Find the value za/2 needed to constrict a confident interval with level 87%

Negative 12x - 15 - 8x = 85

An engineer earns $6000 per month. A contractor makes $80 per hour, while a teacher gets basic salary of $3000 and $50 per hour any additional job.

Which ratios are all equivalent to 1:5 2/9,2/10,6:30,5 to 20, 3/20, 8 to 40

Which of thr following represents the most accurate estimation of 4 8?

Two similar solids have a scale factor of 6 : 7. What is the ratio of their volumes, expressed in lowest terms?

A two digit number is such that the product of the digit is 35 when 18 is added to the number the digits change their places. Find the number

The following circle graph represents how the Townsends spend their monthly income What is the central angle measure of the section that represents "Miscellaneous"?

What is the value of the expression 6^-7*6^4

Danielle earns an 8.25% commission on everything she sells at the electronics store where she works. She also earns a base salary of $800 per week.

Kate solved an equation incorrectly, as shown below: Step 1: 9x = 72 Step 2: x = 72 - 9 Step 3: x = 63 Which statement best explains why Step 2 is incorrect in Kate's solution? A. She did not multiply 72 nine times. B. She did not multiply 72 by 9.