carlosenriquez10 carlosenriquez10
  • 01-04-2020
  • Mathematics
contestada

Samantha Cruz has 200 coins (quarters and dimes). She has $44.00. Write a system of equations and determine how many quarters= _____ and dimes=____ she has

Respuesta :

mvludeke mvludeke
  • 15-04-2020

Answer:

Step-by-step explanation:

how many coins:  d + q = 200

value of the money  .10d + .25q = 44

(ten cents for each dime and 25 cents for each quarter)

Now to solve by elimination:

1)multiply the first row by -10 so that the dimes will cancel out.

-.10d + -.10 q = 20   (don't do anything to second row)

.10d +  .25q = 44

2) now add those up.

the dimes cancel out.

.15 q = 64

that does not divide evenly so there is something wrong with this problem.

Answer Link

Otras preguntas

Someone plz help me ASAP!!
please help meplease help me out with these (a) I don't know how to solve this (a) 2 and 3​
COMPLETE THE STATEMENT. round to the nearest hundredth if necessary.
A wire of radius 5 x 10⁻⁴ m is needed to prepare a coil of resistance 40 Ω. The resistivity of the material of the wire is 3.14x10⁻⁷ Ωm. Calculate the length of
In what rate of interest Rs 4000 amount to Rs 6000 in 2year​
Calculate the molarity of the solution if 80.0 g of Kool-Aid is dissolved in 1.0 L of solution.
Write the equation in standard form. y+7=−32(x+1)
In ΔCDE, the measure of ∠E=90°, the measure of ∠C=43°, and CD = 95 feet. Find the length of EC to the nearest tenth of a foot.
Helpppppppppppppppppp
Ella and 3 friends are going ice skating. They hire 4 pairs of ice skates for 3 hours. The formula below is for working out the cost of hiring the stakes incl