Their frequency stays the same and their wavelength decreases
X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5
The answer to 32% of 275 is 88. Hope this helped! :)
The third one because 2(15+5)=2(20)=40
D. take the number of dollars she has and multiply by .25.
dividing by a number is the same as multiplying by it's reciprocal. since she is dividing by .25, she needs to multiply by the reciprocal (4,) but instead, she is just multiplying by .25.
