4.5*10^3/9*10^7=4.5/9*10^3*10^7=0.5*10^3*10^7. a^b*a^c=a^(b+c), so 10^3*10^7=10^(3+7)=10^10. 0.5*10^10=5*10^9, since we want to write in scientific notation where the leading number is bigger than one and smaller than 10.
Answer:
Step-by-step explanation:
X = 90°
B.
Because it reflects over
Answer:
$29 per day
Step-by-step explanation:
$87/3 days= $29 per day
Answer:
D. 78°
Step-by-step explanation:
50°+28°= 78°
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