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2 years ago

What is 52 out of 66 in percent

Mathematics

2 answers:

Alex787 [66]2 years ago

5 0

Answer:

78.79%

Step-by-step explanation:

52/66 x 100 = 78.787878787879

geniusboy [140]2 years ago

3 0

78.79% is the answer to your question

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Jerry, an electrician, worked 7 months out of the year. What percent of the year did he work? (Round answer to the nearest hundr

spayn [35]

He works for about 58.33% of the year

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2 years ago

How to do pythagoras theorem

german

Answer:

i dont know yo momma

Step-by-step explanation:

4 0

2 years ago

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An amphitheatre has 24 seats in the first row, 28 in the second, 32 in the third, and so on, for 29 rows. How many seats are

melomori [17]

The answer is 2,320 seats in the amphitheater. Since the seats are increasing at a rate of 4 more seats each row, then just add 4 to the number for each past row starting at 32 since that's where the rest is unknown. Once you find all he numbers just add them up to get your answer.
I hope I helped!

3 0

2 years ago

If x+y = 1, and x^2 + y^2 = -1, what is x^7 + y^13? 1) 0 2) 1 3) -2 4) 2 5) -1

damaskus [11]

Solve for x and y :

x + y = 1 → y = 1 - x

x ² + y ² = -1

x ² + (1 - x)² = -1

x ² + (1 - 2x + x ²) = -1

2x ² - 2x + 1 = -1

2x ² - 2x + 2 = 0

x ² - x + 1 = 0

x ² - x + 1/4 = -3/4

(x - 1/2)² = -3/4

x - 1/2 = ±√(-3/4)

x - 1/2 = ±√3/2 i

x = 1/2 ± √3/2 i → x = exp(± iπ/3)

y = 1 - (1/2 ± √3/2 i ) → y = -1/2 ± √3/2 i → y = exp(± 2iπ/3)

Then

x ⁷ + y ¹³ = exp(± 7iπ/3) + exp(± 26iπ/3)

… = exp(± iπ/3) + exp(± 2iπ/3)

since 7π/3 is equivalent to π/3, and 26π/3 is equivalent to 2π/3 (both modulo 2π).

In either case, we get

x ⁷ + y ¹³ = x + y = 1

so the answer is (2) 1.

8 0

2 years ago

Find the unknown side length, x. Write your answer in simple

Bumek [7]

Answer:

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 32² = 48²

x² + 1024 = 2304 ( subtract 1024 from both sides )

x² = 1280 ( take the square root of both sides )

x = $\sqrt{1280}$

= $\sqrt{256(5)}$

= $\sqrt{256}$ × $\sqrt{5}$

= 16 $\sqrt{5}$ → C

8 0

2 years ago