a suitable detector for repetitive time periods of one minute: 18,500; 18,41 18,250; 18,760; 18,600; 18,220; 18,540; 18,270; 18,670; 18,540. (a) What is the mean value of the number of counts? (b) What is its standard deviation (S.D.)?

Q: Find AB.

A: Let  A=210-3-70-24 and B=4-2011-2005-3-10 The order of a matrix is number of rows× number of…

Q: 3y² - 2y-1 (-)-5y²- 2y +6

A:

Q: Evaluate x²+3x+5

A:

Q: n is the same as 239 added to the product of 238 and z

A:

Q: b2 over b-a + a2 over a-b

A:

Q: VEX2 9

A: Use the substitution and solve the integral easily.

Q: n-6=5

A: Here we have to find the value of n =?  3n-6=5n

Q: B through f

A: (b) A(7)=∫07f(t)dt=Area under the curve from x =0 to x =7=Area of triangle (from x =0 to x=1)-area…

Q: Find 2. 2 i

A:

Q: 5 1 1 + 2r dr

A:

Q: xedx (1+ x)²

A:

Q: 2. (2x)² dm

A:

Q: 1b+1b

A: Applying  addition operation since terms with same variable  binomial addition

Q: 1 [² [²" - dydz dr I

A:

Q: dt t2-t-6

A:

Q: Multiply. (ex − e−x)2

A: Here we multiply this:

Q: 4dx 1. Evaluate x² + 3

A: First I have written the standard formula of integration, just use the formula for the given…

Q: Find A. -6 4 (4A)-1 -2 1 A =

A:

Q: w + (-7), when w = - 1

A: The expression is given by w+(-7) To evaluate: The value of the expression when w=-1.

Q: xy dxdy Hw

A: See attached file for a step by step explanation.

Q: 1 2e10 - 3 da e5z

A:

Q: a = 2 - 9a

A:

Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

A:

Q: V6x + 7 – 2 = x

A:

Q: 4a5b• V18a3b6

A: We have to find

Q: ext dx 8X-X

A: We have to evaluate the ∫dx8x-x2

Q: A О в C

A: Given: To Find: To find the slope of the following line segments:

Q: find 4 j! j30

A: Simply expand the summation and add all values after calculation.

Q: Whta is 1+1=

A: