Which phrase best describes a rock? A. a chemical arranged in a lattice B. a gabbro of minerals C. a mixture of crystals D. a fire-formed crystal

Rational number of - 21

4n - 9 = - 9 how do u solve?

6 more than the difference of b and 5

Factor 15a + 21b. Group of answer choices 3 (15a + 21b) 3 (5a + 7b) 3ab (5 + 7) 36ab

At $ 0.49 per bushel, the daily supply for wheat is 409 bushels, and the daily demand is 589 bushels. When the price is raised to $ 0.85 per bushel, the daily supply increases to 529 bushels, and the daily demand decreases to 229 bushels.

Box contains 6 transistors, 5 of which are defective. If 5 are selected at random, find the probability that a. All are defective. b. None are defective.

If two line segments are congruent, which following must be true?

3 (2x+1) = -5-5+3x solve the problem

Baileigh is using a piece of string to hang a painting on the wall. The back of the painting is diagrammed below. 36 cm 36 cm 15 cm 15 cm Note: Figure is not drawn to scale. What is the length of the string?

What is trigonometry?