Step-by-step explanation:
the question is z²=1
taking square root on both sides
√z² = √1
the square root and the square cancel out each other
it gives
z=±1
that means either z=+1 or z=-1
so the solutions are 1 and -1
Answer:
The answer to your question is the height of the lamp is 18.2 ft
Step-by-step explanation:
Data
Street lamp shadow = 31.5 ft
Street sign height = 8 ft
Street sign shadow = 14 ft
Street lamp height = x
Process
1.- To find the height of the lamp use proportions. In this kind of problem, we do not look for the length, but the shadow.
Street lamp height/street lamp shadow = street sign height/street sign
shadow
Substitution
x / 31.5 = 8 / 14
Solve for x
x = (31.5)(8) / 14
Simplification
x = 254.4 / 14
Result
x = 18.2 ft
Whoever does paper homework, This is what you do:
Get your homework out. Example: Math or something
Find a word problem and google the exact problem with no lower case at the beginning
When you google that problem, You will most likely find PDFs. Look through the PDFs. One pdf may have only your problem's answer or one pdf may have answers for the whole page! or even a lesson.
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The slope is 3/2 and the y-intercept is 0.
Slope is rise/run or y/x. The y-intercept is the value of y when the value of x is 0.
Answer:
The third choice is the one you want
Step-by-step explanation:
The solutions are found where the graphs intersect each other, which is in 3 places. We are only worried about the x values here. It appears that they cross, on the far left, at x = -2, in the middle at x = .5, and on the far right at x = 3.5
