Answer:
x-5
Step-by-step explanation:
Answer:
Hugo got 8 books.
Step-by-step explanation:
Divide 4.50 by 6 to get the unit price. The unit price is $0.75. So add 4.50+.75=5.25 (7 books) and then 5.25+.75=6.00(8 books).
Hope it helps!
Negative Reciprocal (definition and example) -
Parallel (definition and a real world example) -
The question relates to the calculation of rates. As per the given data, Jack shells 21 peanuts per minute.
The question is about understanding rates. In this case, we are told that Jack shells 315 peanuts in 15 minutes. We could express this rate in terms of peanuts per minute, in order to find out how many peanuts are shelled by Jack per minute. To do this, we need to divide the total number of peanuts shelled (315 peanuts) by the total time taken (15 minutes). So, 315 peanuts ÷ 15 minutes = 21 peanuts per minute. This means Jack shells 21 peanuts every minute.
#SPJ2
4x + 3y + z= -6
x-3y + 2z=0
11x-2y + 3z = - 26
Answer:
y= - 271/71
x=755/71
z =4866/71
Step-by-step explanation:
For resolve a system you multiply an equation of the system or add two of the equation and replace the result in the system
Add the 1st and 2nd, and replace the 2nd
4x + 3y + z= -6 4x + 3y + z= -6 4x + 3y + z= -6
(-4) (x-3y + 2z=0) → -4x +12y -8z =0 → +15y -7z = -6
11x-2y + 3z = - 26 11x-2y + 3z = - 26 11x-2y + 3z = - 26
Add the 2nd and 1st, and replace the 1st
4x + 3y + z= -6 4x + 3y + z= -6 4x + z= -6
(-1/5)( 15y -7z = -6) → -3y -7/5z =6/5 → -3y -7/5z =6/5
11x-2y + 3z = - 26 11x-2y + 3z = - 26 11x-2y + 3z = - 26
Add the1st and 3rd, and replace the 3erd
(-3)( 4x + z= -6) -12x - 3z= 18 -12x - 3z= 18
-3y -7/5z =6/5 → -3y -7/5z =6/5 → -3y -7/5z =6/5
11x-2y + 3z = - 26 11x-2y + 3z = - 26 -x-2y = - 8
Add the1st and 3rd, and replace the 1st
(1/3)(-12x - 3z= 18 ) -4x - z= 6 -4x - z= 6
(5)(-3y -7/5z =6/5) → -15y - 7z = 6 → -15y - 7z = 6
-x-2y = - 8 (-4)(-x-2y = - 8) 4x + 8y= 32
Add the 1st and 2nd, and replace the 2nd
(-7)(8y - z =38) -56y +7z= 266 -56y +7z= 266
-15y - 7z = 6 → -15y - 7z = 6 → -71y=271 → y= - 271/71
(1/4)(4x + 8y= 12) x+2y=3 x+2y=3
-56y +7z= 266 → -8y + z =38 → z =4866/71
x+2y=3 → x=755/71