In order to solve by elimination, let's multiply the first equation by -2. This way, when we add the equations, the variable y will be canceled out:
Now, adding the equations, we have:
Now, calculating the value of y, we have:
Therefore the solution is (3, 0).
=9a+10 (6a+1)
=54a²+9a+60a+10
=54a²+69a+10
=(6a+1) (9a+10)
a=-1/6,a=-10/9
Answer: Right answer is 3
Step-by-step explanation:
First of all we need to know ,symbol < indicates less than.
if the symbol is less than < or greater than > ,we use open circle to show that the number next to it is not one of the solution .
x is less than 4 ,if you think about the numbers that are less than 4 such as 3.5 ,2 ,-10 those numbers all locate on the left side of 4.
Therefore answer is 3 open circle on 4 and all numbers to the left shaded
Answer:
3.04m
Step-by-step explanation:
Time taken to swing the rope = 3.5s
Length of the rope = L
T = 2π√(L / 9.8)
3.5 = 2π√(L / 9.8)
take the square of both sides
(3.5)² =[2π√(L/9.8)]²
12.25 = 39.48 × (L / 9.8)
12.25 = 39.48L / 9.8
39.48L = 12.25 × 9.8
39.48L = 120.05
L = 120.05 / 39.48
L = 3.04m
The length of the rope is 3.04m