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IgorC [24]
3 years ago
13

Let f(x) = 4x + 3

Mathematics
1 answer:
docker41 [41]3 years ago
7 0

Answer: f(x) = 4x + 3

g(x) = -2x + 5

(f · g)(5) = (4(5) + 3)(-2(5) + 5)

(f · g)(5) = (20 + 3)(-10 + 5)

(f · g)(5) = (23)(-5)

(f · g)(5) = -115

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Can someone explain this please???
xeze [42]

A function is a rule that assigns exactly one output to a given input. The input is taken from a set called the domain, and the corresponding output belongs to a set called the range.

1. In this exercise, we're calling the pool of patients 1-8 the domain, and the pool of nurses A-D the range. The given table describes a function because any patient is assigned to only one nurse.

2. This wouldn't be a function if at least one patient was assigned to more than one nurse. If this were to happen in practice, the patient could be, say, given the same dose of some medicine twice if the nurses aren't careful.

3. Making the nurse pool the domain and the patient pool the range would give a relation that is not a function, since more than one patient is assigned to one nurse.

4 0
3 years ago
Multiply the following complex numbers:<br>(7-3i)(8 + 4i)​
mel-nik [20]

Answer:

A

Step-by-step explanation:

Noting that i² = - 1

Given

(7 - 3i)(8 + 4i) ← expand factors using FOIL

= 56 + 28i - 24i - 12i²

= 56 + 4i - 12(- 1)

= 56 + 4i + 12

= 68 + 4i → A

3 0
3 years ago
Define powers provide an example of power with an exponent of 2
shtirl [24]
Well not sure what you are asking, but If it is what I think it is, it would go like this: 
          2 
(9^2)

Then the answer should be 

9^4 since we multiply the exponents. 

If you mean this...

3^2....It would be same as 3 x 3 which we should know is equal to nine. 

Hope I helped! (Be sure to thank me!)
7 0
3 years ago
Read 2 more answers
Colin thinks that n - 6 means 6 less than a number. Is Colin correct?
drek231 [11]

Answer: no

Step-by-step explanation: because it’s equal

4 0
2 years ago
Use the diagram below to solve for x and y. Please help! Fast if possible.
Mila [183]

Answer:

x = 27

y = 29

Step-by-step explanation:

8 0
3 years ago
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