Answer:
Step-by-step explanation:
Integer factors of 117 include ...
... 117 = 1×117 = 3×39 ≈ 9×13
The last factor pair is two factors that differ by 4. We can take these to be the dimensions of the rectangle.
_____
If you want to write an equation for width (w), it might be ...
... w(w+4) = 117
... w² +4w -117 = 0
The factorization problem for this quadratic is the problem of finding two factors of 117 that differ by 4. That is what we have done, above.
If you want to solve this by completing the square, you can to this:
... w² +4w = 117
... w² +4w +4 = 121 . . . . . add 4 = (4/2)² to complete the square
... (w+2)² = 121
... w + 2 = ±√121 = ±11 . . . . take the square root
... w = -2 ± 11 . . . . . we're only interested in the positive solution
... w = 9, then w+4 = 13 and the dimensions are 9 cm by 13 cm.
Answer:
Brielle
Step-by-step explanation:
10x0.55 of an hour=5.5
9x0.6 of an hour= 5.4
To divide fractions you multiply the reciprocal
480 ÷ 1/3 =
480 × 3/1 = 1,440
253.a
multiply 2 and 4 (2×4=8)
×+3=8
or,× =8_3
or,× =5
you can do others like this
253.h
multiply -1×2= -2
-3x-4= -2
or,-3x= -2+4
or,-3x=2(+sign is greater)
or, x=2/-3
Answer:
80 cubic units
Step-by-step explanation:
Area for rectangular prism is l*w*h
2*8*5=80