The correct answer is a , i hope this helps out
P=2(L+W)
A=LW
given
P=62
62=2(L+W)
divide 2
31=L+W
minus W
L=31-W
sub into other one
A=LW
A=(31-W)(W)
228=31W-W^2
times -1
W^2-31W=-228
add 228 both sides
W^2-31W+228=0
factor
what 2 numbers multiply to get 228 and add to get -31
-19 and -12
(W-19)(W-12)=0
set to zero
W-19=0
W=19
W-12=0
W=12
sub back
L=31-W
L=31-12
L=19
or
L=31-19
L=12
the doorway is 12in by 19in
Using the SSA formula:
X = SQRT ( 40^2 + 26^2 - 2*40*26*cos(65))
X = SQRT(2276 - 2080*cos(65))
X = SQRT(1396.954)
X = 37.37 = 37.4 ft.
It looks to be 29, if the rule is to add 3z
What should be my first step when subtracting integers is to .A.add the opposite.
<h3>What are the
step to follow in order to subtract integers?</h3>
To perform this operation first number must be kept as the minuend, and then then change the operation from subtraction to addition.
Then proceed with the regular addition of integers, hence What should be my first step when subtracting integers is to add the opposite.
Read more on integers here:
brainly.com/question/17695139
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