Karla is given the equation 10x + 15 = 20 to solve. she says the solution is 1/2 which reason justifies her solution? a) karla says that to solve the equation you first add 15 and then multiply by 10. b) karla says that to solve the equation you first multiply by 10 and then add 15. c) karla says that to solve the equation you first subtract 15 and then divide by 10. d) karla says that to solve the equation you first divide by 10 and then subtract 15.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10

Can anyone me get through my algebra 2 class? the only class i need to graduate..