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bekas [8.4K]
3 years ago
14

Molly needs to practice her piano piece 27 times before her recital. She can practice the piece 3 times in one hour.

Mathematics
2 answers:
DIA [1.3K]3 years ago
8 0

Answer:

Step-by-step explanation:

Makovka662 [10]3 years ago
8 0
The Answer Is Nine Hours.
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Brainliest to most helpful! Answer asap!
kap26 [50]

ΔAOB is a right angled triangle. Therefore the Pythagorean Theorem applies in this situation.
θ is the angle from a standard position of the line OA

The length of the y component is √(1-0)2 +(-3-(-3))2] =√(12+ 02) = 1 A(-3,1) to B(-3,0) which is opposite

Then the length of the x-component is √[(-3-0)2 +(0-0)2] = √(9+0)= 3 B(-3,0) to O(0,0) which is adjacent

The length of vector OA is √[(-3-0)2 + (1-0)2] = √(9+1) = √(10) A(-3,1) to O(0,0) which is the hypotenuse of the triangle

θ = 180 - α
sinθ = sin(180-α) = opposite/hypotenuse = 1/√10
cosθ = adjacent/hypotenuse = -3/√10
tanθ = opposite/adjacent = 1/-3 = -1/3

α= arcsin(1/√10) ≈ 18
θ =180 -18 ≈162
8 0
3 years ago
Simplify 3(2a - y) - 4(2y - a).
uranmaximum [27]
The answer would be 10a-11y
3 0
3 years ago
Read 2 more answers
Kims family spends $62.50 on dinner. they leave an 18% tip. how much is their total bill after tip?
UNO [17]
62.50 * .18 = $11.25

Add tip-

11.25 + 62.50 = 73.75

Total - $73.75

3 0
3 years ago
Freeda estimates that sales in her Bed & Breakfast will grow at 6% compounded annually. If
dexar [7]

Answer: in five years time, the sales would be $100367

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total sales at the end of t years

r represents the growth rate.

n represents the periodic interval at which it was compounded.

P represents the current sales.

t represents the time in years

From the information given,

P = 75000

r = 6% = 6/100 = 0.06

n = 11 because it was compounded once in a year.

t = 5 years

Therefore,

A = 75000(1+0.06/1)^1 × 5

A = 75000(1+0.06)^5

A = 75000(1.06)^5

A = $100367

7 0
3 years ago
Help! Please! <br> Let x=a+bi and y=c+di<br> 2x+3y
patriot [66]

Answer:65

Step-by-step explanation:

4 0
3 years ago
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