Answer:
a < 3
n < 3
Step-by-step explanation:
We will solve each inequality one by one.
Solve first inequality :
3a - 4 < 5
add 4 both the side
3a < 9
divide 3 both the side
a < 3
Solve second inequality:
subtract 5 both the side
now multiply by -3 both the side and reverse the inequality sign
n < (-3)*(-1)
n < 3
That's the final answer. I hope it will help you.
Answer:
k=99
Step-by-step explanation:
k/9 + 7 = 18
Subtract 7 from each side
k/9 +7-7 = 18-7
k/9 = 11
Multiply each side by 9
k/9 *9 = 11 *9
k = 99
Answer:
The function is both injective and surjective.
Step-by-step explanation:
Given function,
We say a function is injective(one-one) when for every value of x we have a unique value of y.We say a function is surjective(onto) when the output y covers all the values of the co domain.
We know that in the graph of at no two points of x there can be a common y. So hence proved that is injective.
is also surjective because for x from - infinity to + infinity covers all the values in its co domain hence it is also surjecctive function.