Answer:
6.7 days
Step-by-step explanation:
If t is the time the faster roofer takes, then the slower one takes 3t. Their combined rates in roofs per day are ...
1/t + 1/(3t) = 1/5
4/(3t) = 1/5 . . . . . . combine terms
t = 5(4/3) = 20/3 ≈ 6.7 . . . . multiply by 5t
The faster roofer working alone can roof a house in about 6.7 days.
Is there more information? You have to do a (48+18) to do this.
a is a variable which is any number.
Answer:
90+30+2x=180
Step-by-step explanation:
2x is an angle, so we need to find its measure
square symbol at corner of triangle means 90 degrees
we know the angle at the top corner is 30 degrees
the sum of all the angles in a triangle is 180 degrees
so the sum of 90 degrees, 30 degrees, and 2x degrees is 180 degrees
translate it to mathematical format: 90+30+2x=180
Answer:
5
Step-by-step explanation:
The mean is 6 and there are 5 intergers.
You'd multiply 5*6=30. That means that the sum is 30.
The values could be: 2 3 7 9 9
These values add up to 20
Have a mode of 9
Have a median of 7
Have a mean of 6
To find the range you would subtract 9 and 2. That gives you 5.
(i don't know if that's the greatest possible range. But 5 would be the range here)