An acute angle is in a right triangle with cos 9/10. What is the value of sec?

What I so badly want to know is the answer to the impossible question of 2 + 1

Jaidee paid $2 for a fruit drink. She now has $19. With how much money did she start?

Luis found 2 bicycles he likes. the first bicycle was $73.59. the second one was $98.50 Estimate the difference in the prices of the bicycles.

A cook has 2 2/3 cup of flour. a recipe calls for 2 3/4 cups of flour. does the cook have enough flour? if not, how much more flour is needed?

Which digit is in the hundredths place? 462.139

1. Write an equation of an ellipse in standard form with the center at the origin and with the given characteristics. vertex at (-3,0) and co-vertex at (0,2) A) x^2/9 + y^2/4 = 1 B) x^2/4 + y^2/9 = 1 C) x^2/3 + y^2/2 = 1 D) x^2/2 + y^2/3 = 1 2.

An RV leaving Canada is stopped at customs at the border and weighed. The scale shows a reading of 2.5 tons. What is the weight of the RV in tonnes?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,

the width of a rectangle is 3cm less than the length. The area of the rectangle is 54cm^2. find the width and length

Combine like terms: 16y+8x-7*+8y-2y^2=