Diatance travelled by her= 350 miles
amount of time taken by her to travel 350 miles= 7 hrs 30 mins
=450 mins
average speed travelled by her to the nearest tenth of a mile per hour= 450*60/100
=270/10
=27
therefore he travelled 27 miles to the nearest tenth of a mile per hour.
Answer:
A power of 10 is the number 10 multiplied by itself by the number of times indicated by the exponent.When the exponent is greater than o it is followed by zeros
Answer:
x^4 -x^3 -4x^2-3
Step-by-step explanation:
f(x)=x^4−x^2+9
g(x)=x^3+3x^2+12
(f−g)(x)= x^4−x^2+9 - (x^3+3x^2+12)
Distribute the minus sign
(f−g)(x)= x^4−x^2+9 - x^3-3x^2-12
I like to line them up vertically
x^4 −x^2+9
- x^3 -3x^2-12
---------------------------
x^4 -x^3 -4x^2-3
