D=rt and we are told d=546 and r=1.3m/s so
1.3t=546 divide both sides by 1.3
t=420 seconds so
420s(min/60s)=7 min
So it takes him 7 minutes to walk to Sara's house.
Prime factors are factors of a composite number that are indivisible except by the number 1 or the number itself. The answers to your questions are the following:
1. Yes, it is possible especially for very large numbers.
2&3. No, because as mentioned previously, the default prime factors of numbers are 1 and the number itself. For example, 2 is a prime number. Its factors are 1 and 2.
4. Prime factorization are useful in fields of encryption. They make use of the basic prime numbers for the arithmetic modulus with the general equation: n=pq.
Answer:
2x^2-8x+13
Step-by-step explanation:
f(x)=2x^2+5
f(x-2)=2(x-2)^2+5
f(x-2)=2(x-2)(x-2)+5
f(x-2)=2(x^2-2x-2x+4)+5
f(x-2)=2(x^2-4x+4)+5
f(x-2)=2x^2-8x+8+5
f(x-2)=2x^2-8x+13
