babebeba babebeba

04-03-2022
Mathematics

contestada

5. I have 25 coins consisting of 5-cent and 50-cent pieces. If the total value is $7.10, how many 5-cent coins do I
have?

Respuesta :

Zookanda Zookanda

04-03-2022

Answer:

x = # of 5 cent coins

y = # of 50 cent coins

x+y=25

.05x+.5y=7.1

y=25-x

(.05x+.5(25-x)=7.1)100

5x+50(25-x)=710

5x+1250-50x=710

-45x=-540

x=12

You have 12, 5 cent coins and 13, 50 cent coins.

Answer Link

Otras preguntas

75 square feet of tile for $126 What is the unit rate

Can u help me answer the two questions at the bottom in complete sentences plz. Je n'aime pas rester à la maison et toujours faire mes devoirs. Pendant la semai

Yo vivía en La Paz y en Sucre, pero me complace más la ciudad de Sucre. Es un lugar maravilloso para hacer amigos y conocer el verdadero Bolivia. Es más pequeña

One mole of water contains 16 grams of oxygen atoms.

write a letter to the bank explaining 5 things about yourself that would make you a good borrower

traditional Chinese son role

Help don’t know it Also 42

Which point has coordinates (3,4)

The four elements comprising over 90 of living matter are

laura wrote 200 words on the first page of her journajournal. After the second page, she had 400 words. If the pattern continues, how many pages Will it take he