the table shows the cost of apples, given the number of pounds purchased. Pounds (lb) Cost ($) 2 5.00 5 12.50 8 20.00 11 27.50 A
1 answer:
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Approximated: 
cm
Exact:
or 
Explanation:
It's always best for these types of questions to visualise it. A right triangle has base angle of 90°. Mark in what you know, and leave out the rest. Notice how the question doesn't ask for a hypotenuse. This means that you might be using the tangent function as the tangent function also doesn't require a hypotenuse.
So now, you have a side of 12cm, with the corresponding 39° angle marked.
To find the missing length, you can use the tangent function to approximate the length:
(opposite/adjacent)
Now, isolate the variable, x:
(exact form)
cm (approximated to 1 decimal place)
Exact:
Explanation:
It's always best for these types of questions to visualise it. A right triangle has base angle of 90°. Mark in what you know, and leave out the rest. Notice how the question doesn't ask for a hypotenuse. This means that you might be using the tangent function as the tangent function also doesn't require a hypotenuse.
So now, you have a side of 12cm, with the corresponding 39° angle marked.
To find the missing length, you can use the tangent function to approximate the length:
Now, isolate the variable, x:
Hello there!
9 - 12r > -99
-12r > -108
r
9 is your first inequality.
-2r - 4 < -12
-2r < -8
r
4 is your second inequality.
I hope this helps!
9 - 12r > -99
-12r > -108
r
-2r - 4 < -12
-2r < -8
r
I hope this helps!