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tatyana61 [14]
3 years ago
10

How many black keys will appear on a pipe organ with a total of 240 keys?

Mathematics
1 answer:
Aneli [31]3 years ago
5 0

Answer:

100

Step-by-step explanation:

Black keys 5 10 100

Total keys

Black keys + white keys = 12 24 240

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If you do you stand on 1 foot for two minutes and his friend Tim stand on one leg for 75 seconds how many more seconds did his f
Rzqust [24]

Answer:

45

Step-by-step explanation:

120-75=45

7 0
4 years ago
One line passes through the points (-3,-1) and (1,-9). Another line passes through point (1,4) and (5,6). Are the lines parallel
amm1812

The lines are perpendicular.

3 0
3 years ago
For what values of a the following expressions are true: |a−5|=5−a
julia-pushkina [17]

Answer:

Whenever  a\leq 5.

Step-by-step explanation:

We can play around with some numbers and develop some rules for this equation.

Note that the number 5 and -5 are used here, so let's try using 5 as a.

|5-5| = 5-5\\|0| = 0\\0 = 0

So 5 works. Let's try a random number like 3.

|3-5| = 5-3\\|-2| = 2\\2 = 2

Okay, with this info we know that we might be able to develop one rule that a. Just to test, let's try 0, -3, and -5.

|0-5| = 5-0\\|-5| = 5\\5 = 5

Zero works.

|-3 - 5| = 5-(-3)\\|-8| = 8\\8 = 8

-3 works.

|-5 -5| = 5-(-5)\\|-10| = 10\\10 = 10

-5 works. Now, this might stop here making the equation -5 \geq  a \leq  5, so let's test a number outside of -5 - say -20.

|-20 - 5| = 5-(-20)\\|-25| = 25\\25 = 25

Yes! This works, so a works for this equation as long as a \leq 5.

Hope this helped!

8 0
3 years ago
Read 2 more answers
Explain how you can find the LCM of 8 and 10
lions [1.4K]

Answer:

2

Step-by-step explanation:

When trying to find the LCM of two numbers you need to write down all possible ways to multiply any number used to get both 8 and 10. When doing that, the LCM is the smallest number out of both of them.

7 0
4 years ago
Read 2 more answers
Q11) kelly puts $350 in a savings account. the savings account accrues interest at a flat rate of 1.05% a month. how much will t
Leviafan [203]

The account be worth in 7 months is 375.725 .

<h3>What is the amount in simple interest?</h3>

Amount (A) is the total money paid back at the end of the time period for which it was borrowed. The total amount formula in case of simple interest can also be written as: A = P(1 + RT)

Here, A = Total amount after the given time period.

Given that,

P = $350, R = 1.05%, T = 7 month

The simple interest equation uses "t" as years, but is just cycles, using an APR rate.

now, if we never mind "t" as years and just use it as an interest cycle, then we can say the rate is 1.05% and the period is 7 cycles.

A = P(1 + RT)

   = 350(1+1.05%×7)

   = 350(1+0.0105×7)

   = 350(1+0.0735)

   = 350×1.0735

A  = $375.725

Hence, The account be worth in 7 months is 375.725 .

To learn more about simple interest from the given link:

brainly.com/question/25793394

#SPJ4

7 0
2 years ago
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