Answer:
-11
Step-by-step explanation:
Answer:
Option D.
Step-by-step explanation:
Juanito estimated that 31% of 517 is 204 is estimated wrong because
31% of 517 = 0.31 × 517 = 160.27
Now we will go through all the options.
A. 30% of 520 = 0.30 × 520 = 156
B. 40% of 520 = 0.40 × 520 = 208
C. 30% of 510 = 0.30 × 510 = 153
D. 40% of 510 = 0.40 × 510 = 204
Option D.
Step-by-step explanation:
How to find x:
tan(45)= 5/x
x = 5/tan(45) [Find on calculator]
How to find y:
Pythagoras' theorem:
a² + b² = c²
5² + x² [value found in first part] = y²
Square root the sum of 5² + x² and the y²
The answer of the square root of the sum is the value of y