Answer:
2x + 4
Step-by-step explanation:
Let R = Ralph's age
and x = Sarah's age
Then Ralph's age in 4 years = R + 4
and Sarah's age in four years = x + 4
Thus, R + 4 = 2(x + 4)
Distribute the 2 R + 4 = 2x + 8
Subtract 4 from each side R = 2x + 4
Ralph's age is 2x + 4.
The answer is 4wx2 just simplify 2wx ×2 to 4wx
The answer is A .2d/T
Since d is directly proportional to the heat lost it should be the numerator
since T is inversely proportional to the heat lost it shoudl be the denormirator
that is 1/T ; 2 is the constant
the actual formula is R = kd/T
Answer:
x = 7
Step-by-step explanation:
We know that adding TUW and WUV will give TUV.
So you can substitute the given equations for each and form a lengthy equation
5x + 3 + 10x -5 = 17x - 16
Move all the variables to one side, and the constants to the other
5x + 10x - 17x = -16 - 3 + 5
Simplify!
-2x = -14
x = 7
Key: 1 quart = 4 cups
So two quarts would equal 8 cups...So we add...
8 + 1 1/2 = 9 1/2
9 1/2 is the total. ^^
