Jack is learning to play the piano which has 88 keys if there are 12 unique keys in each octave. how amny complete octaves are on the piano

Answers

Answer 1

Answer:

88/8 =11

Unique key in 1 octave = 12

so, in 11 octave, 12*11 = 132

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There are 4 fewer shovels than rakes. There are 6 shovels . How many rakes are there? Show your work.Can someone help me thank you

Answers

Answer:

Step-by-step explanation:

s= shovels=6

r= rakes= 6 + 4

Because 10 - 6= 4

(i hope this helped)

What value of k solves the equation?

k-4=1/256

Answers

$k-4=(1)/(256)\ \ \ \ \ \ \ \ \ \ |add\ 4\n\nk=(1)/(256)+4\n\nk=(1)/(256)+(1024)/(256)\n\nk=(1025)/(256)=4(1)/(256)$

k-4=1/256
add 4 to both sides
k=4+1/256

k=4 and 1/256

What percent 591 is of 2364?

Answers

since percent means parts out of 100 then x/100=x%

the easy way is to do it is to divide 591 by 2364
591/2364=0.25
0.25/1 multiply by 100/100=25/100=25%

the answer is 25%

25% because you need to divide 591 by 2364 to get .25 then you move the decimal place over two to the right which gives you 25%!

Is 89 a prime number

Answers

89 is a prime number because it's only factors are 1 and itself

Yes , 89 is a prime number !

The height of players on a football team is normally distributed with a mean of 74 inches, and a standard deviation of 1 inch. If there are 50 football players on the team, how many are less than 74 inches tall?

Answers

Answer:

Step-by-step explanation:

Let x be the random variable representing the height of players on the football team. Since it is normally distributed and the population mean and population standard deviation are known, we would apply the formula,

z = (x - µ)/(σ/√n)

Where

x = sample mean

µ = population mean

σ = standard deviation

n = number of samples

From the information given,

µ = 74 inches

σ = 1 inch

n = 50

x = 74 inches

the probability that a player is less than 74 inches tall is expressed as

P(x < 74)

For x = 74,

z = (74 - 74)/(1/√50) = 0

Looking at the normal distribution table, the probability corresponding to the z score is 0.5

Therefore,

P(x < 74)

The players less than 74 inches is

0.5 × 50 = 25 players

Part C: Create a graph that represents the solutions to the equation from Part A

Answers

Answer: Dear friend google

Step-by-step explanation: search it up

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