Tìm giá trị nhỏ nhất 1/A=x^2+6x+15

2/B=x^2-10x+20

3/C=4x^2-12x+15

4/D=9x^2-12+1

5/E=x^2+4x

6/F=x^2-20x

7/G=4x^2-20x

Toán 9 ạ

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14

Simplify using positive exponents only.

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge