c = number of stamps collected by Callie Jenna and Callie collect stamps. Jenna has 20 less than twice the number of stamps that
Callie has. Which expression represents the number of stamps that Jenna has?
1 answer:
Answer:
2x - 20 = c
Step-by-step explanation:
x represents the number of stamps Callie has
twice the number is represented as 2x
20 less than rwice the number is represented as 2x - 20
The equation is 2x - 20 = c
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Answer:
11/14
Step-by-step explanation:
11/4 / 3 1/2
3 1/2= 3*2+1= 6+1=7/2
11/4 * 2/7= 22/28
22/2=11
28/2= 14
11/14
![\left[\begin{array}{ccc}1&3&7\\1&1&1\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%267%5C%5C1%261%261%5Cend%7Barray%7D%5Cright%5D%20)
multiply 2nd row by -1 and add to first row
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divide the 1st row by 2
![\left[\begin{array}{ccc}0&1&3\\1&1&1\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%261%263%5C%5C1%261%261%5Cend%7Barray%7D%5Cright%5D%20)
multiply the first row by -1 and add to 2nd row
![\left[\begin{array}{ccc}0&1&3\\1&0&-2\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%261%263%5C%5C1%260%26-2%5Cend%7Barray%7D%5Cright%5D%20)
now we know
y+3=0
x-2=0
therefor
y=-3
x=2
Answer:
Well
1) -2+(-7)
2) -7-2
Step-by-step explanation:
Both equations work and their equivalent
Answer:
just do it Like Nikey
Step-by-step explanation:
lol
Answer:
the answer should be 166
Step-by-step explanation:
because you do 150 times 0.04 to get 6 then add the 10 dollars to get 166
