1. which expression is equivalent to a+(c+7) 1. 7ac 2. a-(c+7) 3. (c+7) -a 4. ( a + c) +7 2 which expression is equivalent to x+11 1. 11x 2. 11+x 3. 11-x 4. -x+11 3. which expression is equivalent to mn+z 1. nm+n 2. z+mz 3. mz+n 4, z+nm 4. which expression is equivalent to ( x y ) z 1. ( x +y )+z 2. 2z(xy) 3. x (yz) 4. x (y+z)

Analyze the data sets below. data set a 25,25,25,26,26,26,27,28,28,29,30,31 ,31,32,33,33,34,35,35,35 data set b 25,25,25,26,26,26,26,27,27,27,27,28 ,28,29,29,30,31,31,32,34 which of the following statement are true? select all that apply. a. data set a is relatively symmetric and data set b is skewed left. b. the means of the data sets are within 3 units from eachother. c. the data sets have the same standard deviation. d. the mean of data set a is 27.95 and the mean of data set b is 30. e. the data set b has a higher standard deviation than data set a. f. the mean and median of data set a are close in value.

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

What 620000 divided by 10 to the third power