substitute x for y-1
2(y-1)-y=6 distribute
2y-2-y=6 subtract y in 2y
y-2=6 add 2 to get y by itself
y=8
Put y back into equation x=y-1
x=8-1
X=7
Answer: 21.44 cm
Step-by-step explanation:
Given
Radius r=15 cm
distance of chord from the center is 10 cm
From the figure, the length of the chord is AC
Applying Pythagoras
The length of the chord is 
Answer: false
Step-by-step explanation:
The exponents would have to have a different sign from each other (positive or negative), not the integer.
Answer:
$8.00 for the unit rate
it would cost $144.00 to buy 18 copies
Step-by-step explanation:
for the first one, multiply 40x20= $8.00
then multiply $8.00 by 18 copies and get $144.00!
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