foddlyneedhelp foddlyneedhelp

01-06-2018
Mathematics

contestada

Alex and Benny had 440 cards. Alex and Cruz had 320 cards. Benny had 3 times as many cards as Cruz. How many cards did Alex have?

Respuesta :

ashleyspandya ashleyspandya

10-06-2018

260 cards.

Process:
A = Alex
B = Benny
C = Cruz

a+b=440
a+c=320

a=440-b
a=320-c

a=440-b=320-c

b=3c

a=440-(3c)=320-c
-3c+440 = -c+320
-3c=-c-120
-2c=-120
c=60

a=320-c
a=320-60

a=260

Answer Link

Otras preguntas

A pizza has a diameter of 10 inches. If the cheese completely covers the pizza, how many square inches of cheese will be needed?

Select one of the organisms to go 'extinct' or become 'endangered' from the food web shown in the diagram. Tell how the change or loss of the organism will li

translate 5x+7 ≥2 into a verbal sentence

find the geometry mean of 2,5,and7

What does this timeline show about the role of the Supreme Court in defining limits on free speech?

Long answers questions Does god exist?????

HELP!!!! URGENT!!!!! Gene expression in prokaryotes is regulated at which stage? A. Translation B. Transcription C. Post-transcriptional modification

How did the United States respond to the creation of the European Union (EU) and its challenge?

What is the total pressure in mm Hg?

At which electrade in a voltaic cell does redaction always occar?