Advertisements
Advertisements
प्रश्न
Set up an equation in the following case:
The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. (Take the lowest score to be l.)
Advertisements
उत्तर
Let the lowest marks be l.
2 × Lowest marks + 7 = Highest marks
2 × l + 7 = 87
2 l + 7 = 87
APPEARS IN
संबंधित प्रश्न
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| 5x = 25 | x = 0 |
Add 2xy, 5xy, −xy
Simplify:
(a2 + b2 + 2ab) − (a2 + b2 −2ab)
Simplify:
12x − [3x3 + 5x2 − {7x2 − (4 − 3x − x3) + 6x3} − 3x]
Write the following statement as an equation:
Twice a number subtracted from 19 is 11.
Solve the following equation by the trial-and-error method: x − 7 = 10
Solve the following equation and verify the answer:
6(1 − 4x) + 7(2 + 5x) = 53
Solve the following equation and verify the answer:
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
5 × 4 − 8 = 2x
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
2m < 30
