Answer:
Step-by-step explanation:
B=2h(a+b) #the numerator goes to the other side, the denominator then just makes it B
B/2h=a+b
2h=a+b/B
2h-a=b/B
2h-a=b(1) #factorise
Answer:
Consider f: N → N defined by f(0)=0 and f(n)=n-1 for all n>0.
Step-by-step explanation:
First we will prove that f is surjective. Let y∈N be any natural number. Define x as the number x=y+1. Then x∈N, and f(x)=x-1=(y+1)-1=y. We conclude that f is surjective.
However, f is not injective. Take x1=0 and x2=1. Then x1≠x2 but f(x1)=0 and f(x2)=x2-1=1-1=0. We have shown that there are two natural numbers x1,x2 such that x1≠x2 but f(x1)=f(x2), that is, f is not injective.
Note:
If 0∉N in your definition of natural numbers, the same reasoning works with the function f: N → N defined by f(1)=1 and f(n)=n-1 for all n>1. The only difference is that you consider x1=1, x2=2 for the injectivity.
10 whole sandwiches can be made with 2 pounds of cheese if each sandwhich has 3 ounces of cheese on it.
2 pounds = 32 ounces
32/3 = 10.67
40%
40 percent of 25 is 10
10/25x100 and you will get your answer which is 40
Luis = 6/7
Marrisa = 5/9
Federico = 11/10 = 1 1/10
Greatest fraction = 1 1/10
Answer: Frederico raised the most.
