Cho had $2.85 in nickels and $3.40 in dimes. Then she gave an equal number of her nickels and dimes to her brother. Now Cho has the same amount of money in nickels as in dimes.

The equation 285 -5x = 340 - 10z represents the situation.

Which does the variable x represent?

A

number of dimes Cho had

B

number of nickels Cho gave her brother

C

value of the dimes Cho gave her brother

D

how many more nickels than dimes Cho had

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.