68.7 - t is your expression.
We need to find out the difference between their heights.
Difference means we subtract.
Since she is taller, we are subtracting her height by t. So the answer is 68.7 - t
Factor out the GCF of 9x first. 9x(x^2-1)=0; 9x(x+1)(x-1)=0; set each factor equal to zero. x=0, x=-1,. x=1 each has a multiplicity of one.
Answer:
180
Step-by-step explanation:
20 x 9 = 180
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Answer:
Step-by-step explanation:
this is math or physics
