A triangular Saul has a base of 5 m and a height of 10 m. If canvas costs $18 a square meter, find the cost of canvas to make a sail.

$450

Step-by-step explanation:

First of all, you need to find the area of the triangle. The formula is:

Area of triangle = 1/2 * base * height

Given the base of triangle is 5m and the height is 10m. So, the area of triangle will be:

Area of triangle = 1/2 * 5m * 10m

Area of triangle = 25 meter square

Then, you can find the cost of canvas to make a sail.

Cost = $18 * 25 meter square

Cost = $450

Thus, the cost of canvas to make a sail is $450.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

yes

step-by-step explanation:

yes