Given :
A man 1.30 m tall is on a top of a building. He observed a car on the road at an angle of 60 degrees if the building is 30 m high.
To Find :
How far is the car from the building.
Solution :
Let, distance between car and the building is x m.
So,
Hence, this is the required solution.
Answer:
David find <u>8</u> quarters.
Step-by-step explanation:
Given:
David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters.
The collection of nickels and quarters totaled to 2.6.
Now, to find the quarters David find.
Let the number of nickels be
And the number of quarters be
Thus, the number of nickels and quarters he found:
⇒ .........( 1 )
The totaled of nickels and quarters:
(As 1 nickel=$0.05 and 1 quarter=$0.25)
Now, putting the equation ( 1 ) in the place of we get:
⇒
⇒
<em>Subtracting both sides by 1 we get:</em>
⇒
<em>Dividing both sides by 0.20 we get:</em>
⇒
So, the quarters = 8.
Therefore, David find 8 quarters.