Answer: Change each mixed number to an improper fraction.
Step-by-step explanation:
<h3>
Answer: 450 mph</h3>
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Explanation:
a = speed of airplane without any wind
a+50 = speed of the plane with the wind boosting it
distance = rate*time
d = r*t
d = (a+50)*4
This represents the plane traveling 4 hours at the speed of a+50 mph. We don't really care about the distance d.
The other equation to set up is
d = (a-50)*5
which means the plane is going slower at a-50 mph and travels for 5 hours this time.
The system of equations is
Both equations involve the same variables 'a' and d, which allows us to use substitution to solve for 'a' like so
d = (a+50)*4
(a-50)*5 = (a+50)*4
5a-250 = 4a+200
5a-4a = 200+250
a = 450
The speed of the plane, without any wind, is 450 mph
The equation of a line that passes throught (x1,y1) and the slope is m is
y-y1=m(x-x1)
given
point is (-2,-6) and slope is 13
y-(-6)=13(x-(-2))
y+6=13(x+2)
last one
seems that nobody can type a "+" sign on this site
D is the answer
Hello!
<u><em>Answer: =0.2 *The answer must have a decimal point.*</em></u>
Explanation:
First, you had to dividing by the numbers. Dividing into the groups.
3/15=(3÷3)/(15÷3)=1/5
1/5=1÷5=0.2; since, the fraction 1/5=(1*2)/(5*2)=2/10=0.2
Hope this helps!
Thanks!