The answer is 19/14x + 97/56
Answer:
7
Step-by-step explanation:
Because decagon has 10 sides. If the perimeter is 70, I would divide it. 70/10 = 7
Pardon me if I turn out to be wrong, but that is how I think you would solve this.
Answer:
2 : 5
Step-by-step explanation:
In order to obtain the ratio between numbers, we divide by the largest common factor between both.
In this question, the numbers are;
36 : 90
The largest common faction is 18. Dividing both numbers by 18, we have;
36 / 18 : 90 / 18
2 : 5
The ratio is; 2 : 5
Answer:
B. (-2,3)
Step-by-step explanation:
-3x+5y = 21
x=2y-8
Substitution
-3(2y-8)+5y =21
-6y+24+5y=21
-y+24=21
-y=-3
y=3
Plug-in other equation
2*3-8=x
6-8=x
x=-2
-3x + 5y = -9
4x + 8y = 12
Simplify the second,
x + 2y = 3
Times three,
3x + 6y = 9
Add to the first equation,
11y = 0
y = 0
-3x + 5(0) = -9
x = 3
Answer: x=3, y=0
