Prove that for all integers a and b, if a mod 7 = 5 and b mod 7 = 6 then ab mod 7 = 2.

There are twenty one adults in line at a movie theater. that is three times the number of children in line. how many children were in line.

Which of the following are equal to 2 x the square root of 49 (there is more than one answer) A. 169 B. 98 C. 14 D. 98 square root E. 196 square root F. 49

Suppose the scores on a history quiz are normally distributed with a mean of 73 and a standard deviation of 4. Which group describes 16% of the population of history quiz scores? A. scores below 65 B. scores below 75 C. scores above 77 D.

Determine whether the statement is always, sometimes, or never true. Two lines with positive slopes are parallel.

1/3 x 1/4 what is the answer Show working out

the total cost of a pair of shoes is $85.86. What was the cost of the shoes before the 8% sales tax was added?

The sum of two numbers is fifteen. One number is three less than the other. Find the numbers.

Which values for x and y make the statement, (x+4) (y-1) = 0, true? A) x = - 4, y = 1 B) x = - 4, y = - 1 C) x = 4, y = 1 D) x = 4, y = - 1

High Street dog 28 of your muffins that was 7 out of 10 of all of them how many are left

Which numbers below represents a repeating decimal? -2/3, - 3/5, 3/10, 11/20