Answer:
9
Step-by-step explanation:
Answer:
Check attachment below
Step-by-step explanation:
To do this :
we know the graph will cross the y axis at -9 (because of the y-intercept)
And we can work out the x-intercept by making y=0 and solving for x.
This gives us 15
Check graph below for the answer
Answer:
The estimate is not correct?
Step-by-step explanation:
Given data
Area of wall = 18*8
=144ft^2
=4*144
=576ft^2
Area of doors
=3*7
=21ft^2
=2*21
=42ft^2
Area of window
=3*5
=15ft^2
Hence the total surface area of the room
=576-42-15
=519ft^2
The amount of paint needed= 519/300= 1.73
Approximately 2 gallons
We are told that 1 gallon will cover 300ft^2
Hence 3 gallons will cover 300*3= 900ft^2
Therefore the painter overestimated the amount of paint needed
As 2 gallons will do the job
Answer:
115
Step-by-step explanation:
angle DEF is an inscribed angle and arc DF is the arc it intercepts
if you didn't know an inscribed angle is equal to half the measure of the arc it intercepts
Hence angle DEF = 1/2 of arc DF
If arc DF = 230 then angle DEF = half of 230 or 230/2
230/2=115
Hence angle DEF = 115
Answer:
The volume of the pyramid is
Step-by-step explanation:
we know that
The volume of the pyramid of the figure is equal to
we have
----> the height must be perpendicular to the base
substitute