Answer:
18x^2+7x+12
Step-by-step explanation:
Some signs were left out so I did my best to guess what you left out. If you want a definite answer comment and I'll answer it. Please use * for multiplication
Let's say:
lengh=x
width=y
"The length of a rectangle is 4 inches greater than the width."
That means: x=y+4 (in inches).
the parameter is (by definition) 2*lenght+2*width.
so we have 2*x+2y=24.
we also know that x=y+4
Substituting:
2*(y+4)+2y=24.
2*y+8+2y=24
4*y+8=24//substitute 8 from both sides
4*y=16//dividing both sides by 4.
y=4
So the width is 4!
The lenght is y+4=8!
the dimensions are 4 by 8.
(check: 2*4+2*8=24, correct!)
Answer:
i need to see the figure
Step-by-step explanation:
Okay, the total is 69 units.
(3y)+(12)+(y+1)+(2y+3)+(11)=69
Combine like terms
6y+27=69
Subtract 27 from both sides.
69-27=42
Divide by 6 on both sides
42/6=7
y=7
Plug it into the length of AB
2(7)+3
14+3
length of AB=17
Answer:
-1/125 is a terminating decimal. -7/60 is a repeating decimal.
Step-by-step explanation:
When you convert -1/125 into a decimal, you get −
0.008.
_
When you convert -7/60 into a decimal, you get −
0.11 6.
