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luda_lava [24]
2 years ago
7

The minute hand of a certain clock is 4 in long. Starting from the moment when the hand is pointing straight up, how fast is the

area of the sector that is swept out by the hand increasing at any instant during the next revolution of the hand?
Mathematics
1 answer:
aliya0001 [1]2 years ago
3 0
  <span>A = πr² * t/60 
dA/dt = πr²/60 = π*4²/60 = 4π/15

Hope this helps!
STSN</span>
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A bowl has only red, green, and purple grapes. The probability of picking a red grape out of the bowl, eating it, and then picki
Xelga [282]

The probability of picking a green grape is 1/2.

<h3>What is probability?</h3>

Probability is the occurence of likely events. It is the area of mathematics that deals with numerical estimates of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1.

Since the probability of picking a red grape out of the bowl, eating it, and then picking a green grape out of the bowl is 1/8 and probability of picking just a red grape is 1/4 .

The probability of green grape will be the division. This will be:

= P(R and G) / P(R)

= 1/8 ÷ 1/4

= 1/8 × 4/1

= 1/2

The probability is 1/2.

Learn more about probability on:

brainly.com/question/24756209

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8 0
11 months ago
(1,9),m=4 in intercept from
kiruha [24]
Y = 4x + b
9 = 4(1) + b
7 0
2 years ago
Someone help me asap​
GenaCL600 [577]

Answer:

44 cents

Step-by-step explanation:

a unit price is how much something costs per one

if it costs 4 dollars for 9, we can do 4/9 to find the unit price

4/9=.4444444....

this to the nearest hundredth is .44 or 44 cents

3 0
3 years ago
Read 2 more answers
ryan spends 10 1/2 hours at work each day. he has a 3/4 hour lunch and receives two 1/4 hour breaks. how much time does ryan spe
SIZIF [17.4K]
Ryan only work for 9 1/4 hour everyday because he takes 1 1/4 hour of break so you minus the from the total and get the sum of 9 1/4
5 0
3 years ago
The life expectancy (in hours) of an electric bulb is normally distributed with a mean of 5000 and a standard deviation of 1000.
Sergeu [11.5K]

Answer:

P(z>1.3) = 0.9032

Step-by-step explanation:

We are given:

Mean = 5000

Standard deviation = 1000

x = 6300

P(x>6300)=?

z-score =?

z-score = x- mean/standard deviation

z-score = 6300 - 5000/1000

z- score = 1300/1000

z-score = 1.3

So, P(x>6300) = P(z>1.3)

Looking at the z-probability distribution table and finding value:

P(z>1.3) = 0.9032

So, P(z>1.3) = 0.9032

7 0
3 years ago
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