The answer is a. the first step is to divide the whole bottom equation by -1 because x can’t be negative. you then plug in y + 9 into the first equation to solve. so the equation would be (y + 9) + y = 11. you do this because in substitution you plug in one of the equations into the other equation. you then get 2y + 9= 11. you would next subtract 9 to both sides which leaves you with 2y= 2, divide by both sides, y = 1. you then plug the why value into the first equation to figure out the value for x. so it would be x + 1 = 11, subtract 1, x equals 10.
sorry this was hard to explain! hope this helps!
Answer:
k² + 10k + 24
Step-by-step explanation:
First, the square has side length k. Now in rectangle,
l= k+6
b= k+4
Ar. of rectangle= l×b
Eq.
(k+6)(k+4)
opening bracket,
k² + 6k + 4k + 24
k² + 10k +24
Answer:
6/25
Step-by-step explanation:
5v - 4/10 = 4/5
5v = 4/5 + 4/10
5v = 6/5
v = 6/25
Answer:
The width is 13
Step-by-step explanation:
Use the formula p=2(l+w)
w=P/2 - l = 90/2 - 32 = 13ft
Area of circle = πr²
Area of circle = π x 12 x 12
Area of circle = 452.4cm² (nearest tenth)
