Suppose a brand of lightbulbs is normally distributed with a mean life of 1900 hours and a standard deviation of 50 hours. Find the probability that a lightbulb will last between 1825 hours and 1980 hours

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What does 5a-2/3 equal

Kana opens a bank account with $200. The account accrues 10% interest. How much money will kana have in her account at the end of two years?

Solve for m. -3/7m = 12 What is the answer? A. - 28 B. - 26 C. 26 D. 28

Linda has a rectangular cardboard of length 78 cm and perimeter 268 cm. She cuts a part of the cardboard to make a cubical box 15 cm long. What is the area of the cardboard left?

How is 3*7 and 6*7 related

The weight of the candy that Eric collected was one thousand six hundred thirty-four grams more than the weight of the candy Timothy collected. Timothy collected three and eight hundred forty-five grams of candy. how much candy did Eric collect?

What is (-4) to 5th power simplified

Angles A and B are complementary. Explain how to find the measure ofAngle BifAngle A has a measure of 36°.

The number of calories in 5 cups of yogurt is 750. What proportion can you set up to determine the number of calories, c, in 9 cups of yogurt?