A coffee merchant combines coffee that costs $7 per pound with coffee that costs $3.60 per pound. How many pounds of each should be used to make 26 lb of a blend costing $6.15 per pound?
I have the question factor this problem, 2x^2+5x-3. And I was told to multiply 2 by -3, which the answer is -6. And then add the factors of -6 to get the middle number. Which -1 plus 6 is 5 for...
Write log_2?(x-1)+log_2?(x+1)-log_2?(x^2-1) as a single logarithm with a coefficient of 1
How do you find the answer for x + y = 3
Write and graph a direct variation equation that relates the v ariables
x − 3y − z = 13
3x + y − 4z = −13
−2x + 5y + 3z = −19
x = ?
y = ?
z = ?
(If the system has infinitely many solutions, express your answer...
if you need to graph y=.5x+1, how will you know if its parallel or perpendicular?
I am doing pre Algebra and I am a little confused
Paul traveld a total distance of 8 km in 54 minutes by running and walking. He then ran 10 km to the power of negative 1 , he then walked the remaining distant at 5 km to the power...
Alice has x tapes and Bill has 10 more tapes than Alice. Alice gives Bill 15 more of her tapes. Bill now has twice as many tapes as Alice now has. Write an algebraic equation to show this data and...
I DON'T KNOW HOW TO SOLVE THIS PROBLEM
y = (x * .4175) + x
where y = 874.90
I am trying to solve a problem and would like your help,, formula: I=prt, interest=$360,rate=6%,time=3years, principal= _??
By air, the distance from Melbourne, Australia, to Cairo, Egypt, is 2338 miles more than the distance from Madrid, Spain, to Bangkok, Thailand. If the total of these distances is 15,012 miles,...
I know x=-10, but I want to know the way to get there
find slope line for given point
I keep retrying this problem on paper, but when I check it, the answer is always wrong...
A student has some $1 bills and some $5 bills totaling $47. What 2 equations using substitutions can be used to solve?