1. 70/5=14 —> Summer read 14 pages per day.
2. y=14x
56=14x
x=4
Summer took 4 days to read 56 pages.
848 (811+37)
Using the equation
-780 + 37x44=y
-780+ 1,628= 848
The Statements which are true are;
- Choice B; Subtraction and Addition are INVERSE operations.
- Choice D; Multiplication and Division are INVERSE operations.
Inverse Operations:
Operations said to be inverse if both operations are complementary.
- <em>On this note, when a number x is added to a given number y, we get a number z. Also, when we add x back to the number z; we get number y back.</em>
- <em>Similarly, when we multiply a number, x by y; we get z. When z is then divided by y; we get the number x back.</em>
Ultimately,
- Multiplication and Division are INVERSE operations.
- Addition and Multiplication are INVERSE operations.
Read more on inverse operations;
brainly.com/question/13060162
Resolviendo un sistema de ecuaciones, vemos que se venden 6 libros de secundaria 4 y 6 libros de secundaria 1.
<h3>
¿Como escribir un sistema de ecuaciones?</h3>
Primero definimos dos variables:
- x = numero de libros de secundaria 4 vendidos.
- k = número de libros de secundaria 1 vendidos.
Sabemos que se venden 12 libros en total, entonces:
x + k = 12
Tambien sabemos que se recauda un total de $82, entonces:
x*$8 + k*$6 = $82
Entonces tenemos dos ecuaciones.
a) Usando la primer ecuacion, podemos aislar x para tener:
x = 12 - k
b) Ahora podemos reemplazar eso en la otra ecuación para solucionar el sistema.
(12 - k)*$8 + k*$6 = $82
$96 - $2*x = $82
$2*x = $12
x = $12/$2 = 6
Es decir se venden 6 libros de secundaria 4, y como se venden 12 libros en total, los otros 6 libros vendidos son de secundaria 1.
Si quieres aprender más sobre sistemas de ecuaciones:
brainly.com/question/13729904
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Answer:
145 lb
Step-by-step explanation:
416 x 5(oz) = 2080
(Now to convert oz to lb)
2080 ÷ 16 = 130
The apples are 130 pounds, now to add the barrel's weight
130 + 15 = 145