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Debora [2.8K]
2 years ago
13

Shelley's cup of tea cooled down 1/2 of a degree in 10 minutes. At what rate is her tea cooling down?

Mathematics
1 answer:
lana [24]2 years ago
5 0

1degree every 20 minutes or

3degrees per hour

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What is the domain of the function represented by these ordered pairs?
insens350 [35]

Answer:

A. {-2, -1, 0, 3, 5}

Step-by-step explanation:

The domain is the set containing the x-coordinates of all the points of the function.

{(<u>-2</u>, 1), (<u>0</u>, 0), (<u>3</u>, -1) (<u>-1</u>, 7), (<u>5</u>, 7)}

Domain: {-2, -1, 0, 3, 5}

4 0
3 years ago
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A cube has a side length of 4 feet what is the volume of the cube
dalvyx [7]

Answer:

V=64

Step-by-step explanation:

What you do is go based off the volume formula of a cube which is V=a^3.

You have a side length of 4.

V=4^3.

V=64.

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3 years ago
find the perimeter of ABC with verticles A(-1,2) B(3,-2) and C(-1,-2). round answer to nearest hundredth
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A po

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2 years ago
Two weeks ago Mike ran 10 miles for his longest run ever. Yesterday, Mike ran 14 miles for a new personal record. What the the p
kiruha [24]

Answer:

40%

Step-by-step explanation:

percent change in Mike's long distance runs = (change in miles ran / initial longest mile ran) x 100

change in miles ran = new personal record - initial personal record

14 - 10 = 4

(4/10) x 100 = 40%

5 0
2 years ago
Help ASAP!
blondinia [14]

Answer:

15hrs

Step-by-step explanation:

We can start by expressing the speed of the second trip as x. This means that the first trip must be x-1, and second (x-1)-1=x-2. Next we can form an equation with the information that the third day hike takes 30 min longer than second day hike. Since we now the distance of both days, we can express them in time. So... \frac{18}{x}+\frac{1}{2}=\frac{14}{x-2} ... We can solve by finding a LCM of all three expressions. Doing so we get 2x(x-2). Now multiplying out with the new denominators, we get 36(x-2)+x(x-2)=28x. Solving as a quadratic equation, the solution comes out to be x=6, x=-12. But as speed can't be negative, only solution is x=6. Now we get the speed of each day's hike. First day=x-1=5, second day=6, third day =x-2=4. Finding the time is simple, just do distance/speed. First day=12.5/5=2.5hrs. Second day=18/6=3hrs. Third day=14/4=3.5hrs. Adding total hrs up... 2.5+3+3.5=9. Finally step is accounting for the 2hr digging time per day. 2hrs*3= 6hrs. 6hrs+9hrs=15hrs. Hope this helps!

6 0
3 years ago
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