Do the rainbow method
x^2 - 6x + 2x - 12
Now simplify
x^2 - 4x - 12
The answer is x^2-4x-12
Whatever's in the square root divide it by itself and thats where the calculator comes in.
From all this information we can come up with a few equations to work with...
first we have that the worth of each coin times the number of those coins all added together equals 4.65
here I have n = nickels, d = dimes, and q = quaters
then we are told that there are "three more quarters than dimes"
which translates to the equation
or
we are also told that there are "twice as many nickels as quarters"
this translates to
to solve for quarters, we plug in d (in terms of q) and n (in terms of q) into the first equation we created.
then we distribute and start trying to solve for
then add like terms
then add 0.30 to both sides
then divide both sides by 0.45
therefore our answer is B) 11 quarters
Answer:
5.
a. 4x+8+2
4x+10
=2(2x+5)
b. 3x−12+6x+9
9x−3
=3(3x−1)
Step-by-step explanation:
This question wants you to reverse the operations that occurred.
Start with 12 stamps.
Divide this number by 3/4. This represents Carla giving 1/4 of the stamps to Thomas.
Multiply this number by 2. This represents Jim giving half of the stamps to Carla.
Multiply this number by 2. This represents John giving half of his stamps to Jim.
John started out with
64 stamps.