Variables

Q.

What is an endogenous variable?

Q. In an algebraic expression $x+5$ , variable and constant are ________.

1. $x$, 5
2. $x$, 0
3. None of the above
4. $x$, 1

Q. Which of the following statements are correct regarding the variable?

1. Variable can be 'k'
2. $\pi$ is a variable
3. We can perform addition on variables
4. We cannot perform multiplication on variables

Q. In the algebraic expression $x+2$, variable and constant are ________.

1. $x$, 2
2. $x$, 1
3. 1+$x$, 1
4. 0, $x$

Q.

Variables are also known as numbers.

1. real

2. imaginary

3. literal

4. none of these

Q.

How do you simplify linear equation $?$

Q. Which of the following is correct regarding variables ?

1. We can perform addition on variables
2. We can perform multiplication on variables
3. We cannot perform division on variables
4. None of the above.

Q. Tasha is drawing a dot rangoli. She has 9dots in a row. How many dots will her rangoli have for r rows, ..? How many dots are will her rangoli have for r rows, .?if there were 10rows.?

Q. Write the given statement in algebraic form "28 more than twice of $x$ is equal to 45." [1 MARK]

Q.

Amanda is running a mile in gym class.

She runs at a pace of $5\text{minutes}$ per mile.

Whats the dependent variable in the situation.

Q. In an algebraic expression, a single variable can be used to represent two different missing numbers/values.

1. False
2. True

Q. Choose the expression with exactly one variable.

1. 2a + b - 7
2. a + 2
3. 1
4. a + b + c

Q. Pick the Variables from the following.

1. 14
2. 0
3. m
4. +

Q. How many variables are there in the given equation 2a + 3b + 4c = 3?

1. 3
2. 4
3. 1
4. 2

Q. Which of the following is a variable in our daily life ?

1. Cost of 1 kg apples
2. Weight of 1 kg apples
3. Hours in a day
4. Seconds in a minute

Q. In the algebraic expression 5+xy, 5, x and y are ___________respectively.

1. variable, constant and variable
2. variable, variable and constant
3. constant, variable and variable
4. variable, constant and constant

Q. Match the following with a suitable nomenclature.

1. Constant
2. Variable
3. Algebraic expression

Q.

Which one is expression with numbers only :

$5$

Q. In the algebraic expression 5+xy, 5, x and y are ___________respectively.

1. variable, constant and variable
2. variable, variable and constant
3. constant, variable and variable
4. variable, constant and constant

Q. The process of determining the value of the unknown from an algebraic equation is called solving the equation for the unknown.

1. True
2. False

Q.

Which one is an expression with numbers only :

$5(27-7)+7\times 2$

Q.

All integers are constants not variables.

1. True
2. False

Q. How many variables are there in the given equation 2x + 3y = 5?

1. 4
2. 3
3. 1
4. 2

Q. Which of the following can be used as a variable?

1. $5$
2. $a$
3. $\frac{13}{5}$
4. $\pi$

Q. How many variables are there in the given algebraic equation?

$\frac{5x+y}{3z+k}=9f+2$

1. 2
2. 4
3. 3
4. 5

Q. Which of the following is a variable?

1. 5
2. Number of months in a year
3. Number of days in a week
4. Temperature of a place in a day at different times

Q. Choose the expression with exactly one variable.

1. 2a + b - 7
2. a + 2
3. 1
4. a + b + c