Answer:
3x - y =13
Step-by-step explanation:
- y - y1 = m(x - x1)
- y - 2 = m(x - 5)
- distribute
- y - 2 = 3x - 15
- jump -2 across the equal sign and change the sign
- y = 3x - 15 + 2
- combine like terms
- y = 3x - 13
- use this equation to find the standard form
- y = 3x - 13
- jump the x and change the sign
- -3x + y = -13
- x must be positive, so change the sign of everything
- 3x - y = 13
Answer: X= -9
Explanation:
Expand.
3(x+15)−6x=−6(x−3)
Simplify 3x+45-6x to -3x+45.
-3x+45−6x=−6x+18
Add 6x to both sides.
−3x+45=−6x+18
Simplify-3x+45+6x to 3x+45.
3x+45=18
Subtract 45 from both sides.
3x=18−45
Simplify 18-45 to -27.
3x=−27
Divide both sides by 3
X=-27/3
Simplify 27/3 to 9.
(X=-9)
Step-by-step explanation:
the answer is on the photo above
Answer:
15 dimes
17 nickels
Step-by-step explanation:
Use a system of equations for this
n is nickels
d is dimes
n + d = 32
.05n + .10d = 2.35
solve first equation for n and plug this in the second equation
n = 32 - d
.05(32-d) + .10d = 2.35
1.6 - .05d +.10d = 2.35
1.6 + .05d = 2.35
.05d = .75
d = 15
n + 15 = 32
n = 17