It’s false because if you take a negative number away from another negative number it would give you another negative number not a positive number!
Answer:
9
Step-by-step explanation:
first, turn both fractions into improper
turn it into multiplication
simplify
Answer:
29 cans
Step-by-step explanation:
To solve this problem we must use Heron's formula; A = 
S = 1/2 the perimeter of the given triangle
a, b, c = the measurements of the three given sides
The first step to solving this question is first finding the perimeter.
P = 65m + 74m + 67m
P = 206m
Now that we have our perimeter, we must divide P by 2 to get S.
S = 206/2
S = 103
Now we plug our numbers into Heron's formula.
A = 
A = 
A = 
A = 
A = 
Find the square root of this number.
A ≈ 2021.43909134... m²
If a can of paint covers 70 square meters, then you will need to figure out how many cans you need. This can be done by dividing the overall area of the triangle by the area that a single can of paint can cover.
= 28.8777013049...
We know we can't buy 28.87... of a can (people simply do not sell parts of cans or half-full containers... unless its a bag of lays chips and their 80% air nonsense...) so we must round up to the nearest whole number.
28.87... = 29
Thus we finally have our answer: 29 cans of paint!
Step-by-step explanation:
here your answer
above photo is your answer
Answer:
The area of rectangle BEFD is 180 square units.
Step-by-step explanation:
After checking the figure given, we have the following information:
,
,
, 
By Pythagorean Theorem, we determine the length of the line segment BD:
(1)


In addition, we know the following characteristics of the rectangle BEFD:
,
,
(2), (3), (4)
By Pythagorean Theorem:
(5)
(6)
By (3), (4), (5) and (6):
(7)
(8)
By (7) in (8):



Then, we clear
:


If we know that
,
and
, then the length of the segment
is:

And the length of the line segment
is:



And the length of the line segment
is determined by Pythagorean Theorem:



And the area of the rectangle is determined by the following formula:



The area of rectangle BEFD is 180 square units.