30% of £10 = £3
30% discount = £10 - £3 = £7
Cake costs £7
Answer:
1.5
Step-by-step explanation:
Vertical angles are congruent so:
7x=8x-12
Subtract 7x from both sides:
0=8x-12
Add 12 to both sides:
8x=12
Divide both sides by 8:
x=1.5 or
x= 3/2
Hello from MrBillDoesMath!
Answer:
x = -2 and x = +\- sqrt(3)
Discussion:
x^3 + 2x^2 -3x -6 = (x + 2) (x^2 - 3)
so the roots are x = -2 and x = +\- sqrt(3)
Regards,
MrB
