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3 years ago

What is the sum of 8/10 and 8/100

Mathematics

1 answer:

Ber [7]3 years ago

4 0

8/10 = 80/100
So the sum is 80/100 + 8/100 = 88/100 or 22/25

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3 years ago

3. In the figure, c || d. What are the measures of 1 and 2

dem82 [27]

Answer:

1: 105 degrees

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Step-by-step explanation:

2 is a corresponding angle with 75.

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3 years ago

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3 years ago

The circumference of a circle is 19π m. What is the area, in square meters? Express your answer in terms of \piπ.

lianna [129]

Answer:

90.25π

Step-by-step explanation:

The circumference of circle is 2πr, or in other words the diameter times π.

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So, in terms of π, the area of the circle is 90.25π.

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3 years ago

The height, h, in feet of a ball above the ground is given by h = −16t2 + 64t + 80, where t is the time in seconds. How long doe

Gwar [14]

Answer:

t = 5 seconds

Step-by-step explanation:

It is given that, the height h, in feet of a ball above the ground is given by :

$h=-16t^2+64t+80$

Where t is in seconds

We need to find how long does it take the ball to hit the ground? When it hits the ground, its height will be equal to 0. So,

$-16t^2+64t+80=0\\\\t=\dfrac{-64\pm \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=\dfrac{-64+ \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16},\dfrac{-64-\sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=-1\ s\ \text{and}\ t=5\ s$

Neglecting negative time.

It means ball will take 5 seconds to hit the ground.

3 0

3 years ago