lali73
lali73
23-02-2021
Mathematics
contestada
60d+65n=2800
50d+45n=2150
Respuesta :
armannarimanyan04
armannarimanyan04
23-02-2021
From the second equation we can find that d=43-(9/10)*n
we can put this equation into the first one,
So we have equation 60(43-(9/10)*n)+65n=2800
Solving that we get n=20
60d+65*20=2800
d=25
So the answer is d=25 and n=20
Answer Link
VER TODAS LAS RESPUESTAS ( 44+ )
Otras preguntas
In his speech, Churchill asserts "There is nothing they (the Russians) admire so much as strength, and nothing for which they have less respect for than militar
Conservative ideas revived during the cold war because some americans believed that liveral economic ideas were leading the united states towards ___________.
10. Define the three main forms of farming in Africa a. Subsistence farming. b. Commercial farming. c. Sedentary farming.
A water pipe under Buckingham Palace is 59 m long. A water pipe under the White House is 36 m long. What is the difference in the lengths of the two water pipes
Kevin, Michael and Darren all do their own laundry at home. Kevin does his laundry every 9 days, Michael every 10 days, and Darren every 12 days. If they all di
esquivel knows the story of maiz is a myth, so why does she warn her daughter not to step on a kernel of corn
Elizabeth is in the fifteenth week of her pregnancy. in terms of prenatal development, elizabeth's pregnancy is in the _____ period.
Four containers A, B, C, and D contain tar. The tar in each of the containers A, B, C, and D have temperatures of 100°C, 200°C, 50°C, and 25°C respectively. Whi
Joey has a collection of baseball cards that he has separated into two different value categories. His common cards are worth $0.75 each and his premium cards a
Which statements about Currier and Ives prints are true? Choose all answers that are correct. A. They show European landscapes. B. They were popular with the
