Answer:
x = 14
Step-by-step explanation:
let the number be x.
- 4 times the number = 4x
- 10 added to 4 times the number = 4x + 10
now,
- 5 times the number = 5x
- 4 less than 5 times the number = 5x - 4
Given that,
4x + 10 = 5x - 4
moving all x terms to the LHS and the constants to the RHS
4x - 5x = -4 - 10
-x = -14
dividing both sides by -1
<u>x = 14</u>
This is a right triangle (hence the 90° angle), so you'd find the legs (both are the same length of a right triangle) by using Pythagoras Theorem (a2 + b2 = c2) Since you have the hypotenuse (6"), just go backwards. 62 = 36 = a2 + b2. Like I said before the legs are the same length so you can rewrite it as 36 = 2x2, where x = either a or b. Then just solve for x.
Answer:
Perimeter= 40
Area= 120.71
Step-by-step explanation: