Question

The length of a rectangular table is given by 3x+5 cm and width is given by 2x-7 cm. Express the area of the rectangle in terms of x.

Answer 1

(a+b)*(c+d)= a*c+b*c+a*d+b*d
where
a=3x
b=5
c=2x
d= -7

Answer 2

area = length x width

therefore \[A = (3x+5)(2x-7)\]
expand this and you'll get your answer

do you need more help?

Answer 3

ahmmm.. thank you.. really help it a lot..

Answer 4

welcome :D

Answer 5

The base of a triangle measures 3y+7 inches. Express the area of the triangle in terms of y..

Answer 6

area of a triangle is usually 1/2 base*height

could you draw a picture

Answer 7

not enough info

Answer 8

The base of a triangle measures 3y+7 inches. Express the area of the triangle in terms of y..

Answer 9

is it an equilateral triangle?

Answer 10

The length and width of a rectangle are given by 2 consecutive odd integers. Write the expression of the area of the rectangle.

Answer 11

area of a rectangle is length*width
let x be an odd number and the length
then the next consecutive odd integer would be x+2 and this would be the width

so just multiply the length and width

Answer 12

i cant understand..

Answer 13

lets say x = 3
the next consecutive odd number would be 5
so what must we do to x in order to get 5?

Answer 14

what is the first number?

Answer 15

x=3
x+b=5
what is b

Answer 16

2?

Answer 17

or 3 because its odd?

Answer 18

so instead of x=3
we have x= an odd number
right?

Answer 19

the next consecutive odd number would be the original odd number +2
so
(x+2)= next consecutive odd number if x is an odd number

Answer 20

so what number should i apply in the problem?

Answer 21

you shouldnt apply a number for the problem if it is not given, instead you use a variable like x, or y, or m, etc

Answer 22

so x= length
(x+2)= width
Area of a rectangle= length*width
Area= x*(x+2)
distribute x

state that x must be an odd number

Answer 23

but in my problem the length and width in unknown?

Answer 24

you're told that the length and width are 2 consecutive odd integers

Answer 25

how can i get that?

Answer 26

please give me an illustration..