We know that :
⊕ Area of a Rectangle is given by : Length × Width
Let us calculate the Area of the Rectangle in the Left side of the figure
⇒ Area of Left Rectangle : (x - 3) (x + 2x)
⇒ Area of Left Rectangle : (x - 3) (3x)
⇒ Area of Left Rectangle : 3x² - 9x
Let us calculate the Area of the Rectangle in the right side of the figure
⇒ Area of the Right Rectangle : (x - 1)(x)
⇒ Area of the Right Rectangle : x² - x
Given : Combined area of both rectangles is 50 cm²
⇒ 3x² - 9x + x² - x = 50
⇒ 4x² - 10x = 50
⇒ 2x² - 5x - 25 = 0
Comparing the above equation with ax² + bx + c = 0,
we can notice that :
→ a = 2
→ b = -5
→ c = -25
Answer:
c=61
Step-by-step explanation:
Since this is a right triangle, we can us the Pythagorean theorem
a^2 +b^2 = c^2
where a and b are the legs and c is the hypotenuse
11^2 + 60 ^2 = c^2
121 + 3600 = c^2
3721 = c^2
Take the square root of each side
sqrt(3721) = sqrt(c^2)
61 =c
In 7 hours 644 newpapers
in one hour it is 644/7= 92
in 9 hours-> 92x9 =828 newspapers
Use the compound interest equation: 1000 * 1.035^6 = 1229.26 dollars, to the nearest cent