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3 years ago

Geometry, SEMI-EASY question. I will give brainliest. Just want to double-check.

Mathematics

1 answer:

SashulF [63]3 years ago

8 0

Answer:

Option B

Step-by-step explanation:

Let the point O is the origin.

Then the coordinates of the vertices A,B and C will be,

A → (-12, -8)

B → (-8, 0)

C → (-6, -4)

Rule for the dilation of a point (x, y) by scale factor 'k' about the origin is,

(x, y) → (kx, ky)

By this rule, coordinates of the vertices of the image triangle will be,

If k = $\frac{1}{2}$ ,

A(-12, -8) → A'(-6, -4)

B(-8, 0) → B'(-4, 0)

C(-6, -4) → C'(-3, -2)

From the given options,

Option B is the answer.

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Y + 1 = -3(x - 5)
y + 1 = -3x + 15
y = -3x + 15 - 1
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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

A ball slides up a frictionless ramp. It is then rolled without slipping and with the same initial velocity up another frictionl

KATRIN_1 [288]

Answer:

Rolling case achieves greater height than sliding case

Step-by-step explanation:

For sliding ball:

- When balls slides up the ramp the kinetic energy is converted to gravitational potential energy.

- We have frictionless ramp, hence no loss due to friction.So the entire kinetic energy is converted into potential energy.

- The ball slides it only has translational kinetic energy as follows:

ΔK.E = ΔP.E

0.5*m*v^2 = m*g*h

h = 0.5v^2 / g

For rolling ball:

- Its the same as the previous case but only difference is that there are two forms of kinetic energy translational and rotational. Thus the energy balance is:

ΔK.E = ΔP.E

0.5*m*v^2 + 0.5*I*w^2 = m*g*h

- Where I: moment of inertia of spherical ball = 2/5 *m*r^2

w: Angular speed = v / r

0.5*m*v^2 + 0.2*m*v^2 = m*g*h

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h = 0.7v^2 / g

- From both results we see that 0.7v^2/g for rolling case is greater than 0.5v^2/g sliding case.

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3 years ago

The Walt Disney Company paid a $0.35 annual dividend on a day it closed at a price of

Dennis_Churaev [7]

Answer:\

hey check out the attachment i found them online hope it help and thank you!

I looked for them like for 20 min I finnaly found them

Have a nice day/night! LOL

Step-by-step explanation:

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3 years ago