Solve the system by substitution.

3x + 4y = 0

- 7x + y = 62

Penelope is playing in a 32-player chess tournament. The probability of her playing exactly 1 game is 3/16, exactly 2 games is 1/4, exactly 3 games is 3/8, exactly 4 games is 1/8, and exactly 5 games is 1/16. Determine Penelope's expected value.

You have 2 quaters and 5 dimes in your pocket write the ratio of quaters to the total number of coins

What is a part of Earth's surface that has a certain shape and formed naturally.

A pentagon has 5 congruent sides and each angle measures 108°. Which word completely describes the pentagon? A. equilateral B. equiangular C. regular

When 8 is subtracted from the square of a number, the result is 7 times the number. Find the positive solution.

What are the real and complex solutions of the polynomial equation x^3-64=0

10,20,30,40,50,60,70,80,90 what is the next of 90

Is 203 a term of the AP 13,28,43,58

The weather report states that the probability it will rain on Wednesday is 30 percent and the probability that it will rain on Saturday is 60 percent. What is the probability that it will rain on Wednesday and on Saturday?

Cuántas unidades hay en un millon