221 + X equals 386 right and solve an addition equation to find how many trading cards are Levi's

Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16 seconds. Thus, 99.7% of running times are approximately between: A. 61 and 125 seconds B.

What are the prime numbers between 20 and 70

Could a quadrilateral have 4 obtuse angles?

22. What are the solutions of the equation? x8+4=0 a. No solution b. x = - 32 or x = 32 c. x = - ½ or x = ½ d. x = - 2 or x = 2

A cone has a diameter of 6 cm and a height of 11.5 cm. Find the volume. Round your answer to the nearest 10th if necessary. Use 3.14 for pie.

The factor theorem of algebra states that if a polynomial, P (x), is divided by x-a, then the remainder is P (a). Verify the remainder theorem by showing that when x^2-2x-16 is divided by x+3 the remainder is the same as P (-3).

Jane cuts a piece of twine into three pieces. The second pieces is 7 times as long as the first piece, and the third piece is 5 feet longer than the first piece.

Meg has a piece of poster board that is two and two-fifths feet wide. she needs to fold it into three equal sections. how wide will each section be? two-thirds feet four-fifths feet six and two-fifths feet seven and one-fifth feet

If the hot dog eating champion's goal is to eat 1 hot dog every 13 seconds, how many whole hot dogs does he expect to eat in 12 minutes?

What is (8-2x2) to the power of two equal using pemdas?