Answer:
A (-2.5, 5) Might Not Be Right
Step-by-step explanation:
Answer:
4 packages of AA batteries
6 packages of AAA batteries.
Step-by-step explanation:
Let the number of packages of AA batteries bought be x
Let
the number of packages of AAA batteries bought be Y
He Brought 10 packages of AA and AAA
thus,
x+y = 10 equation 1
Given
The AA batteries are sold in packages of 6, it means one packet contains 6 batteries
Thus,
Total number of AA batteries in x packages = 6x
The AAA batteries are sold in packages of 8, it means one packet contains 8 batteries
Thus,
Total number of AAA batteries in y packages = 8y
Given total no. of batteries is 72
thus
6x + 8y = 72 equation 2
x+y = 10
y = 10-x ---using this in equation 2
6x + 8(10 - x) = 72
=> 6x + 80 - 8x = 72
=> -2x = 72-80 = -8
=> x = -8/-2 = 4
y = 10 -x = 10 -4 = 6
y = 6
Thus,
he bought 4 packages of AA batteries
6 packages of AAA batteries.
Y=ax+b
a... slope
b... interception on the line y
you get the equation y=-1/2 *x + 12
Greater than (I'm like 80% sure of my answer)
The slope intercept form is Y=mx + b
8x - y - 6=0
<u>-8x -8x
</u>-y= -6+8x = 0
<u>+6 +6
</u>-y = 8x + 6
<u>
I hope you understand.
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