Answer: L = 29cm
Step-by-step explanation:
Let's go!!
To find any rectangle area, you have to apply this formula: A = L . w , where L is the length and w is the width.
So, we have w = L - 13 (the width is 13 less than the Length) and then, perimeter is 90 cm.
Well, I hope you remember that the perimeter of rectangle is 2L + 2W. In this case, 2L + 2w = 90
Then, you might to solve this system of equation:
2L + 2w = 90
w = L - 13
Simplifying the first equation, you'll have L + w = 45 (you can divide everything of 2).
Our new system:
L + w = 45
w = L - 13
Using the substituition method:
L + L - 13 = 45
2L = 58
L = 29 cm
the width is 29 - 13 = 16 cm
Answer:
7x^3 - 7x^2 + 35x
Step-by-step explanation:
7x(x^2-x+5)
7x^3-7x^2+35x
Answer:
6a-6n+36
Step-by-step explanation:
-10a-9n+16-30+3n+15a+50+a
Combine a...
-10a+15a= 5a+a=6a
Combine n...
6a-9n+16-30+3n+50
-9n+3n= -6n
6a-6n+ 16-30+50
Combine # w no variable
Answer: 6a-6n+36
It’s 180-135 which equals 45 so it is 45 degrees for X
To find the decimal value of a fraction, you simply divide the numerator by the denominator. In this case, we are dividing 4 by 20, which is equal to .2. Therefore, the decimal value that is equal to 4/20 is 0.2.
