10^4 = 10,000
9 x 10,000 = 90,000
Answer:
20 dollars
Step-by-step explanation:
Difference in salary between any two hours with a 10 hour gap is 200 dollars
so for on hour it is 20$
Tenemos un problema sobre porcentajes. Veremos que la calificación del alumno es un 80%.
En este caso sabemos que la prueba tiene 70 preguntas, por lo que la cantidad de referencia (el 100%) será 70.
Y sabemos que el estudiante responde correctamente 56 preguntas.
Lo que queremos hacer es ver que porcentaje representa este segundo número.
Para ver esto planteamos dos ecuaciones:
56 = x
70 = 100%
Para resolver esto, debemos ver el cociente entre esas ecuaciones:
56/70 = x/100%
Ahora resolvemos para x:
(56/70)*100% = x = 80%
Es decir, el alumno obtiene una clasificación del 80%.
Si quieres aprender más puedes leer:
brainly.com/question/18546712
Width = 13cm
Length = 16cm
<u>Explanation:</u>
Let width = b,
So, length = b+3
Perimeter of rectangle = 2x(length + width)
According to the question,

Hence,
Width = 13cm
Length = 16cm
Answer:

Step-by-step explanation:
Let x represent temperature on 4th day.
We have been given that the temperatures was recorded for the first three days were -2°,10°,and 7°.
The total temperature on f days would be
.
We have been given that total temperature change was -4°. We can represent this information in an equation as:




Therefore, the temperature on 4th day must be equal to
.