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What approximate value will come in plac...

What approximate value will come in place of question mark (?) in the following questions? (You are not excepted to calculate the exact value.)
`(9.99)^2+13.03xx3.98-(5.01)^3=?-120`

A

130

B

124

C

147

D

167

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equation `(9.99)^2 + 13.03 * 3.98 - (5.01)^3 = ? - 120`, we will approximate the values and simplify step by step. ### Step 1: Approximate the values - Approximate \( 9.99 \) to \( 10 \) - Approximate \( 13.03 \) to \( 13 \) - Approximate \( 3.98 \) to \( 4 \) - Approximate \( 5.01 \) to \( 5 \) ### Step 2: Substitute the approximated values into the equation The equation now looks like: \[ (10)^2 + (13) \times (4) - (5)^3 = ? - 120 \] ### Step 3: Calculate the squares and cubes - Calculate \( (10)^2 = 100 \) - Calculate \( (5)^3 = 125 \) ### Step 4: Substitute these values back into the equation Now we have: \[ 100 + (13 \times 4) - 125 = ? - 120 \] ### Step 5: Calculate \( 13 \times 4 \) - Calculate \( 13 \times 4 = 52 \) ### Step 6: Substitute this value back into the equation Now the equation is: \[ 100 + 52 - 125 = ? - 120 \] ### Step 7: Simplify the left side Calculate: \[ 100 + 52 = 152 \] Then: \[ 152 - 125 = 27 \] So we have: \[ 27 = ? - 120 \] ### Step 8: Solve for ? Add \( 120 \) to both sides: \[ 27 + 120 = ? \] Thus: \[ ? = 147 \] ### Final Answer The approximate value that comes in place of the question mark (?) is **147**. ---
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