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

If something is hard to handle it is: sticky bulky compact dense

Which river shown on the map indicates the farthest extent of Alexander's conquests? Nile Danube Tigris or Indus

What kind of attitudes promote thief? Explain how they promote it?

What is 0.78 divided by 3.51??? (Decimals)

One isotope of oxygen has 8 protons and 10 neutrons. Which is the correct reference for this isotope? A. oxygen-18 B. oxygen-10 C.<--------? oxygen-8 D. oxyg

Need help please answer! What are the first six terms of the sequence, n2 (n squared)??

Which European country entered World War I as part of the Central Powers but later switched sides to the Allies in 1915?

Simplify (–x2 +5) – (3 – 4x2)

According to Newton's Second Law of Motion, when an object is acted on by an unbalanced force, how will that object respond? A. It will accelerate. B. It will s

Which of the following was not a goal of the new United Nations? (Points : 2) to prevent war and international conflict to promote cooperation among nations to