algebra

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Algebra - formulas, expressions involving formulas


Definitions Formulas Write code & expressions using formula formats Homework

Rectangle: Area_rectangle= (base)(height); Area_rectangle= bh; Area_rectangle= (length)(width); Area_rectangle= lw
Triangle: Area_triangle= (base)(height)/2; Area_triangle= bh/2; Area_triangle= ½bh
Parallelogram: Area_{parallelogram}= (base)(height); Area_triangle= bh
Circle: Area_circle= (radius)²; Area_circle= r²
Trapezoid: Area_trapezoid=
(height)((base₁) + (base₂))/2; Area_trapezoid= (h)((b₁) + (b₂))/2; Area_trapezoid= ½(h)((b₁) + (b₂))

(Distance) = (Rate)(Time): dirt; D=RT
(Value of Stuff) = (Number of Items)(Value of one item): (Value of Stuff) = (#)($)

Write the code & expression
1. area of a triangle in which the base is 4 units longer than the height. answer (area) (base)(height)/2 (4 units longer than the height)(height)/2 ((height) + 4)(height)/2 (x + 4)(x)/2 x(x+4)/2
2. the area of a circle in which the radius is one more than a number answer (area) (pi)(radius)^2 (pi)(1 + (number))^2 (pi)(1 + x)^2
3. the distance traveled at a certain speed for 12 hours answer (distance) (rate)(time) (rate)(12) (x)(12) 12x
4. the value of five dimes answer (value) (#)($) (5)(10) 50 cents
5. the value of some dimes answer (value) (#)($) (some)(10) 10x

Qu. 1 & 2: Write the code & expression
1. the perimeter of a triangle in which the smallest side is one less than the middle and the largest side is one more than the middle
2. the total value of the following coins:: some pennies,; five more nickels than pennies,; one fewer quarter than the number of pennies
3. Write an algebraic area problem and answer it.
Answers

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