teamnini101 teamnini101

06-05-2020
Mathematics

contestada

Angel bought 3 pens and 4 pencils for $4.25. Nioka bought 2 pens and 6 pencils for $4.50. How much is a pen? and a pencil?

Respuesta :

ItsDodo ItsDodo

06-05-2020

3x + 4y = 4.25 ➡️ equation 1

2x + 6y = 4.5 ➡️ equation 2

multiply equation 1 by 2
6x + 8y = 8.5 ➡️ equ. 3

multiply equation 2 by 3
6x + 18 y = 13.5 ➡️ equ. 4

by solving equation 3 and 4
y = 0.5
x = 0.75

pens are for $0.5
pencils are for $4.5

Answer Link

Otras preguntas

HELP! A semi circle of radius 6 is centered at the origin as shown. A rectangle has two of its vertices at (5,0) and (-5,0) and the other two vertices on the se

X/4- 2 =x/8+4 What value of x makes the equation in the reference image true ?

how many countrys in our earth .

Question 4 of 20 Which energy transfer occurs when a cube of ice is placed in a glass of water? A. The chemical energy of the ice is transferred to the liquid w

Copiar en la carpeta alguna medida de energía que saquen de una factura de gas, de electricidad, o de algún paquete de comida.

what are you most likely to find on a health website?

could you explain to me about differents from of and from and give example setences

answer of this all questions plz

explica la frase mal alimentados

Management accounting is concerned with the provision of information to help managers make informed decisions. Indicate whether this is true or false