Advertisements
Advertisements
Question
A triangle is made up of 2 red sticks and 1 blue sticks 
. The length of a red stick is given by r and that of a blue stick is given by b. Using this information, write an expression for the total length of sticks in the pattern given below:
Advertisements
Solution
Given, length of a red stick = 2r and length of a blue stick = b
From the given figure,
The total number of red sticks = 18
And the total number of blue sticks = 6
So, the total length of sticks = 18r + 6b = 6(3r + b)
Hence, the required expression is 6(3r + b).
APPEARS IN
RELATED QUESTIONS
Factorize x4 + x2 y2 + y4
Factorize `x^2 + 6sqrt2x + 10`
Simplify `(155 xx 155 xx 155 - 55 xx 55 xx 55)/(155 xx 155 + 155 xx 55 + 55 xx 55)`
`(x/2 + y + z/3)^3 + (x/2 + (2y)/3 + z)^3 + (-(5x)/6 - y/3 - (4z)/3)^3`
If \[x^2 + \frac{1}{x^2} = 18,\] find the values of \[x + \frac{1}{x} \text { and } x - \frac{1}{x} .\]
If a + b + c = 0, then write the value of a3 + b3 + c3.
Separate monomials, binomials, trinomials and polynomials from the following algebraic expressions :
8 − 3x, xy2, 3y2 − 5y + 8, 9x − 3x2 + 15x3 − 7,
3x × 5y, 3x ÷ 5y, 2y ÷ 7 + 3x − 7 and 4 − ax2 + bx + y
Evaluate: (c + 5)(c - 3)
Evaluate: (4m - 2)(m2 + 5m - 6)
Evaluate: (6p2 - 8pq + 2q2) (- 5p)
