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kolezko [41]
3 years ago
6

What is the range? Please help

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
3 0

Answer:

D.

Step-by-step explanation:

A Cubic Function goes up and down forever, as well as left and right.

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A mine worker is in a tunnel 25 feet below the ground. He descends another 13 feet. What is his final position? i already know t
Marina86 [1]

Answer:  -25 - 13

This simplifies to -38

So the worker's final position is 38 feet below the ground.

A diagram is shown below.

==========================================================

Explanation:

Draw a vertical number line. Plot 0 on it to indicate the ground level, or surface level. Then plot -25 on it, which is below 0. This is 25 feet below the ground.

To move 13 further feet downward, we will subtract 13 from -25. Subtracting a positive means we move downward.

For example, start at the 30th of a building. This is marked as +30 or just 30 on the vertical number line. Subtract off 13 to go down 13 floors and we have 30-13 = 17. So after going down 13 floors, we're at the 17th floor now.

Going back to the problem at hand, we start at -25 and subtract off 13 to get the final answer -25 - 13

The answer is not -25 - -13 and it is not -25 - (-13). This is because the two negatives cancel to be a positive. So -25 - (-13) becomes -25+13. Here we're starting at -25 but then going up 13 feet. Instead we want to go down 13 feet.

------------------------------------

After we determine the expression is -25 - 13 we will effectively add the positive versions of those numbers like so

25+13 = 38

But the final answer is negative because we're starting underground and moving further underground.

We can write it like this

-25 - 13 = -(25+13) = -(38) = -38

Therefore, if the worker starts off 25 feet underground, and moves 13 feet downward, then the worker ends up 38 feet underground. Again, use the vertical number line to help see this.

Check out the diagram below.

7 0
3 years ago
The standard golf ball has a mass of 45g. How many golf balls are there in a bag weighing 1.8kg?
Butoxors [25]
This is a working backwards question.
Since the golf ball was 45g, and the bag was 1.8kg,we need to make them the same units.
45g= 0.45kg
1.8kg= 1.8kg

Now that the units are the same, we put it in a calculator.


1.8÷0.45= 4

Therefore, there are 4 golf balls in the bags.
We can check this by doing 4×0.45= 1.8

Hope this helped!

4 0
3 years ago
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Reflect the triangle (-2,-2) (-6,-8) (-8,-8) over the x-axis. What are the new vertices?
Inessa [10]
Reflecting across the x axis changes the y value to the opposite, but doesn't change the x value, so the new values are:
(-2,2), (-6, 8), (-8, 8)
5 0
3 years ago
What is another way to write 10 4?<br><br> 0.0001<br> 10,000<br> 1,000<br> 0.001
Vesna [10]
10^4 is 10,000 when multiplied out so I'd go with the second option
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3 years ago
HELP! 10 PPPPPPOOOOOIINNNNNNTSS!! :)
balandron [24]
#1 is 2 X 10 to the 4th power

#2 is America because America has 20,000 a year and UK has 10,000 a year. The difference between them is 10,000 kilograms a year
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