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iragen [17]
3 years ago
13

The average mass of a group of X people in a class is 60 kg. Albert, Ben and Carl join the group and the new average mass is 20

kg The average mass of Alpert, Ben and Carl is 100 kg.
What is the value of x? ​
Mathematics
1 answer:
elena-s [515]3 years ago
8 0

Step-by-step explanation:

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Which choice does NOT describe a parallelogram?
weeeeeb [17]

Answer: B. A quadrilateral that has diagonals that do not bisect each other.

Step-by-step explanation:

  • A parallelogram is a quadrilateral whose opposite sides are equal or congruent and parallel. Also, the opposite sides in parallelogram are equal or congruent and the sum of  two adjacent angles is 180 degrees.The diagonals of parallelogram bisect each other.

Therefore by the properties of parallelogram the choice that does NOT describe a parallelogram is " <em>A quadrilateral that has diagonals that do not bisect each other</em>.".

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3 years ago
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Select the fraction that is NOT in lowest terms . which of these fractions is not in lowest term?
Kisachek [45]

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Step-by-step explanation:

14/21 is divisible by 7, and can reduce to 2/3

6 0
3 years ago
Write 22 4/5 as a decimal​
romanna [79]

change to improper fraction:

22 4/5

22*5=110+4=114

114/5

divide:

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A term that describes the fraction that has a variable or valuable expression proper factor

3 0
3 years ago
Pease help, thank you
andreyandreev [35.5K]

Answer: -2

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

Draw a vertical line through 4 on the x axis. This vertical line crosses the parabola at some point (which we'll call point A). Draw a horizontal line from point A to the y axis and note how it lands on y = 12. Therefore the point (4,12) is on this parabola.

Repeat the same steps as before to find that (8,4) is also on the parabola

We need to find the slope of the line through (4,12) and (8,4)

m = (y2 - y1)/(x2 - x1)

m = (4-12)/(8 - 4)

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The slope of this line is -2 meaning that the average rate of change from x = 4 to x = 8 is -2.

The line goes down 2 units each time you move to the right 1 unit.

6 0
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