so5434720 so5434720

03-06-2021
Mathematics

contestada

If 15x + 12y = 90 then 5x + 4y = ?
A) 72
B) 80
C) 14
D) 10
E) 9
With steps pleaseee

Respuesta :

maxamoah58 maxamoah58

03-06-2021

Answer:

30

Step-by-step explanation:

15x+12y=90

Divide by 3

5x+4y=30

Answer Link

samuelthankgod samuelthankgod

03-06-2021

Answer:

30

Step-by-step explanation:

this is common sense

15x + 12y = 90

dividing throughout by 3, we would have

5x + 4y = 30

or

by equating

15x + 12y - 90=5x + 4y -30

15x -5x = 4y -12y -30 + 90

10x=60-8y

dividing throughout by 2

5x= 30-4y

5x+4y= 30

Answer Link

Otras preguntas

How does the FITT principle apply to the development of a successful personal fitness program?A. The FITT principle helps individuals determine an effective sch

How did the issue of slavery divide the union

The tensions leading up to the Civil War were present at the beginning of the nineteenth century. (Points : 2) True False

The whole is 8 One part is 8 What is the other part? Tell how you know.

9. What is the setting of "The Little Match Girl"? A. A wintry city street B. A place in the matchseller's imagination C. The matchseller's attic home D. The ma

After Hitler came to power in 1933, he blamed Germany's defeat in World War I on A. Communists and American imperialists. B. Communists and Socialists. C. Jews

What was a main purpose of monasteries built by the Catholic Church?

why is pi the best example of an exponent

The IMF and World Bank have been criticized as undemocratic. Why?

The tensions leading up to the Civil War were present at the beginning of the nineteenth century. (Points : 2) True False