Answer:
a. x > 9
Step-by-step explanation:
7 - 2/3x < x - 8
Add 2/3 x to each side
7 - 2/3x+ 2/3 x < x+ 2/3 x - 8
7 < x + 2/3 x -8
Add 8 to each side
7+8 < x + 2/3 x -8+8
15 < x + 2/3 x
Get a common denominator for x of 3
15 < 3/3 x + 2/3 x
15 < 5/3 x
Multiply by 3/5 to isolate x
3/5 * 15 < 5/3x * 3/5
9 < x
A² + b² = c²
~~~~~~~~
a² + 3² = 4²
a² + 9 = 16
a² = 7
a² = 2.6 ft
Answer:
y = -1
Step-by-step explanation:
The two lines around x is the absolute value symbol. Absolute value is how far away a number is from 0 on a number line. -10 is 10 points away from 0, so it is now 10.
y = 10 - 11
y = -1
C=1500+4x where x is cds, C is cost
R=10x where R is revenue
then, P=R-C
P=10x-1500-4x
P=6x-1500
set P=0
1500=6x
x=250
check, C=1500+4*250, R=10*250
C=250, R=250
They need to sell 250 cds before they make profit
