Which of the following equations cannot be solved using real numbers?

X-4 = 0

x+4 = 0

x²-4=0

x²+4=0

30 treadmills to 36 elliptical machines the ratio in simplest form

What is j / 6 = 9/10

N a trip to his grandparents, donny drove 60 miles per hour for 45 minutes and 50 miles per hour for 30 minutes. how many miles did donny drive?

A consulting firm submitted a bid for a large research project. The firms management initially felt there was a 50/50 chance of getting the bid.

Veronica surveyed her classmates about which types of pets they own. The graph shows her data. A circle graph titled Pets. 32 percent is dogs, 26 percent is cats, question mark is fish, 13 percent is lizards, 18 percent is no pet.

If 3 of the Roberts 4 dogs are black, what percent are NOT black

How long does $1250 have to be deposited at a simple interest rate of 2 1/2% before the balance is tripled?

4. An app developer projects that he will earn $20.00 for every 8 apps downloaded. Write an equation to represent the proportional relationship between the number of apps and the total earnings.

Where would the brackets go to make these numbers possible i) 3 x 4 + 8 : 2 = 10 ii) 6 2 : 12 - 3 + 4 x 12 = 48 (6 2 is actually an exponent 2 is the power)

in the diagram of parallelogram ABCD shown below the measure of angle A is five times the measure of angle D what is the measure of angle A?