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3 years ago

Work out the area of trapezium ABDE

Mathematics

1 answer:

sergey [27]3 years ago

8 0

Answer:

Use corresponding triangles to get CE value.

$\frac{8}{6} = \frac{ce}{9}$

CE = 12 cm

Then

DE= 12-8 = 4 cm

To calculate the area,

$( \frac{9 + 6}{2} ) \times 4$

30 cm^2

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vampirchik [111]

I got F^-1(x) = x/4 + 4/9.

I believe the answer is B.

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3 years ago

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Ganezh [65]

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Tickets for a certain show cost $17, $21, or, for VIP seats, $40. If ten times as many $17 tickets were sold as VIP tic

lawyer [7]

Answer:

Tickets sold:

VIP $=126$

$17 tickets $=1,260$

$21 tickets $=9\cdot 126+57=1,191$

Step-by-step explanation:

Let x be the number of VIP tickets.

If ten times as many $17 tickets were sold as VIP tickets, then the number of $17 tickets is $10x.$

If the number of $17 tickets sold was 57 more than the sum of the number of $21 tickets and VIP tickets, then $10x+57=x+y$ and the number y of $21 tickets is $9x+57.$

Amounts earned:

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$21 tickets $=\$21\cdot (9x+57)=\$(189x+1,197)$

Total $=\$(40x+170x+189x+1,197)=\$(399x+1,197)$

The sales of all three kinds of tickets would total $51,471, so

$399x+1,197=51,471\\ \\399x=51,471-1,197\\ \\399x=50,274\\ \\x=126$

Tickets sold:

VIP $=126$

$17 tickets $=1,260$

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3 years ago

20 points

blsea [12.9K]

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Rom4ik [11]

First, you divide the fraction, and then you multiply it by 100.
So you get:
$\frac{5}{16} * 100$
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$31.25$

So, 5/16 is 31.25%

Hope this Helps! :)

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3 years ago