-8 - 5n = 64 + 3n
+5n +5n add 5n to both sides, 5n's cancel out on the left.
______________
-8 = 64 + 8n
-64 -64 subtract 64 on both sides, 64's cancel out on the right.
______________
-72 = 8n
___ ___ divide 8 on both sides, 8's cancel out from the right.
8 8
n= -9, final answer
Answer:
She earns $4 x is representing the hours.
Step-by-step explanation:
16 is the charge up front.
I can infer that the additional charge is $4 because x represents the hours because we don't know how many hours she's going to spend there.
Hope this helps! <3
Answer:
B
Step-by-step explanation:
|-4 + 1| = |-3| = 3
|-4 - 1| = |-5| = 5
The distance is 5, so the second equation should represent the problem.
You need to add 5d with 5d then add the d to it for it to get the length and the width
Answer:
Part A
71°
Part B
The ladder is been used safely
Step-by-step explanation:
Part A
We solve the above question using Trigonometric function of Cosine
cos x = Adjacent/Hypotenuse
Adjacent = The distance between the house and the bottom of the ladder = 4 feet
Hypotenuse = Length of the ladder = 12 feet
x = Angle
Hence:
cos x = 4/12
cos x = 1/3
x = arc cos (1/3)
x = 70.528779366°
Approximately to the nearest degree
= 71°
Part B
According to the manufacturer, if the angle the ladder forms with the ground, x, is between 70° and 75°, then it meets safety standards. Is this ladder being used safely?
Angle x = 71°
Therefore, the ladder is been used safely
