Answer:
Step-by-step explanation:
I am just doing this for points
Answer:
The system has zero solutions.
Step-by-step explanation:
3. The length of the rectangle is 3x and width is x+5
Now,
Area of rectangle=l×b
=3x(x+5)
=3x^2+15x(option d.)
4. 2/3x-4=20
2x/3=20+4
2x/3=24
2x=24×3
2x=72
x=72/2
x=36(option d.)
Answer:
see explanation
Step-by-step explanation:
(1)
given
4x² = 81 ( divide both sides by 4 )
x² =
( take the square root of both sides )
x = ±
= ± 
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(2)
subtract 7 from both sides
(4x - 3)² = 32 ( take the square root of both sides )
4x - 3 = ±
= ± 4
Add 3 to both sides
4x = 3 ± 4
( divide both sides by 4 )
x =
± 
Answer:
Subtract c, then divide by m.