Jus look at the picture
2 answers:
Answer:
between 0 and 1
Step-by-step explanation:
The big key to this is that the negative sign in front of the two is NOT in parentheses along with the 2.
We follow the order of operations - PEMDAS - parentheses, exponents, multiplication and division, addition and subtraction.
So, inside the parentheses, the <u>first </u>thing we do is the <u>exponent</u>. We raise 2 to the third power and get 8.
Next, still inside the parentheses, we now multiply by negative 1. That is what putting a negative sign in front of something really is - multiplying by -1.
So now inside the parentheses, we have -8.
-8 raised to the power -2 is one over (-8) raised to the power positive 2.
That is one over 64,
That is more than zero, but less than one.
I have the math written out in an attached picture (I hate the equation writer on this website.) Haha.
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Answer:
4 minutes.
Step-by-step explanation:
There are three trains that Rachel has to take to go to her job. The total time is taken by her, on average, 1 hour and 20 minutes i.e. (60 + 20) = 80 minutes.
In his journey, she walks for 15 minutes and a train journey for about 53 minutes.
Then the total waiting time for the trains is (80 - 53 - 15) = 12 minutes.
Therefore, the average waiting time, in minutes, at each of the three train stations will be minutes. (Answer)
Answer:
stress on the cable is 61.312mpa
If steel is used, extension will be 0.91968mm
If polypropylene is used, extension will be 0.1532mm
Step-by-step explanation: detailed explanation and calculation is shown in the image below
Answer:
13510 ft
Step-by-step explanation:
I have attached a triangle diagram to depict this situation.
From the diagram, we see that distance between A and B is denoted by x.
Now, from trigonometric ratios in this type of triangle, let's first find y.
6400/y = tan 36
y = 6400/tan 36
y = 8808.84 ft
Now, we can find x from;
6400/(8808.84 + x) = tan 16
6400/tan 16 = 8808.84 + x
22319.452 = 8808.84 + x
x = 22319.452 - 8808.84
x ≈ 13510 ft
