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

One number is three more than two times another. If their sum is increased by four, the result is nineteen. Find the numbers.

How to solve |-5x|+4=-11

Write the fraction as a percent if necessary round to the nearest tenth of a percent 8/12

How do u make 30/20 as a decimal

Jeff takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long? A. 6 B. 8 C. 10 D. 12 E. 14

Describe the one basic move you need to change the equation 2x + 17 = 36 into each equation. a. 2x + 13 = 32 b. 2x - 12 = 7 c. 2x = 19 d. 6x + 51 = 108 e. x + 8.5 = 18 f. 5x + 17 = 3x + 36 h. x + 17 = 36 - x g. 2x - 19 = 0

identify the type of sample. A magazine asks its readers to call in their opinions regarding the quality of their articles A.) systematic B.) simple random C.) convenience D.) self selected

How do i solve this fraction word problem? There are 24 children in a kindergarten class. Three-quarters of them can already write the whole alphabet. How many children can write the alphabet?

How large in square meters is the land area of australia (2941526 mi 2) ?

Sylvia enlarged a photo to make a 24 x 32 inch poster using the dilation DQ, 4. What are the dimensions, in inches, of the original photo?