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Olegator [25]
3 years ago
14

What is the height of the trapezoid?

Mathematics
2 answers:
brilliants [131]3 years ago
7 0
Area = 1/2 (sum of bases ) *h

40 *2 = (10+6)*h

80/16 = h

5 unit = h
baherus [9]3 years ago
6 0
The formula for the area is A=(B+b)h/2
So h=2A/(B+b)
h=2(40)/(10+6)=80/16=5u
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ahrayia [7]

Answer:

If there is 1 at the top, then you have 1, then 2, then 3, etc.

total number of oranges equals:

1 + 2 + 3 + ... + 16 + 17 + 18 <-- stop at  18 because this is the number of oranges at the base

You can use the formula:

sum of first n numbers = n*(n + 1)/2

-->

18*19/2 = 9*19 = 171

or you can figure it out (basically derive the above formula):

you have:

1 + 18 = 19

2 + 17 = 19

3 + 16 = 19

...

How many pairs do you have?  Well, it's just the number of numbers: 1-18 = 18 numbers (divide by 2) = 9 pairs)

9 pairs of 19 = 9 * 19 = 171

Hope this helps!

Step-by-step explanation:

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Step-by-step explanation:


6 0
3 years ago
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Step-by-step explanation:

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4 0
2 years ago
3 cans that store 9 tennis balls... Find the constant of proportionality &amp; write a equation to represent the relationship PL
Lilit [14]
<span>3 cans store 9 tennis balls.
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</span> <span>So the constant of proportionality is  in the working column. Pls see attached.<span>

</span></span>



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U forgot the attachment
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2 years ago
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