Answer:
x=5 and y=15
Step-by-step explanation:
x−2y=−25
x−2y+2y=−25+2y(Add 2y to both sides)
x=2y−25
Step: Substitute2y−25forxin3x−y=0:
3x−y=0
3(2y−25)−y=0
5y−75=0(Simplify both sides of the equation)
5y−75+75=0+75(Add 75 to both sides)
5y=75
5y
5
=
75
5
(Divide both sides by 5)
y=15
Step: Substitute 15fory in x=2y−25:
x=2y−25
x=(2)(15)−25
x=5(Simplify both sides of the equation)
Answer:
x=2
Step-by-step explanation:
5x-7=5-x
5x=12-x
6x=12
x=2
Answer:
1 meter =1,000 millimeters. So, the scale is:
7 mm:1,000 mm Divide both sides by 7
1 mm:142 6/7 mm - This is the scale that Tess used.
Step-by-step explanation:
Answer:
6/7
Step-by-step explanation:
Your first step will be to find the slope of Line C. Using the slope formula of 
, the slope of Line C is 
.
If Line D is perpendicular to C, that means the slope is the negative reciprocal of Line C. So, that means the slope is 6/7.
276.46 is the surface area of the cylinder
