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3 years ago

suppose the line segment whose endpoints are H(5,0) and I(-6,-3) is reflected over the y axis? what are the coordinates of H’I’?

Mathematics

1 answer:

padilas [110]3 years ago

7 0

Answer:

see explanation

Step-by-step explanation:

Under a reflection in the y- axis

a point (x, y ) → (- x, y ), thus

H(5, 0 ) → H'(- 5, 0 )

I(- 6, - 3 ) → I'(6, - 3 )

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The height of a small rock falling from the top of a 124-ft-tall building with an initial downward velocity of –30 ft/sec is mod

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Answer:

Option 3.

Step-by-step explanation:

The given function is

$h(t)=-16t^2-30t+124$

where, h(t) is the height of a small rock falling from the top of a 124-ft-tall building and t is the time in seconds.

It is a downward parabola.

Equate the function equal to 0, to find the time at which the rock touch the ground.

$-16t^2-30t+124=0$

If $ax^2+bx+c=0$ , the according to the quadratic formula

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

Using quadratic formula, we get

$t=\dfrac{-(-30)\pm \sqrt{(-30)^2-4(124)(-16)}}{2(-16)}$

$t=\dfrac{30+\sqrt{(-30)^2-4(124)(-16)}}{2(-16)},\dfrac{30-\sqrt{(-30)^2-4(124)(-16)}}{2(-16)}$

$t=-3.875, 2$

Time cannot be negative. So, the rock remain in the air in the interval 0 < t < 2.

Therefore, the correct option is 3.

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3 years ago

Whats 1500x1500+(1/5- 2/6) divided by 28=?

Ilya [14]

Answer:

2249999.99524

Step-by-step explanation:

The answer would be 2249999.99524

Or just 224999

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3 years ago

Twins Bakery has 12 bags of flour in their bakery. Each bag weighs 4.53 pounds. They will use all of the flour to make 18 batche

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Answer:

1a) 54.36

1b) 3.02 per batch

Step-by-step explanation:

1a) 12 x 4.53= 54.36

1b) 54.36/18=3.02

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3 years ago

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PtichkaEL [24]

Answer:

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