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Fed [463]
3 years ago
12

HELP ME PLZZZZ I’LL MARK BRAINLIEST

Mathematics
1 answer:
ehidna [41]3 years ago
6 0

Answer:

1. n=24

2.n=10

3.n=11

4.n=2

5.n=24

6.n=4

7.n=9

8.n=5

9.n=4

10.n=2.1

11.n=3

12.n=18

13.n=45

14.n=15/4

15.n=3

16.n=35

Step-by-step explanation:

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Please, somebody, solve this quick and reply with step by step explanation AND provide all steps of working!
Alexxx [7]

Answer:

For a trapezium of height H, parallel side 1 X, and parallel side 2 Y, the area is:

A = (1/2)*H*(X + Y)

with this we can complete the table.

a)

Here we know:

X = 7cm

Y = 11cm

H = 6cm

Then: A = (1/2)*6cm*(7cm + 11cm) = 54 cm^2

b)

Here we know:

X = 8 m

Y = 10 m

A = 126 m^2

Then:

126 m^2 = 0.5*H*(8m + 10m)

126 m^2 = H*9m

126 m^2/9m = H = 14m

Then the height of this trapezoid is 14m

c)

Here we know:

X = 5mm

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A = 72 mm^2

Then:

72 mm^2 = 0.5*8mm*(5mm + Y)

72 mm^2 = 4mm*(5mm + Y)

72mm^2/4mm = 5mm + Y

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7 0
3 years ago
Select all that apply:
avanturin [10]

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Step-by-step explanation:

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balandron [24]
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Dmitry_Shevchenko [17]

Answer:

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7 0
2 years ago
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fredd [130]

Answer:

Hi!

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The x-axis is the horizontal line, and the y-axis is the vertical line.

I hope this helps you!

6 0
3 years ago
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