There are 12 boys and 8 girls in a hall, each holding coins in their hand. The mean number of coins for the children is 15

The mean number of coins for the boys is 13Work out the mean number of coins for the girls.

Solve for x. 2x + 9 = 33 What is the answer? A 7.5 B 12 C 21 D 84

Whats 1/5 + - 4 having trouble

Which of the following is the correct factored form of the given equation? 4x^2-25=0 a. (4x - 5) (x + 5) = 0 b. (2x - 5) (2x + 5) = 0 c. 2 (x - 5) ^2 = 0

Your uncle Jim lives in England, where the current exchange rate is 1.64 US dollars for each British pound. Solve for the amount of your monthly bill, to the nearest hundredth, if you lived in England.

Which type of validity has become the overriding objective in validity? a. construct validity b. discriminant validity c. predictive validity d. construct validity

Max ran 5 miles. 1 mile = 5280. What is the proportion formula used to determine how many feet?

What are the two shapes of cross-sections we could create by slicing the cone diagonal to its base? Choose 2 answers: a) circle b) triangle c) shape with two edges, one straight and one curved d) ellipse answer is c and d

Select the correct answer. height is the relationship Sam's height is 15 centimeters less than 2 times Martha's height. If Sam is 185 centimeters tall, and Martha between the heights can be represented by the equation 2x - 15 - 185.

Rational and Irrational Numbers what is it explain

Theorem: the sum of any two even integers equals 4k for some integer k. "proof: suppose m and n are any two even integers. by definition of even, m = 2k for some integer k and n = 2k for some integer k. by substitution, m + n = 2k + 2k = 4k.