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vova2212 [387]
2 years ago
5

A piano has 88 keys. Fifty-two of the keys are white.

Mathematics
1 answer:
Tcecarenko [31]2 years ago
8 0

Answer:

36

Step-by-step explanation:

88 - 52

=36

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Pls help because im awful at math
Vesnalui [34]

Answer:

8/4

Step-by-step explanation:

because 8 is x and x goes first and y is 4 and y goes last

hope this helps!

5 0
2 years ago
Read 2 more answers
Please help me with this problem!
Oksanka [162]
(25-y) ^2-y^2=25
y=12
x=25-12
x=13

(13,12)
7 0
3 years ago
<img src="https://tex.z-dn.net/?f=x%20%20%5Cdiv%203x%20-%202%20%3D%201%20%5Cdiv%203x%20-%204" id="TexFormula1" title="x \div 3x
Maurinko [17]

Hello from MrBillDoesMath!

Answer:

x = 1/2 (1 +\- i sqrt(23))

Discussion:

x \3x - 2 =   (x/3)*x - 2   =  (x^2)/3 - 2     (*)

1 \3x - 4   =  (1/3)x - 4                               (**)

(*) = (**)   =>

(x^2)/3 -2 = (1/3)x - 4        => multiply both sides by 3

x^2 - 6 = x - 12                 => subtract x from both sides

x^2 -x -6 = -12                   => add 12 to both sides

x^2-x +6  = 0

Using the quadratic formula gives:

x = 1/2 (1 +\- i sqrt(23))

Thank you,

MrB

4 0
2 years ago
I would appreciate if someone could answer this question I will give a brainlist for whoever explains and answers ;)
AleksandrR [38]

Answer:

Since this is a right triangle with one angle and hypotenuse given and opposite side unknown, we can use the definition of sine to find the unknown side.

sin 17 = x/hypotenuse = x/19

x = 19sin17 = 5.6

4 0
2 years ago
Round 8.96278650871 to the nearest millionth.
Andru [333]

the answer is 8.962790 because it is rounded to the nearest millionth

I hope this helps you

5 0
2 years ago
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