Which of the following proportions are true

1:4 = 2:5

6:9 = 10:12

5:11 = 15:30

2:7 = 4:14

5x^2=14 in standard form

How can i found the slop

A radius is (blank) the diameter.

15 7/8 - 5 1/2 = What is the fraction?

A student spends the same amount each week for bus fare in 5 weeks he spends 115 which equation shows his relationship let's = number of weeks

Rick can mop the floor in 5 minutes. Together Rick and Nancy can mop the floor in just 4 minutes. How long would it take Nancy to mop the floor alone?

What are the maximum data rates of 802.11 legacy, 802.11a, 802.11b, and 802.11g?

Convert 12 7/12 to a common number

You have $37 to spend at the music store. Each cassette tape costs $10 and each CD costs $13. Write a linear inequality that represents this situation. Let x represent the number of tapes and y the number of CDs.

Which inverse trigonometric function will not determine the measurement of angle a?