What is proper inverse operation to check answer to 25-13=12

What type of triangle is a 45-45-90 triangle?

Gayle, Irma and when'll each made a cake. Gayle used 3 1/4 cups of flour, Irma used 2 2/3 cups of flour, and wynell used 4 1/2 cups of flour. How much total flour did the three ladies use?

Samantha black, a 5-foot y'all park ranger, needs to know the height of a tree. She notices that when the shadow of the tree is 24 feet long her shadow is 4 feet long.

Hello do you know what 80:1000=

Megan owes $26.00 for text messaging in the month of August. If her text messaging plan costs $9 for the first 650 messages and 10¢ for each additional text message, how many text messages did she send that month?

A survey was given and here are the results "Number responding less than 1 week" Gender - X N Males - 71 411 Females - 64 253 a) Construct a 95% confidence interval for the difference in the proportions of males and females at this university.

Select the graph that would represent the best presentation of the solution set. | 5x - 1 | < 1

One number is one more than four times another. the sum of the numbers is 16. find the two numbers

What is 3x - 4 + 20 = 55

From a circular card sheet of radius 28 cm, two circles of radii 7 cm each and a rectangle of length 3 cm and breadth 2 cm are removed. Find the area of the remaining sheets