3x + 15) \\$

$\\ \\$

$\leadsto f( \rm x) = - ( {x}^{2} - 8x + 15) \\$

$\\ \\$

$\leadsto f( \rm x) = - {x}^{2} + 8x - 15 \\$

3 0

2 years ago

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A snail moved 5 feet in 2 hours. How many feet will the snail move in 5 hours?

mamaluj [8]

The best way to do this is to set up a proportion

2 5
--- = ----
5 x

then cross multiply and divide

5 times 5=25/2=12.5

he would move 12.5 feet in 5 hours

I hope I've helped!

4 0

2 years ago