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

What landform is created when glaciers erode backwards?

a rectangle has a width of 9 units and a length of 40 units.what is the length of a diagonal

Ramirez Company sells a product for $80 per unit. The variable cost is $60 per unit, and fixed costs are $4,850,000. Determine (A) the break-even point in sales

Write the following equation in slope-intercept form and identify the slope and y-intercept 5x+3y 15 The equation in slope-intercept form is y (Simplify your an

Match the following items.

Which is the process of maintaining a steady state inside the body? scurvy anemia dehydration homeostasis

What is the theme of Shadow of the Dragon by Sherry Garland?

What is a list of non-rodent eating snakes? What is the kindest and most handle able ?

What leader impressed the soldiers of the Continental Army by enduring the same hardships they did?George WashingtonBenjamin FranklinThomas JeffersonJohn Adams

a folio is a page of an illuminated manuscript true or false?