Chapter 2: Q25. (page 108)
Solve the equation using mental math.
Short Answer
Value of given equation is .
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Chapter 2: Q25. (page 108)
Solve the equation using mental math.
Value of given equation is .
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Evaluate the expression using the distributive property and mental math.
Use the distributive property to evaluate the expression.
Evaluate the expression when.
Extended Problem Solving For a cylindrical corn silo with the dimensions shown, the weight W (in pounds) of the corn silage inside is typically given by , where d is the distance (in feet) from the top of the corn to the top of the silo.

a. Use the distributive property to write the given formula without parentheses.
b. Calculate Suppose d 15 feet. What is the weight of the corn in the silo?
c. Interpret and apply how many days will the amount of corn from part (b) last if it is used to feed a herd of 100 cows and each cow eats 10 pounds of corn a day?
ant Pumpkins A giant pumpkin can be difficult to weigh directly on a scale. To estimate the weight, you can first measure the distances a, b, and c (in inches) as shown below. The weight W (in pounds) can then be approximated using the formula .

a. Use the distributive property to write the given formula without parentheses.
b. For a certain pumpkin, inches, inches, and inches. Approximate the weight of the pumpkin to the nearest pound
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