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The mean of 10 observations is 21 If each score is divided by 3 find the new mean?
The new mean would be 7. The mean is the average of the data. (x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10=21 [(x1/3)+(x2/3)+(x3/3)+(x4/3)+(x5/3)+(x6/3)+(x7/3)+(x8/3)+(x9/3)+(x10/3)]/10=? [(1/3)(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)]/10=? [(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10]/3= 21/3=7
What are the dimensions of 24 square feet?
There are infinite varieties of dimensions as 4'x6' , 3'x8', 12'x2', ..., etc
What is 3x-5x plus x2-6x2 simplified?
(3x - 5x) + (x2 - 6x2) = -2x -5x2 = -x(2 + 5x)
What is x squared - x?
x^2+x^2=2x^2
What is the formula for cos without hypotenuse?
Cos(x) = 1 - x2/2! + x4/4! - x6/6! + ... where x is measured in radians
What Expression Is Equivalent To x6 x2?
x8
How do you factor x6 - y6?
(x - y)(x + y)(x2 - xy + y2)(x2 + xy + y2)
If the mean of 5 numbers is 34 and one more number is added and the mean becomes 35 what is the number added?
(x1+x2+...+x5)/5 = 34 (x1+x2+...+x5)= 5 * 34 = 170 [(x1+x2+...+x5) + x6]/6 = 35 170 + x6 = 6*35 = 210 x6 =210-170=40 Answer is 40
X6 plus 3x4-x2-3 equals 0?
x6 + 3x4 - x2 - 3 = 0(x6 + 3x4) - (x2 + 3) = 0x4(x2 + 3) - (x2 + 3) = 0(x2 + 3)(x4 - 1) = 0(x2 + 3)[(x2)2 - 12] = 0(x2 + 3)(x2 + 1)(x2 - 1) = 0(x2 + 3)(x2 + 1)(x + 1)(x - 1) = 0x2 + 3 = 0 or x2 + 1 = 0 or x + 1 = 0 or x - 1 = 0x2 + 3 = 0x2 = -3x = ±√-3 = ±i√3 ≈ ±1.7ix2 + 1 = 0x2 = -1x = ±√-1 = ±i√1 ≈ ±ix + 1 = 0x = -1x - 1 = 0x = 1The solutions are x = ±1, ±i, ±1.7i.
What is the least common denominator when subtracting and x2 x4 x6 and x9?
It is 36.
What is the gcf of x2 and x6?
The greatest common factor of a variable, raised to different powers, is the LOWEST of the powers - in this case, x to the power 2.
What is the summation of cos x?
The infinite series is 1 - x2/2! + x4/4! - x6/6! + ...
Factor x to the sixth -27?
x6 - 27 = (x2 - 3)*(x4 + 3x2 + 9) Danny rocks
How do you write x to the twelfth power as x to the second power?
x12 = (x6)2 = (x2)6 = x2x2x2x2x2x2
The mean of 10 observations is 21 If each score is divided by 3 find the new mean?
The new mean would be 7. The mean is the average of the data. (x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10=21 [(x1/3)+(x2/3)+(x3/3)+(x4/3)+(x5/3)+(x6/3)+(x7/3)+(x8/3)+(x9/3)+(x10/3)]/10=? [(1/3)(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)]/10=? [(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10]/3= 21/3=7
What are the dimensions of 24 square feet?
There are infinite varieties of dimensions as 4'x6' , 3'x8', 12'x2', ..., etc
What is x2 plus 3x2-42?
It is an expression that can be simplified to: 4x2-42
