Euler's formula, V - E + F = 2, relates the number of vertices V, the number of edges E, and the number of faces F, of a polyhedron. Solve Euler's formula for E.

Negative three forths plus one eighth

A television that was originally marked $199.95 is now 25% off. Write a linear expression for the new cost of the television. Then calculate the sale price of it. A. c - 0.25c; $49.99 B. c + 0.25c; $249.94 C. c - 0.25c; $149.96 D. c + 0.25c; $149.96

90 is one tenth of what?

A hubcap has a radius of 16 centimeters. What is the area of the hubcap? Round your answer to the nearest hundredth. Use 3.14 for π. 16 cm The area of the hubcap is about cm 2.

Can - 5 be the base of an exponential function?

Find the length of the hypotenuse of the right triangle if the width is 60 and hight is 32

Which answer shows 8.45 * 10^4 written in standard form? A) 0.000845 B) 8,450 C) 84,500 D) 8,450,000

Tickets for a concert cost $10 each if you order them online, but you must pay a service charge of $8 per order. The tickets are $12 each if you buy them at the door on the night of the concert. Write a system of equations to model the situation.

Sadie pays a $35 entry fee for her team to run a road race. She also pays $5 per race t-shirt for each of her team members. The total (entry fee and t-shirts) Sadie paid for the race was $65. Write an equation represent the situation

Suppose a family has a gross annual income of $45609