62.8 is the correct answer. Hope this helps
Answer:
Add the numbers together and divide by the number of numbers. (The sum of values divided by the number of values). Arrange the numbers in order, find the middle number. (The middle value when the values are ranked).
Answer:
x + 4y = 13
x = -4y + 13....now we sub this into the first equation
2x - 3y = -29
2(-4y + 13) - 3y = -29 <=====
-8y + 26 - 3y = -29
-11y + 26 = -29
-11y = -29 - 26
-11y = -55
y = 55/11
y = 5
x = -4y + 13
x = -4(5) + 13
x = -20 + 13
x = -7
Step-by-step explanation:
From sin(a-b) = sin(a)cos(b) - cos(a)sin(b)
let a=9x, b=x
sin(9x)cos(x) - cos(9x)sin(x) = sin(9x-x) = sin(8x)
