Select all the statements that correctly describe the solutions to this system of equations?

2x-y = 0

x+y=9

The value of a=? 0.25a+0.5=4.5

The Lupu Bridge in China is 12,795 ft long. The Hart Bridge in the USA is 3,845 ft long. About how much longer is the Lupu Bridge than the Hart Bridge? Round each length to the nearest thousand to find the answer.

Jada has 7 pink roses and some white roses. She gives all of them away: 5 roses to each of her 3 favorite teachers. How many white roses did she give away?

A cube has a surface area of 150 square inches (in) What is the area, in square inches, of one face of the cube? A) 50 in 2 B) 5 in2 C) 37.5 in 2 OD) 25 in2

Kacie has a balance of $10,000 on a loan with an annual interest rate of 8%. To pay off the $10,000 in four years, Kacie will have to make a minimum payment of $244.13 per month. How much will Kacie pay in interest over the four year period?

What is 92% of 85 (show the math used to arrive at solution

Mary is the presenter of a weekly radio show. She plays five new songs for every two old songs. Last week she played 15 new songs. How many songs did she play altogether?

What is 7/100 in decimal

Q: It takes Zach 15 minutes to walk 7 1/2 blocks to the swimming pool. At this rate how many blocks can he walk in one minute?

I varies inversely with x and x=3.25 when y=4.5 what is the value of the x when y=3.75 A) 5.2 B) 3.9 C) 2.7 D) 3.2