-18x
you first times the numbers, which becomes -18
Next you add the exponent from the veriables (x) (if you're diving you're subtractiong example: x^a/x^b = x^a-b)
Sooo when you add them you get 8-7=1 which means.. x^1 (but you don't need to put the 1)
-18x
Answer:
- The car makes a complete revolution in 12 s.
Step-by-step explanation:
The table header tells you the distances are <em>feet</em> (not yards). The maximum height is 55 feet, and the lowest point is 5 feet. The difference between these values is the diameter of the wheel, 50 feet, so the radius is 25 feet.
The wheel goes from its highest point to its highest point in 15 -3 = 12 seconds, so that is the time required for a complete revolution.
Answer:
There are 221 mile to be covered , with every 14 miles travelled with one gallon .
221/14 is 15.7 , which is 16
So , its option C
Answer:
1. AC = 5 cm
2. CD = 10.7 cm
Step-by-step explanation:
Looking at the left triangle, we see that AC is the side "opposite" of the angle given and AB is the "hypotenuse".
Which trigonometric ratio relates "opposite" to "hypotenuse"?
<em>Yes, that's SINE.</em>
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So we can write:
We know from 30-60-90 triangle, Sin(30) = 0.5, so we have:
Thus,
AC = 5 cm
Now, looking at right side triangle, we know AC, side "opposite" and we want to find CD, side "adjacent". Which trig ratio relates these 2 sides?
<em>Yes, that's tan!</em>
Thus we can write:
Now using calculator, we get our answer to be:
CD = 
So
CD = 10.7 cm
