Answer:
Required two variable relation is 45x =y
Step-by-step explanation:
Speed of isabella car is v = 45 miles per hour
now, According to question she takes Y miles( = distance) in X hours (= time)
from The relation of velocity i.e.
velocity =
on substituting the values in the above relation we get,
v = 45 =
on further rearranging of terms we get,
= y
HENCE, required relation is 45x =y , which is a two variable equation.
Hello,
Let's assume t the time for counting one step
V the girl velocity in t
v the escalator velocity in t
d the length to go upstairs
going up: V*60+v*60=d
walking down: V*90-v*90=d
so
V+v=d/60
V-v=d/90
2V=d*5/180
V=d*5/360
V=d/72
V*72=d The girl must count to 72 steps.(here v=0)
An arithmetic series is a pattern of a series of numbers with same difference. First, let's find the difference:
16 -5 = 11
27- 16 = 11
So, the arithmetic series is obtained by adding 11 to every previous number. The formula for an arithmetic series is
An = A1 + (n - 1)d
where An is the nth term in the series, A1 is the 1st term in the series, n is the number of terms in the series and d is the difference. Hence,
A23 = 5 + (23 -1)11
A23 = 5 + 11(22)
A23 = 247
Thus, the 23rd term is 247.
For your question you can try option #3
Answer:
D. 68+(6x+4)=180
x = 18
Step-by-step explanation:
"Supplementary angles" are angles that add up to 180°
So we add the twi angles 68+(6x+4) and that equals to 180°.
68 + 6x + 4 = 180
add 68 and 4
72 + 6x = 180
subtract 72.
6x = 108
divide by 6.
x = 18