alinakayy
alinakayy
03-01-2017
Mathematics
contestada
Can someone please help with this question
Respuesta :
AL2006
AL2006
03-01-2017
How nice of them to GIVE us the system of equations !
This thing has already almost solved itself.
3j + 5p = 7.60
j + 2p = 2.90
Write both equations again, but this time,
multiply each side of the second one by 3 :
3j + 5p = 7.60
3j + 6p = 8.70
Now subtract the top equation from the bottom one:
0 + p = 1.10
and Bada-Bing ... There's the cost of the pancake special ... p = $1.10 .
We can take the second original equation now:
j + 2p = 2.90
Subtract one ' p ' from each side:
j + (2p - 1p) = (2.90 - 1.10)
j + p = $1.80
There's your bill for one juice and one pancake special.
Notice that the juice is only 70 cents.
They didn't ask us for that.
Answer Link
VER TODAS LAS RESPUESTAS ( 32+ )
Otras preguntas
An excise tax on alcohol causes the supply of alcohol to decrease and the price of alcohol to decrease. a. True b. False
What part of copyright allows you to sell a used book, cd, or dvd as you wish?
define an algorithm?
On Monday, Sean bought 3 cookies and 5 cakes and spent $78.75. On Tuesday, Sean bought 8 cookies and 2 cakes and spent $40. Find the price for one cookie and on
A student of 4 feet tall went for swimming in a pool. He saw the depth of water in the pole less than 4 feet .Will he sink , write with reason
no trolls help asap pls!!
What was the very first ever recorded pandemic in the United States?
If three coins are tossed, the probability of getting exactly one head is:
X=number of hours Y=number of tents made X=0,1,2,3,4,5,6,7,8 Y=6,7,8,9,10,11,12,13,14 If the slope is 1, What does it represent?
The numbers 2 and 7 are factors of 42. Which statement is true? A. The number 42 is neither a multiple of 2 or 7. B. The number 42 is a multiple of 7 but no
