Terms of an Expression

Q.

Form expressions using y, 2 and 7. Every expression must have y in it. Use only two operators out of addition, multiplication, subtraction and division.

Q.

A wholesale merchant wants to start the business of cereal with $\mathrm{RS}24000$. Wheat is $\mathrm{RS}400$ per quintal and rice is $\mathrm{RS}=600$ per quintal. He has the capacity to store $200$ quintal cereal. He earns the profit of $\mathrm{RS}25$ per quintal on wheat and $\mathrm{RS}40$ per quintal on rice. If he stores x quintal rice and y quintal wheat, then maximum profit of the objective function is

1. $25x+40y$

2. $40x+25y$

3. $400x+600y$

4. $\frac{400}{40}x+\frac{600}{25}y=$

Q.

Give expression for :

$p$ divided by $7$

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

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

Q.

Question 48

Answer True/False.

In the equation 7k - 7 = 7, the variable is 7.

Q.

State the number of terms in each of the expression:​

​$2x+y+8÷y$

Q.

Describe Introduction To Algebra

Q. Raju's age is 5 more than twice of Ram's age. If Ram's age is represented by $x$, the expression which represents Raju's age is

1. $2x$
2. $2x+5$
3. $5x+2$
4. $2x+2$

Q. Which of the following are not equations?why?
13x- 1=25
(12+5)+3= 20
X-10<10

Q.

Identify the like terms in the following.

$abc,bac,cab,a{b}^{2}c,ac{b}^2$

Q. State the number of terms in each of the expression:​
$3x-\frac{x}{p}$

Q. A mobile operator charges ₹ 0.15 per minute for local calls and ₹0.23 per minute for long distance calls. Which expression gives the total cost in rupees for "$x$" minutes of local calls and "$y$" minutes of long distance calls?

1. ₹$\text{(}0.15x+0.23y)$
2. ₹$\text{(}0.15x-0.23y)$
3. ₹ $\text{0}.38(x+y)$
4. ₹ $\text{0}.28xy$

Q.

Identify the pairs of like terms :

$$\begin{gathered} 5x,-11y;3ab,2a{b}^2, \\ -11mn,9mn;2xyz,-6yzx; \\ 3m^{2}n,2m{n}^{2}and7x,5xy \end{gathered}$$

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

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

Q.

Question 69

In the following question, state whether the statement is True (T) or False (F):

An equation is true for all values of its variables.

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

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

Q. A telephone company charges ₹0.05 per minute for local calls and ₹0.12 per minute for long distance calls. Which expression gives the total cost in rupees for "$x$" minutes of local calls and "$y$" minutes for long distance calls?

Q. Raju's age is 5 more than twice Ram's age. If Ram's age is represented by $x$, the expression which represents Raju's age is

1. $2x$
2. $2x+5$
3. $5x+2$
4. $2x-5$

Q. How many variables are there in the given equation 3w + 4x + 6y = 5?

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

Q.

What are variables? Why should I even use them instead of numbers and words?

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

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

Q. + , - , $\times$, $÷$ are arithmetic operators

1. False
2. True

Q.

Write the following statements as algebraic expressions :

Twice the difference of $t$ and $8$

Q. Raju's age is 5 more than twice of Ram's age. If Ram's age is represented by x, then the expression which represents Raju's age is ______.

1. 2x
2. 5x + 2
3. 2x - 5
4. 2x + 5

Q. A telephone company charges ₹0.05 per minute for local calls and ₹0.12 per minute for long distance calls. Which expression gives the total cost in rupees for "$x$" minutes of local calls and "$y$" minutes of long distance calls?

1. $0.05x-0.12y$
2. $0.17(x+y)$
3. $0.17xy$
4. $0.05x+0.12y$

Q. How many variables are there in the given equation 3w + 4x + 6y = 5?

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

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

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

Q. How many variables are there in the given equation 3w + 4x + 6y = 5?

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

Q. A mobile operator charges ₹ 0.15 per minute for local calls and ₹0.23 per minute for long distance calls. Which expression gives the total cost in rupees for "$x$" minutes of local calls and "$y$" minutes of long distance calls?

1. ₹$\text{(}0.15x+0.23y)$
2. ₹$\text{(}0.15x-0.23y)$
3. ₹ $\text{0}.38(x+y)$
4. ₹ $\text{0}.28xy$

Q.

The cost of two red balls and five blue balls is ₹160. Then find the correct equation for this situation among the given options.
$(r:\text{price of one red ball})$
$(b:\text{price of one blue ball})$

1. $2r+5b=₹160$
2. $3r+5b=₹160$
3. $r+5b=₹80$
4. $2r-5b=₹160$