Answer:
There is a total 50 questions.
Step-by-step explanation:
Let x = total questions in the exam
Since 82% of the test was scored correctly, that means 18% of the student's exam was scored incorrectly.
With this information we can write:
(Given that the student made 9 mistakes)
(divide 18% on both sides)

∴ There was a total of 50 questions in the examination.
answer:
$6.65
Step-by-step explanation:
He would earn 21 quarters in 3 weeks.
Because there are 7 days in a week: Multiply 7×3=21
21 quaters in dollars is equal to $5.25
So you add $1.40+$5.25=$6.65
Answer:
Easy,
1) To find the area you need to multiply. Therefore 10 x 4 = 40 square centimeters.
2) 20, why? A calculator online for area of a triangle, it really helps! :) just look up triangle area in the future.
Step-by-step explanation:
To get simplest form you make it the smallest fraction you can make it by dividing both sides by the same number until it's not possible anymore Hope that helped!
Answer:
229.23 feet.
Step-by-step explanation:
The pictorial representation of the problem is attached herewith.
Our goal is to determine the height, h of the tree in the right triangle given.
In Triangle BOH

Similarly, In Triangle BOL

Equating the Value of h

Since we have found the value of x, we can now determine the height, h of the tree.

The height of the tree is 229.23 feet.