What are the types of roots of the equation below?

x^4 - 81=0

Four complex

Two complex and two real

Four real

The simplest pure substances that cannot be broken down into any other substance are called?

RITA runs 2.5 miles each day. Write an equation that shows the relationship between the total number of miles y Rita ran after x days

Lisa says that 43 is a 2-digit odd number that is composite. Is she correct? explain

Which of the following is a perfect square trinomial? A. 4x^2-20xy+25y^2 B. 4x^2-14xy+25y^2 C. 4x^2+20xy-25y^2 D. 4x^2+14xy-25y^2

Marie mixes 20 liters of 12% acid solution with a 36% acid solution to make a 20% acid solution. How many liters of 36% solution did she use? 10 liters 12 liters 13.7 liters 16 liters

In right triangle ABC, B=90 and cos A = 11/17. What are A and C to the nearest degree?

Solve the proportion x+1/3 = x/2 5 1 2 10

the cupcake box is 10.348 inches wide. The cookie box is 4.178 inches wide. Estimate the total width of the box

What fraction is 5 out of 22

20% as a fraction in simplest form explain