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2 years ago

6

Jenna's rectangular garden borders a wall. She buys 80 ft of fencing. What are the dimensions of the garden that will maximize i

ts area?
A.) 5’ x 70’
B.) 3’ x 74’
C.) 15’ x 50’
D.) 20’ x 40’

1 answer:

seraphim [82]2 years ago

4 0

Answer:

D. 20' x 40'

Step-by-step explanation:

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You have to round off the answer too the nearest tenth.

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2 years ago

The number 360 is increased by 25%. The result is then decreased by 50%. What is the final number?

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3 years ago

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Usimov [2.4K]

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2 years ago

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Musya8 [376]

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2 years ago

The following picture is a square pyramid where DE=8 cm and m∠ADE=60°.

mr_godi [17]

Answer:

131 cm

Step-by-step explanation:

formula for surface area of pyramid is

S = (1/3)Bh

but the base ia a square, so B = $x^{2}$

S = (1/3) $x^{2} h$

the pic shows h = 8

but we don't know x

do SohCahToa

sin60 = x/8

x = 8sin60

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plug in numbers

S = (1/3) $7^{2}$ 8

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