25% of 30 can be found by converting 25% to a decimal and multiplying it by 30.
25% = 0.25
30x0.25=7.5
So x is 7.5.
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hope it helps
x+142 =3x+64
subtract x from each side
142 = 2x+64
subtract 64 from each side
142-64 = 2x
78=2x
divide by 2
78/2 = x
x=39
The number is 39
4:1/6 if you add all the instruments you get 120 then you divide it by six and you get 20 snare drums
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pp is an exponential function with an initial value of
