Answer: 
Step-by-step explanation:
Given
Sean paints
of a fence in 1 hour
Sean paints
part less in the second hour
So, fraction he paints in the second hour = 
Paint in 2 hours = 
=
No, he did not finish his job
Answer:
Step-by-step explanation:
Joe drinks 10 litres every week
19 litres = 5 gallons
3 weeks = 10 * 3
= 30 litres
30 litres to gallons
= 30/19
= 1.578 gallons
Nearest whole number = 1.6 gallons
Answer:
False
Step-by-step explanation:
Given a line with slope m then the slope of a line perpendicular to it is
= - 
Given a line with m = 
Then the slope of the line perpendicular to it is
= -
= - 
Answer:
9,7,2
Step-by-step explanation:
Answer:
y= 35⁰
x = 55⁰
Step-by-step explanation:
total angle of triangle is 180⁰
therefore we can equate:
x + (x-20) + 90 = 180
2x + 70 = 180
x = 55⁰
total of x and y is equal to 90⁰ since it is a right angle;
x + y = 90
x = 55⁰
55⁰ + y = 90
y = 35⁰