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oksian1 [2.3K]
3 years ago
15

Mila spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -1.6°F

. Between 9am and noon, the temperature rose 6.6°F. Between noon and 3pm, the temperature increased by 2.8°F. Between 3pm and 6pm, the temperature went down 10.5°F. What was the temperature at 6pm?
Mathematics
1 answer:
liubo4ka [24]3 years ago
6 0

The Black Valley in Kerry, which only saw the arrival of electricity in the 1970s, is to get high-speed satellite-delivered internet this year in a pilot project funded by technology billionaire Elon Musk.Musk, founder of SpaceX and electric carmaker Tesla

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Need help please, also about probabilities
liberstina [14]

Answer:

Step-by-step explanation:

Good evening ,

_______________

a) p(rat)=1-(0,35+0,4+0,1)

b) p(cat ∪ hamster)=0,35+0,1

c) p(dog then dog)= (0,4)²

:)

8 0
3 years ago
A top-loading washing machine has a cylindrical basket that rotates about a vertical axis. The basket of one such machine starts
damaskus [11]

Answer:

n_{tot}=44rev

Step-by-step explanation:

In order to solve this problem we can make use of the following formula:

\theta=(\frac{\omega_{f}+\omega_{0}}{2})t

where θ is the total angle the basket has turned, ω is the angular velocity and t is the time.

Generally theta is written in radians and omega is written in radians per second. Now, since the revolutions are directly related to the radians and they want us to write our answer in revolutions, we can directly use the provided speeds in the formula, so we can rewrite it as:

n=(\frac{f_{f}+f_{0}}{2})t

where n represents the number of revolutions and f is the frequency at which the basket is turning.

The movement of the cylindrial basket can be split in two stages, when it accelerates and when it decelerates. So let's analye the first stage:

n=(\frac{4rev/s+0}{2})(9s)=18rev

and now let's analyze the second stage, where it decelerates, so we get:

n=(\frac{0rev/s+4rev/s}{2})(13s)=26rev

So now that we know how many revolutions the cylindrical basket will take as it accelerates and as it decelerates we can add them to get:

n=18rev+26rev=44rev

So the basket will turn a total of 44 revolutions during this 22s interval.

3 0
3 years ago
What is the perimeter of the figure?
Allisa [31]

Answer:

Answer is D, all you do is add the numbers

7 0
2 years ago
Kofi wants to find the most-liked snacks to put in the vending machine at his office so the most people will buy from it.
Whitepunk [10]

Answer:

The correct option is B

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Starting at sea level, a submarine descended at a constant rate to a depth of −4/5 mile relative to sea level in 3 minutes.
kipiarov [429]
(-4/5) / 3 =
-4/5 * 1/3 =
-4/15 mile per minute
5 0
3 years ago
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