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3 years ago

Plz help me anyone plzz

Mathematics

2 answers:

Mice21 [21]3 years ago

7 0

8 and 4 should be 8

8 and 6 should be 24

8 and 10 should be 40

insens350 [35]3 years ago

7 0

ABC abc yea thrtr it hhbu

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4. Which of the following lines is perpendicular to y = -2X + 8?

Alenkinab [10]

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

That is to say:

$m_ {1} * m_ {2} = - 1$

We have the following equation:

$y = -2x + 8$

So:

$m_ {1} = - 2$

Thus:

$m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- 2}\\m = \frac {1}{2}$

Thus, a line perpendicular to the given line must have slope $m = \frac {1} {2}.$

Option A:

$x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4$

It is not perpendicular!

Option B:

$x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3$

If it is perpendicular!

Option C:

$2x + y = 4\\y = -2x + 4$

It is not perpendicular!

Option D:

$2x-y = 1\\y = 2x-1$

It is not perpendicular!

The correct option is option B

ANswer:

Option B

5 0

3 years ago

5. A ball is thrown straight up leaving the player's hands at at 7.5 m/s. If air resistance is ignored, how high can the ball tr

aleksley [76]

The maximum height reached is 2.87 meters

<h3>What is maximum height?</h3>

The maximum height of an object is the highest vertical position along the trajectory of the object.

The given parameters are:

$u = 7.5ms^{-1}$ --- the initial velocity
$v = 0ms^{-1}$ --- the final velocity
$a =-g$ --- the acceleration

To calculate the height (s) of the ball, we make use of the following equation of motion:

$v^2 = u^2 + 2as$

Substitute known values

$0^2 = 7.5^2 - 2gs$

$0 = 56.25 - 2gs$

Collect like terms

$2gs = 56.25$

Substitute 9.8 for g

$2 \times 9.8 s = 56.25$

$19.6 s = 56.25$

Divide both sides by 19.6

$s = 2.87$

Hence, the maximum height reached is 2.87 meters

Read more about acceleration and maximum height at:

brainly.com/question/14638187

3 0

2 years ago

Could someone help with the PORTFOLIO item? ASAP? PLEASE

elena55 [62]

Answer:

hello

Step-by-step explanation:

please provide your textbook because i dont have it

8 0

2 years ago

The graph of y = x2 - 4x is shown on the grid.

ratelena [41]

It would be from 0 < x < 4 as the question is basically asking when is the function below the y value of 0, so below the x-axis

5 0

3 years ago

The city of Jericho, in the Middle East, has the lowest elevation of any city on Earth. It is 258 meters below sea level! Lake E

Scorpion4ik [409]

Answer:

Lake Eyre is higher by 242 meters.

Step-by-step explanation:

Jericho = -258

Lake Eyre = -16

-258 - (-16) = -242

7 0

2 years ago

Read 2 more answers