Answer: x>−50
Step-by-step explanation:
Distribute
4x-48-3<5x-5+4
4x-51<5x-1
Subtract 5x from both sides
-1x-51<-1
Subtract 51 from both sides
-1x<50
Answer:
57 mph
Step-by-step explanation:
The relation between speed, time, and distance is ...
speed = distance/time
Using p for the speed of the plane and w for the speed of the wind, we have ...
p + w = 1520/5 = 304 . . . . miles/hour
p - w = 1520/8 = 190 . . . . miles/hour
Subtracting the second equation from the first gives ...
2w = 114
w = 57 . . . . . . divide by 2
The speed of the wind is 57 miles per hour.
47.0.7
48.0.49
49.0.29
not 100% sure but hope this helps
Answer:
x=(3-y)/2
y=3-2x)
Step-by-step explanation:
2x+y = 3
x=(3-y)/2
y=3-2x)
Answer:
And replacing the value obtained we got:
And if we solve for a we got
Step-by-step explanation:
Let X the random variable that represent the average home prices of a population, and for this case we know the distribution for X is given by:
Where and
For this part we want to find a value a, such that we satisfy this condition:
(a)
(b)
We want to find a value who accumulate 0.10 of the area on the left and 0.90 of the area on the right of the normal standard distributon and for this case it's z=-1.282
And using the distribution for the sample mean we can do this:
And replacing the value obtained we got:
And if we solve for a we got