A=1/2bh
b=8+h
A=384
384=1/2(bh)
times 2
768=bh
sub
768=b(8+b)
768=8b+b^2
minus 768 both sides
0=b^2+8b-768
factor
0=(b-24)(b+32)
set to zero
b-24=0
b=24
b+32=0
minus 32
b=-32
false, legnths cannot be negative
b=24
24=8+h
minus 8
16=h
base=24ft
altetude=16ft
Answer:
d= 42
Step-by-step explanation:
Isolate the x. Do the opposite of PEMDAS.
−4 ≤ 11 −3x
First, subtract 11 from both sides
-4 (-11) ≤ 11 (-11) - 3x
-4 (-11) ≤ - 3x
-15 ≤ - 3x
Isolate the x. Divide -3 from both sides. Remember to flip the sign.
(-15)/-3 ≤ (-3x)/-3
-15/-3 ≤ x
5 ≥ x
x≤5 is your answer
hope this helps
The trigonometric expression sin 30° will be equal to cos 60°. Then the correct option is E.
<h3>How to convert the sine of an angle to some angle of cosine?</h3>
We can use the fact that:
sin(θ) = cos(90 - θ)
To convert the sine to cosine (but the angles won't stay the same unless it's 45 degrees).
The trigonometric expression sin 30° will be equal to
The sin 30° can be written as
sin 30° = cos(90° - 30)
sin 30° = cos 60°
Then the correct option is E.
Learn more about sine to cosine conversion here:
brainly.com/question/1421592
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