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stiv31 [10]
3 years ago
10

what is the area of a trapezoid with bases of 8.2 CM + 5.9 cm and a height of 10 cm will mark brainiest

Mathematics
1 answer:
baherus [9]3 years ago
5 0
<span>Trapezoid area = ((sum of the bases) ÷ 2) • height
</span><span>Trapezoid area = [(8.2 + 5.9) /2] * 10
</span><span>Trapezoid area = (14.1 / 2) * 10
</span><span>Trapezoid area =7.05 * 10
</span><span>Trapezoid area = 70.50
</span>
Source:
http://www.1728.org/quadtrap.htm

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2 years ago
A lecture hall contains $20$ chairs, all lined in a row. What is the number of ways that five chairs can be chosen, so that no t
patriot [66]

Answer:

Step-by-step explanation:

If we choose chairs having odd number in the row

no of chairs from which selection is made = 10

no of chairs to be selected = 5

no of ways = 10C₅

similarly if we choose hairs having even numbers only ,

similar to above , no of ways

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Total no of ways

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olganol [36]

Answer:

the number of hours does sidney skate in all is 9.8 hours

Step-by-step explanation:

The computation of the number of hours does sidney skate in all is as follows:

= Last month + this month

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3 0
3 years ago
Each course at a community college is worth 1 or 2 credits. A group of students is taking a total of 16 courses that are worth a
Anuta_ua [19.1K]

Answer:

They  are taking 12 2 credit courses

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Step-by-step explanation:

x = 1 credit courses

y = 2 credit courses

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x+y = 16

The number of credits is 28 so multiply the course by the number of credits

1x+2y=28

Subtract the first equation from the second equation

x+2y =28

-x-y=-16

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

y = 12

They  are taking 12 2 credit courses

We still need to find the 1 credit courses

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The are taking 4  1 credit courses

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Answer:

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Step-by-step explanation:

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