9514 1404 393
Answer:
z = (xy)/(x+y)
Step-by-step explanation:
Taking logarithms base 10, we have ...
x·log(2) = y·log(5) = z·log(10)
z = x·log(2) = y·log(5) . . . . . . . . log(10) = 1
__
Then z/x = log(2), and z/y = log(5), so ...
z/x +z/y = log(2) +log(5) = log(2·5) = 1
z = 1/(1/x +1/y) = 1/((x+y)/(xy))
z = (xy)/(x+y)
Answer:
Step-by-step explanation:
Answer:
I believe it’s the first third and fourth because, 10 and -10 cancel out to 0, moving 12 and going -12 back also cancels out and the car returns to the ground so the toy car ends in the same place it started
Answer:
T = 4x - 5
Step-by-step explanation:
Let x = Ben's age
2x = Chloe's age
x - 5 = Dan's age
Combine all the terms and simplify to form an equation.
T = 2x + x + x -5
T = 4x - 5
Step-by-step explanation:
For the given figure PQRS:
Given:
To prove
In Δ PSQ and ΔRQS
[Given]
[Definition of perpendicular lines]
is a right triangle [Definition of right triangles]
[Given]
[Definition of perpendicular lines]
is a right triangle [Definition of right triangles]
[Given hypotenuse of both triangles congruent]
[ By reflexive property of congruence side QS
congruent to itself ]
[H.L. congruence postulate]
Thus triangles are are congruent by Hypotenuse Leg postulate.