Answer:
A = 100 B = 130 C = 150
Step-by-step explanation:
Translated into a system of equations:
A+B+C = 380
B = A+30
C = B + 20
So we find B from the last one:
B = C-20
Plug it in the second one:
C-20 = A+30
A = C-50
Plug it in the first:
C-50 + C-20 + C = 380
3C - 70 = 380
3C = 450
C=150
A = C - 50 = 150 - 50 = 100
B = C - 20 = 150 - 20 = 130
I see.
The correct way to write these is
A: 3^-2 * 3^ - 2 = 1/9 * 1/9 = 1/81 and this one is fine.
B: 3^-4 = (1/3)^ 4 = 1/3 * 1/3 * 1/3 * 1/3 = 1/81 and this one works.
C: (3^-2)^2 = (1/9)^2 = 1/81 and this one also works.
D: No matter how you interpret this, it is not going to equal 1/81. I think it might be written as -(3)^2 * - (3)^2 = - 9 * - 9 = 81 which is not correct.
Answer: D
Answer:
The first three nonzero terms in the Maclaurin series is
Step-by-step explanation:
GIven that:
The Maclaurin series of cos x can be expressed as :
From equation(1), substituting x with (4x), Then:
The first three terms of cos (4x) is:
Multiplying equation (2) with (3); we have :
Finally , multiplying 5 with ; we have:
The first three nonzero terms in the Maclaurin series is
Percent decrease=decrease/original times 100
decrease=23.5-21.2=2.3
original=23.5
percent decrease=2.3/23.5 times 100=0.0978 times 100=9.8%
B is answer
Answer:
A triangular bike path
Step-by-step explanation:
bcos by Pythagoras theorem if we do the square of 5 and 12 and that is equal to 13 square. hence this real right angle triangle and others are not.