Answer:
D
Step-by-step explanation:
2x^3 - 18x^2 + 40x
2x(x^2 - 9x + 20)
2x(x - 5)(x - 4)
Answer is c) x - 5
Answer:
-1 is the answer
Step-by-step explanation:
the question is 3(y-1)=y-5
so, we open the bracets and multiply
so it becomes 3y-3 = y-5
now, we transpose
3y-y =-5+3
2y = -2
y= -2/2 = -1
Answer:
Perimeter = 72
Step-by-step explanation:
<u>Mathematics Puzzle</u>
The area of a rectangle is the product of the base and the height
A=b.h
We know the base and the height are two consecutive prime numbers, not much of useful information so far.
We also know the area is composed only of the two smallest prime digits. Those digits are 2 and 3. If the number is reversed and it's not changed, then we only have two possible values for the area: 232 and 323.
We only need to find two consecutive prime numbers which product is one of the above. The number 232 has no prime factors: 232 = 8*29.
The number 323 is the product of 17 and 19, two consecutive prime numbers, thus the dimensions of the rectangle are 17 and 19.
The perimeter of that rectangle is 2*17+2*19= 72
