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2 years ago

For what duration of a second does the human eye perceive an image after looking away?

Mathematics

1 answer:

natima [27]2 years ago

8 0

Answer:

B. One-fourteenth

Step-by-step explanation:

The afterimage may remain for 28 seconds or longer. The apparent size of the afterimage depends not only on the size of the image on your retina but also on how far away you perceive the image to be. When you look at your hand, you see the negative afterimage on your hand.

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Mai bought a television for $330. The tax rate is 8%. How much did Mai pay for the television?

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Answer:

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Step-by-step explanation:

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2 years ago

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There are 110 males and 50 females working at a company. What percentage of the company’s workforce is male ?

agasfer [191]

The percent for a male is 68.75 %

110+50=160 160=100%

Females:

100% is 160

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3 years ago

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A rock is thrown into a still pond. The circular ripple move outward from the point of impact of the rock so that the area of th

4vir4ik [10]

Answer:

$\approx 31.42 \text{ Square feet per minute}$

Step-by-step explanation:

Area of the Pond A= $\pi r^2$

The increase in the area of the pond as it moves outward is: $\frac{dA}{dt}$

$\frac{dA}{dt}=\frac{d}{dt}\pi r^2\\\frac{dA}{dt}= 2\pi r \frac{dr}{dt}$

Since the area of the circle formed increases at the rate of 100 square feet per minute.

$\frac{dA}{dt}$ = 100 Square feet per minute

When the radius, r = 5 feet, we want to determine the rate at which the radius is changing, $\frac{dr}{dt}$ .

$\frac{dA}{dt}= 2\pi r \frac{dr}{dt}\\100=2*5*\pi \frac{dr}{dt}\\\frac{dr}{dt} =\frac{100}{10 \pi} =10 \pi \approx 31.42 \text{ Square feet per minute}$

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3 years ago

Evaluate the expression. 1 + |7|. The answer is probably really easy i'm just dumb-

MatroZZZ [7]

Answer:

Step-by-step explanation:

I'm sure you're still really smart, you just don't understand it :)

Those two bars mean the absolute value of whatever's inside of them. Absolute value is always positive, so if you had 34 inside of the bars, it would still be positive 34.

Now that we know what those bars mean, the expression is really this:

1 + 7

I'm sure you can solve that :)

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3 years ago

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