Answer:
81:324
Step-by-step explanation:
3+12=15
405 div 15 =27
3 times 27 = 81
12 times 27 = 324
81:324
The value of x is 5.
2x + 20 = 15 + 3x
Group like terms, change its signs.
2x - 3x = 15 - 20
-1x = -5
-1x/-1 = -5/-1
x = 5
To check: substitute x by its value. x = 5
2x + 20 = 15 + 3x
2(5) + 20 = 15 + 3(5)
10 + 20 = 15 + 15
30 = 30
To find the length of the skateboard ramp, we need to look at the triangle where the length of the skateboard ramp is a hypotenuse, a horizontal distance is a leg and a vertical distance is a leg also. So we can use Pythagorean theorem.
c² = a² + b²
c² = 17² + 4² = 305
c=√305≈17.46
Answer is 17.46 feet.
16/5 is called an improper fraction -- the numerator is larger than the denominator. You can convert this to a mixed number; a whole number and a proper fraction.<span>To convert, realize that a fraction can be thought of as division, so we divide 16 by 5. 5 goes into 16 3 times with a remainder of 1. So you cna think of 16/5 as 15/5+1/5. ((3*5)/5+1/5 )</span>