Course challenge

Question 1

Bilal is assembling a set of bunkbeds and wants to make sure the support posts are perpendicular to the floor. He measures that the posts are 165 centimeters tall and 220cm apart. How long should the diagonal measurement be, in cm if the support posts are perpendicular to the floor?

Choose 1 answer:
A - 75
B - 130
C - 275
D - 385

Answer 1

C)
a^2 + b^2 = c^2
165^2 + 220^2 = (square root) 75625
The diagonal should be 275CM

Question 2

What is the slope of the line represented by the equation 2x - 5y = 9?

Answer 2

We can determine the slope of the graph by bringing the equation to slope-intercept form. So let’s solve the equation for y:

2x - 5y = 9
2x - 9 =5y
0.4x - 1.8 = y
The slope is 0.4