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2 years ago

Find tan(a) in the triangle. Choose 1 answer: A. 7/25 B. 24/25 C. 7/24 D. 24/7

Mathematics

2 answers:

creativ13 [48]2 years ago

7 0

Tan(a)= Toa

Toa =opposite/adjacent

Toa=7/25

final answer is 7/25

Elza [17]2 years ago

5 0

Answer: 24/7

this is the answer enjoy

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Factorise the following.

spin [16.1K]

Answer:

x²(9x– 11)(9x + 11)

Step-by-step explanation:

81x⁴ – 121x²

The expression can be factorised as follow:

81x⁴ – 121x²

x² is common to both term. Thus:

81x⁴ – 121x² = x²(81x² – 121)

Recall:

81 = 9²

121 = 11²

Therefore,

x²(81x² – 121) = x²(9²x² – 11²)

= x²[(9x)² – 11²]

Difference of two squares

x²(9x– 11)(9x + 11)

Therefore,

81x⁴ – 121x² = x²(9x– 11)(9x + 11)

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3 years ago

Why is 3 + (−5) equal to −2?

algol13

Because it is 5 units to the left of 3 on a horizontal number line

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3 years ago

A fan is marked up 40% off the original lrice the original price was $20 whar is tge new price of the fan before sales tax

Neporo4naja [7]

10% of 20 is 2
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7 0

3 years ago

What is the area of the parallelogram?<br> 4cm 5cm 9cm

hammer [34]

Answer: Incomplete question, please edit.

Step-by-step explanation:

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3 years ago

Please help thank you.

Mnenie [13.5K]

Answer:

Option D

Step-by-step explanation:

Whenever we take a square root of a number the ± sign is with it like here in the question

$x^2=20\\\\Apply\ square\ root\ on\ both\ sides\\sqrt{x^2}=\sqrt{20} \\\\The\ square\ cancels\ out\ with\ the\ root\x=\sqrt{20}$

And then x = ±4.47 which means x has two values one is +4.47 and the other is -4.47 so Option D is our answer.

7 0

3 years ago