2x^2 + 8x - 12 = 0..divide by 2
x^2 + 4x - 6 = 0
x^2 + 4x = 6...add 4 to both sides of the equation
x^2 + 4x + 4 = 6 + 4
(x + 2)^2 = 10....<== ur constant is 10
x + 2 = (+-)sqrt 10
x = -2 (+ - ) sqrt 10
x = -2 + sqrt 10
x = -2 - sqrt 10
Use a straightedge to draw a diameter of the circle.
Answer:
400 cupcakes
Step-by-step explanation:
So, 340 is 85%. 15% is chocolate.
340/x = 85/100
34000=85x
x=400
Total = 400 cupcakes.
Hope this helps!
Answer:
52.5 cm^2
Step-by-step explanation:
The base length of the triangle on top is ...
8 cm - 1 cm - 2 cm = 5 cm
Then the area of that triangle is given by the formula ...
A = (1/2)bh = (1/2)(5 cm)(5 cm) = 12.5 cm^2
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The area of the rectangle below that triangle is the product of its length and width:
A = (8 cm)(5 cm) = 40 cm^2
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The total area is the sum of the areas of the rectangle and triangle, so is ...
total area = 40 cm^2 + 12.5 cm^2 = 52.5 cm^2