Answer:
Length = 18 ft
Width = 4 ft
Step-by-step explanation:
Let the width of the rectangle be x ft
Therefore, length = (x + 14) ft
Area of rectangle = 72 sq ft
Answer:
60%
Step-by-step explanation:
% increase = Increase ÷ Original Number × 100
Answer:
XIX
Step-by-step explanation:
X is 10 and IX is 9 as I is 1 so it is I (1) - X (10)
Answer:
true because the center of the triangle is in the middle
Answer:
The solution to the system of equations is y = -5 and x = -2.
Step-by-step explanation:
The question tells us to use substitution to solve the system. This means that the given value for x (in terms of y) should be substituted into the other equation. This is modeled below:
-4y - 5x = 30
-4y - 5(y+3) = 30
Next, we should use the distributive property to simplify the left side of the equation.
-4y -5y - 15 = 30
The next step is to combine like terms on the left side of the equation.
-9y - 15 = 30
Then, we can add 15 to both sides of the equation.
-9y = 45
Finally, we can divide both sides of the equation by -9.
y = -5
To find the value for x, we substitute in the value we just found for y into either of our original equations.
x = y + 3
x = -5 + 3
x = -2
Therefore, the correct answer is y = -5 and x = -2.
Hope this helps!
