Answer:
-20
Step-by-step explanation:
y = -3x+1
if the input is 7, it means x=7 so substitute in the equation
y= -3*7+1 = -21+1= -20 which is the output
Answer:
100
Step-by-step explanation:
just take one zero off the end of 1000 to get 100
now if you 100x10 you get 1000
✏ Answer:
Step-by-step explanation:
<u>➠</u><u> Subtract 2 from both sides:-</u>
<u />
<u>➠</u><u> Subtract 7/8y from both sides:-</u>
<u />
<u>➠</u><u> Divide both sides by -1:-</u>
<u />
<u>OAmalOHopeO</u>
<u>✎--------------------------</u>
Answer:
x = 72 / 85
Step-by-step explanation:
x -6/7=-x/84
x + x/84 = 6/7
84/84x + 1/84x = (12*6) / (12*7)
85/84x = ( 72 ) / ( 84 )
85/84x = 72 / 84
Multiply left and right from the = sign by 84/85 and you do that so you get a division ON THE LEFT SIDE that equals as 1... See how it works:
84/85 * { 85/84 } * x = 84/85 * { ( 72 ) / ( 84 ) }
{ (84 * 85) / ( 85 * 84) } * x = ( 84 * 72 ) / ( 85 * 84 )
(7140) / ( 7140) * x =. ( 6048 ) / ( 7140)
x = 6048 / 7140
x = 72 / 85
Answer: B. y=9
Explanation: divide both sides of the equation by three
y3/3 = y
27/3=9
y=9
hope this helps:)
