The right triangle has one angle = 60° and the second, 30°, then it is also a semi equilateral one & the side (y) opposed to the angle of 30° is equal to half of the hypotenuse (x).
Calculate x by Pythagoras:
x² = (5√3)² + y², but y = x/2==> y² =(x/2)² =x²/4
x² = 75 + x²/4 ==> 4x² = 300 + x²==> 3x²=300, x² =100 and x=10 and y =5
Answer:
it will be 36 (B)
Step-by-step explanation:
1/2(72+55)=36
hope this help!
Answer:
y = 5
Step-by-step explanation:
The answer would be (-6,5)
Answer:
Step-by-step explanation:
Notice that each new term in the arithmetic sequence 1, -1, -3, ... is 2 less than the previous term. Thus, the common difference is -2.
The formula for this sequence is a(n) = 1 - 2(n - 1), or a(n) = 3 - 2n