Dinner came out of the oven at 7:15 P.M. after baking for 30 minutes. What time was dinner put into the oven?
2 answers:
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Answer:
Step-by-step explanation:
Given
- × -
( negative times negative = positive )
= ×
( cancel the 4 on the numerator and denominator )
=
Step-by-step explanation:
if b+c=0
b=-c
x^b=x^-c
so
1/[2(x^b)+1]
Answer:
A
Step-by-step explanation:
Remember that x^(b-c)
Using that =3^(1/2x-1/2)=3^((x-1)/2)
So we can say: , because the bases are the same
We can multiply both sides of the equation by 2. We get x-1=2, and x=3. Which is A.