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Satkriti Roao
@satkriti-roao
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Joined: Jun 14, 2021
Last seen: Aug 6, 2021
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Topics: 2248 / Replies: 1
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Topic
Compare the sun and fossil fuels as sources of energy.
4 years ago
Forum
Sources of Energy
Replies: 0
Views: 80
Topic
(a) What is the difference between a thermal power plant and a hydropower plant? (b) Which of the two causes serious air pollution and how?
4 years ago
Forum
Sources of Energy
Replies: 0
Views: 95
Topic
Fill in the following blanks with suitable words : A solar cell converts………. energy into…………. energy.
4 years ago
Forum
Sources of Energy
Replies: 0
Views: 350
Topic
The denominator of a rational number is greater than its numerator by 8. If the numerator is increased by 17 and the denominator is decreased by 1, the number obtained is 3/2. Find the rational number.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 126
Topic
The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. Find their present ages.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 447
Topic
Solve the following equations. 1. (8x – 3)/3x = 2 2. 9x/(7 – 6x) = 15 3. z/(z + 15) = 4/9
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 331
Topic
Solve the following linear equations. 1. m – (m – 1)/2 = 1 – (m – 2)/3 2. 3(t – 3) = 5(2t + 1) 3. 8. 15(y – 4) –2(y – 9) + 5(y + 6) = 0
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 334
Topic
Solve the following linear equations. 1. x/2 – 1/5 = x/3 + 1/4 2. n/2 – 3n/4 + 5n/6 = 21 3. x + 7 – 8x/3 = 17/6 – 5x/2
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 196
Topic
Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present ages.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 162
Topic
A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find their present ages.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 469
Topic
Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 449
Topic
Hasan buys two kinds of cloth materials for school uniforms, shirt material that costs him ₹50 per metre and trouser material that costs him ₹90 per metre.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 173
Topic
There is a narrow rectangular plot, reserved for a school, in Mahuli village. The length and breadth of the plot are in the ratio 11 : 4.
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 143
Topic
Shobo’s mother’s present age is six times Shobo’s present age. Shobo’s age five years from now will be one third of his mother’s present age. What are their present ages?
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 153
Topic
One of the two digits of a two-digit number is three times the other digit. If you interchange the digits of this two-digit number and add the resulting number to the original number, you get 88. What is the original number?
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 398
Topic
Sum of the digits of a two-digit number is 9. When we interchange the digits, it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 488
Topic
A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers?
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 135
Topic
Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 395
Topic
Solve the following equations and check your results. 1. 8x + 4 = 3 (x – 1) + 7 2. x = 4/5 (x + 10) 3. 2x/3 + 1 = 7x/15 + 3 4. 2y + 5/3 = 26/3 – y 5. 3m = 5m – 8/5
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 476
Topic
Solve the following equations and check your results. 1. 3x = 2x + 18 2. 5t – 3 = 3t – 5 3. 5x + 9 = 5 + 3x 4. 4z + 3 = 6 + 2z 5. 2x – 1 = 14 – x
4 years ago
Forum
Linear Equations in One Variable
Replies: 0
Views: 509
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