a girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

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.

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?

17 is 3 times the difference between 4 times a number and 5. find the number