From the second:
2x-y=4
x=(4+y)/2 and applying this to first:
4+y+3y=12
4y+4=12
4y=8
y=2 and since x=(4+y)/2, x=3 so
x+y=2+3=5
Answer:
x=-3,x=9
Step-by-step explanation:
x^2-6x-20-7=0
x^2-6x-27=0
x^2-(9-3)x-27=0
x^2-9x+3x-27=0
x(x-9)+3(x-9)=0
(x+3)(x-9)=0
x=-3,x=9
Let us assume the distance that Emma can jump = x
Then
The distance that Manny can jump = 4x/5
The distance that manny can jump is also given and that is = 40 inches
Then
4x/5 = 40
4x = 40 * 5
4x = 200
x = 50 inches
From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the second option or option "B".
Answer:
d = (5√53)t
Step-by-step explanation:
After 1 hour, A is 10 miles north of the port, and B is 35 miles east of the port. Since these directions are at right angles, the Pythagorean theorem can be used to find the distance between the ships:
d = √(10² +35²) = √(100 +1225) = √1325 = 5√53 . . . . miles
The distance between the ships is increasing this number of miles each hour, so the desired expression is ...
d = (5√53)t ≈ 36.4t
