Answer:
60 dollars I think
Step-by-step explanation:
Please mark brainlest
Answer:
2(2x + 5)(2x - 5)
Step-by-step explanation:
First, take out the common factor of 2:
2(4x^2 - 25)
Then factor. Because they are differences of squares, this'll be easy:
2(2x + 5)(2x - 5)
Timothy will be 20 in five years and albert will be 80
Answer:
x=131/21
y=-23/21
Step-by-step explanation:
<u>Given:</u>
5x+2y=29
8x-y=51
<u>Eliminate y variable and solve for x:</u>
5x+2y=29
+ 16x-2y=102
_________
21x=131
x=131/21
<u>Plug x into either original equation and solve for y:</u>
5x+2y=29
5(131/21)+2y=29
655/21+2y=29
655/21+2y=609/21
2y=-46/21
y=-46/42
y=-23/21
Answer:
14 and 10
Step-by-step explanation:
We have the equation x(x-4)=140. We can distribute the x to everything in the parenthesis so it's easier to work with.
x(x-4)=140
Let's move 140 to the left side, so we can solve this equation better by finding the zeros of the equation.
To find the zero, we have to find TWO values that multiply to -140 but add to -4.
(x-14)(x-10)=0
To find the zeros. make both of those parenthesis equal to zero.
x=14, 10