4O comprimento de um retângulo é 8 unidades a mais que sua largura. A área do retângulo pode ser expressa como x 4 - 16. Qual expressão representa a largura do retângulo?

x2+ 12 Porque x4- 16 pode ser reescrito como (x2- 4 ) (x2+ 4 ) que é igual a (x2- 4 ) ( (x2+ 12 ) -8).

x2- 4 Porque x4- 16 pode ser reescrito como (x2- 4 ) (x2+ 4 ) que é igual a (x2- 4 ) ( (x2- 4 ) +8).

x2+ 4 Porque x4- 16 pode ser reescrito como (x2+ 4 ) (x2- 4 ) que é igual a (x2+ 4 ) ( (x2+ 4 ) -8).

x2- 12 Porque x4- 16 pode ser reescrito como (x2+ 4 ) (x2- 4 ) que é igual a (x2+ 4 ) ( (x2- 12 ) +8).

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

Jace wrote a sentence as an equation. 56 is 14 more than a number. 14+ = 56 which statement best describes jace's work? jace is not correct. the phrase more than suggests using the symbol > and jace did not use that symbol. jace is not correct. he was correct to use addition, but the equation should be 56+ p = 14 jace is not correct. the first number in the sentence is 56, so the equation should start with 56. jace is correct. the phrase more than suggests addition, so jace showed that 14 plus a variable equals 56. o

Mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.