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 more than one sperm cell were able to enter an egg, what might be the result?

What property of water is most important for living organisms

which force is most responsible for binding together an atoms protons and neutrons

If a cheetah is a big cat than what else is a big cat

Neoli is a nurse who works each day from 8:00 am to 4:00 pm at the blood collection centre. She takes 45 minutes for her lunch break. On average, it takes Neo

Which word is an adjective? Please help. Thank you!

A light bulb manufacturer randomly tests 1500 bulbs and finds that 2 are defective. How many defective bulbs would be expected in a shipment of 24,000 bulbs?

The record high January temperature in Austin, Texas, is 90 degrees F The record low January temperature is -7 degrees F, Find the difference between the high a

many scientist are concerned that the ogallala aquifer in the united states is being depleted at an alarming rate what would most likely be a major effect of hi

Which of the following cultures did not influence Dominican cuisine? (1 point) A Chinese B African C Spanish D Taíno