Recent questions tagged linear equations

A company rents cars for $ \$50$ per day plus $ \$ 0.15/km$. The rental cost if you drive $472 \;km$ in one day is

asked Nov 13, 2019 by priyanka.clay6

1 answer

What is the value of a for which (3,a) lies on 2x-3y=5

asked Aug 27, 2015 by pady_1

1 answer

If we add 1 in the numerator of a fraction and subtract 1 from its denominator, the fraction becomes 1, It is also given that the fraction becomes 1/2 when we add 1 to its denominator, and then what is the fraction.

asked Aug 27, 2015 by pady_1

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If from twice the greater of two numbers, 20 is subtracted, the result is the other number. If from twice the smaller number, 5 is subtracted, the result is the greater number. Find the numbers.

asked Aug 27, 2015 by pady_1

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For a pair to be consistent and dependent the pair must have

asked Aug 27, 2015 by pady_1

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Graph of every linear equation in two variable represent a

asked Aug 27, 2015 by pady_1

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In an examination one mark is awarded for every correct answer and $\large\frac{1}{4}$ mark is deducted for every wrong answer. A student answered 120 question and got 90 marks. How many questions did he answer correct.

asked Aug 27, 2015 by pady_1

0 answers

Form a pair of linear equations for: If twice the son’s age is added to father’s age, the sum is 70. If twice the father’s age is added to the son’s age the sum is 95.

asked Aug 27, 2015 by pady_1

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The pair of linear equations is said to be inconsistent

asked Aug 27, 2015 by pady_1

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For x = 2in 2x – 8y = 12 the value of y will be

asked Aug 27, 2015 by pady_1

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On representing x = a and y = b graphically we ge

asked Aug 27, 2015 by pady_1

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If $ax + by = c$ and $lx + my = n$ has unique solution then the relationbetween the coefficient

asked Aug 27, 2015 by pady_1

1 answer

The pair of linear equations x = 2 and x = 5

asked Aug 27, 2015 by pady_1

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Graphically x – 2 = 0 represents

asked Aug 27, 2015 by pady_1

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Find the values of $\alpha$ and $\beta$ for which the following system of linear equations has infinite no of solutions. $2x+3y=7, 2\alpha x +(\alpha+\beta)y=28$

asked Aug 27, 2015 by pady_1

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The sum of two natural nos. is 25 and their difference is 7 . Find the numbers

asked Aug 27, 2015 by pady_1

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A number consists of two digits when it is divided by sum of the digits, the quotient is 6 with no remainder. When the number is diminished by 9, the digits are reversed. Find the number.

asked Aug 27, 2015 by pady_1

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The total cost of 10 erasers and 5 sharpners is at least Rs 65. The cost of each eraser cannot exceed Rs 4. Find the minimum possible cost of each sharpners.

asked Aug 27, 2015 by pady_1

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Harry has Rs 2 and Rs 5 coins with him . If he has total of 33 coins worth Rs 120 with him , how many Rs 5 coins does he have?

asked Aug 27, 2015 by pady_1

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The sum of the digits of a two- digit number is 7. If 9 is added to the number , the digits interchange their places. Find the number.

asked Aug 27, 2015 by pady_1

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The total expenditure per month of a house hold consists of a fixed rent of the house and the mess charge depending upon the number of people sharing the house. The total monthly expenditure is Rs. 3,900 for 2 people and Rs. 7,500 for 5 people. Find the rent of the house and the mess charges per head per month.

asked Aug 27, 2015 by pady_1

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Sum of successors of two numbers is 40 , whereas their difference is 6. find the two numbers

asked Aug 27, 2015 by pady_1

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state true or false . If x+y\leq 5, then either x\leq 5 or y\leq 5 or both .

asked Aug 27, 2015 by pady_1

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If \large\frac{1}{x+y}=\large\frac{1}{2} and \large\frac{1}{x-y}=\large\frac{1}{3} , then x = ..... and y=....

asked Aug 27, 2015 by pady_1

0 answers

Any line in a plane divides the plane into three disjoint parts

asked Aug 27, 2015 by pady_1

1 answer

If a+b=c and a-b=d then the value of b is ................ (in terms of c and d)

asked Aug 27, 2015 by pady_1

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For how many pairs of non-zero integers, x+y=0 and x-y=0?

asked Aug 27, 2015 by pady_1

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commom region for the inequations x\leq y and y\leq x is ..........

asked Aug 27, 2015 by pady_1

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The number of solutions for the simultaneous equations 3x+4y=12 and 4x-3y=18 is

asked Aug 27, 2015 by pady_1

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which of the following is to be added to make $x^6-6x^4+4x^3+8x^2-10x+3$ a perfect square?

asked Aug 27, 2015 by pady_1

1 answer

The equations $\large\frac{x}{a}+\large\frac{y}{b}=$$1$ and $\large\frac{x}{b}+\large\frac{y}{a}=$$1$ are inconsistent if

asked Aug 27, 2015 by pady_1

0 answers

If a+2b+3c=20 and 2a+4b+c=25, then c=?

asked Aug 27, 2015 by pady_1

1 answer

If 2a+3b+4c=35 and 3a+5b+7c=30 , then a+b+c=?

asked Aug 27, 2015 by pady_1

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Cost of 5 pens and 7 notebooks is Rs 82 and cost of 4pens and 4 notebooks is Rs 52, Find the cost of 2 notebooks and 3 pens

asked Aug 27, 2015 by pady_1

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A Person can row 8 km upstream and 24 km down stream in 4 hours. He can row 12 km downstream and 12 km upstream in4 hours. Find the speed of the person in still water and also the speed of the current.

asked Aug 27, 2015 by pady_1

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Solve the equations: 4(2^{x-1})+9(3^{y-1})=17 and 3(2^x)-2(3^y)=6

asked Aug 27, 2015 by pady_1

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The solution set of \large\frac{2}{x}+\large\frac{3}{y} =2 and \large\frac{3}{x}-\large\frac{4}{y}=20 is

asked Aug 27, 2015 by pady_1

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If 5u+3v=13uv and u-v = uv, then (u,v)=

asked Aug 27, 2015 by pady_1

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If (1,4)is the point of intersection of the lines 2x+by=6 and 3y=8+ax, then find the value of a-b

asked Aug 27, 2015 by pady_1

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The system of equations px+4y=32 and 2qy+15x=96 has infinite solutions. The value of p-q is

asked Aug 27, 2015 by pady_1

1 answer

If \large\frac{x+3}{x-3} <1 , then which of the following cannot be the value of x?

asked Aug 27, 2015 by pady_1

0 answers

In a group of goats and hens , the total number of legs is 12 more than twice the total number of heads . the number of goats is

asked Aug 27, 2015 by pady_1

0 answers

If the system of linear equations px+3y=9 and 4x+py=8 has unique solutions, then

asked Aug 27, 2015 by pady_1

1 answer

The product of a number and 72 exceeds the product of the number and 27 by 360. Find the number

asked Aug 27, 2015 by pady_1

0 answers

Find the minimum value of |x-3|+11

asked Aug 27, 2015 by pady_1

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Find the value of k, for which the system of linear equations kx+2y=5 and 3x+y=1 has zero solutions

asked Aug 27, 2015 by pady_1

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How many pairs of x and y satisfy the equations 2x+4y=8 and 6x+12y=24?

asked Aug 27, 2015 by pady_1

1 answer

Four years ago age of a person was 4 times that of his son. six years later the age of the person will be 10 years less than thrice the age of his son. Find the present ages of the person and his son

asked Aug 27, 2015 by pady_1

1 answer

The sum of two numbers is 30 and the larger number exceeds the smaller by 6 . Find the numbers

asked Aug 27, 2015 by pady_1

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For what values of k is the set of equations 2x-3(2k-1)y=10 and 3x+4(k+1)y=20 are consistent

asked Aug 27, 2015 by pady_1

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