Question:
Twice the difference of a number and 5 is equal to 9 .
Answer:
Step-by-step explanation:
Required
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Let the number be x
Twice the number, x is
The difference between (above) and 5 is
This equals to 9.
So, the expression becomes
Solving further:
Divide through by 2
<em>Hence, the number is 7</em>
Answer:
6
Step-by-step explanation:
H is proportionate to L, meaning that they can be represented as a ratio, .
If we know that L in the same ratio is 20, we can set these ratio's equal to each other to find H.
.
To find x, we can cross multiply.
So , meaning that when
,
.
Hope this helped!
Answer:
Step-by-step explanation:
The angle is located in Quadrant II.
From trigonometry, we know that:
Now, in Quadrant II,
Therefore, the Adjacent angle to
Therefore:
