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

how does the internment of Japanese make you feel ?

how can we save our planet from pullution?

Make a the subject of the formulae 5c = 3b(6a + 2)

Describe one common critique or criticism of Utilitarianism. To what extent do you agree or disagree with this criticism?

3. What events caused the expansion of national power in the twentieth century?

Stacey filled her 1/2 cup measuring cup seven times to have enough flour for a cake recipe. How much flour does the cake recipe call for?

At an appliance store, the price of a refrigerator is marked up 25% to $406.25. What was the price of the refrigerator before the markup? Enter your answer.

Write an equation that goes through (8,1) and is perpendicular to 2y + 4x =12

Natalie also made a catapult, but she used stronger elastic bands than Aiden did. As a result, she was able to send her ball farther with a shorter arm length.

Adam and kevin are roommates. Adam can clean their apartment in 45 minutes. Kevin can clean it in 60 minutes. Rounded to the nearest minute, how much time will