Answer: D is correct.
Step-by-step explanation:
V1=4/3TTR^3
V2=4/3TT(R/2)^3
V2/V1=R^3/8 / R^3=1/8
Answer:
{x,y}={-8,-2}
Step-by-step explanation:
[1] x = 2y - 4
Plug this in for variable x in equation [2]
[2] 7•(2y-4) + 5y = -66
[2] 19y = -38
Solve equation [2] for the variable y
[2] 19y = - 38
[2] y = - 2
By now we know this much :
x = 2y-4
y = -2
Use the y value to solve for x
x = 2(-2)-4 = -8
Answer:
Option C. 
Step-by-step explanation:
we know that
The formula to calculate the slope between two points is equal to
we have
Substitute the values and solve for x2
equate the denominators
Answer: 225 meters per second
Step-by-step explanation:
Bruno was able to reach 450 meters in just 2 minutes.
His velocity therefore, can be determined by the speed formula which is:
= Distance / Time
= 450 / 2
= 225 meters per second
= 225 m/s
His velocity is 225 m/s.
9514 1404 393
Answer:
y = -5/3x -13/3
Step-by-step explanation:
In any "solve for ..." problem, it is useful to start by identifying where the target is and what has been done to it. Here, y is in one term on the left side of the equation and it has had these things done to it:
We want to undo these in reverse order. We undo addition by adding the opposite. We undo multiplication by multiplying by the reciprocal (equivalently, dividing). <em>Whatever we do to one side of the equation, we must also do to the other side</em>.
So, first we add the opposite of -5x to both sides of the equation.
-5x +5x -3y = 13 +5x
-3y = 13 +5x . . . . . . . . . collect terms
Next, we undo the multiplication by -3. We can do that by multiplying both sides by 1/(-3) = -1/3.
(-1/3)(-3y) = (-1/3)(13 +5x)
y = -5/3x -13/3 . . . . . also we rearranged the terms to standard form
