gustavoguerrag22 gustavoguerrag22

16-12-2018
Mathematics

contestada

tina has 50 coins, all dimes and quarters. the value of the coins is $7.10. write a system of equations to determine how many dimes and how many quarters tina has

Respuesta :

wolf1728 wolf1728

20-12-2018

Answer:

A) D + Q = 50

B) .10D + .25Q = 7.10

We multiply A) by -.10

A) -.10D - .10Q = -5 then adding this to B)

B) .10D + .25Q = 7.10

.15Q = 2.10

Quarters = 14 = 3.50

Dimes = 36 = 3.60

Step-by-step explanation:

Answer Link

Otras preguntas

mr. Perry grated 15 problems in 4 minutes if he has 90 problems to grade how many minutes will it take

Given AB with A(3, 7) and B(13, -8), if E Partitions AB such that the ratio of AE to EB is 3:2, find the coordinates of E. Can anyone please help me.

Can anyone solve this?

Given a right triangle ABC whose angle C = 90 and sin B= 2/3, find cos A

Who invented the spinning jenny which increased the production of thread?.

Which answer shows a reflection across the x-axis?

How does the myosin head obtain the energy required for activation?.

Helpppppppp meeeeeeee plsssss

Barry took a math test. After 5 minutes, he finished 7 problems. After 25 minutes, he finished 47 problems. What is Barry’s rate of change? Simplify your answer

Marques was given a large box of 24 chocolates for his birthday. If he eats exactly 2 chocolates each day, how many chocolates would Marques have remaining 9 da