Answer:
(-1,2)
Step-by-step explanation:
Write out the system in a matrix
3 5 7
2(6 -1 -8 ) Multiply row two by five and add to row one.
1 0 -1 Multiply row 1 by -6 and add it to row two.
6 -1 -8
1 0 -1
0 -1 -2 Multiply bottom row by -1
1 0 -1
0 1 2
x=-1, y=2
The equation would be 800(0.24)^x.
x would be 5.
800(1.24)^5
=2345.300
=$2345
Answer:
- 25x³
Step-by-step explanation:
Given
(x + 5)(x - 5)x³ ← expand the factors using FOIL
= (x² - 25)x³ ← distribute
= - 25x³
Setup 2 problems
2x - 7 < 15 and 2x - 7 > -15
2x < 22 2x > -8
x < 11 x > -4
Or you can write it -4 < x < 11
I didnt wprk the problem out but i looked it upbecause i had it on a recent test so i hope it helped.
= 649.5 ft
