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Digiron [165]
3 years ago
8

Please help me with precal

Mathematics
1 answer:
Doss [256]3 years ago
6 0

Consider the function f(x)=\sqrt{x}. This function has:

  • the domain x\in [0,\infty);
  • the range y\in [0,\infty).

If the domain of unknown function is [a,\infty), then x\ge a or x-a\ge 0. This means that you have \sqrt{x-a} as a part of needed function.

If the range of unknown function is [b,\infty), then y\ge b. This means that you have to translate function b units up and then the expression of the function is

y=\sqrt{x-a}+b.

Answer: correct choice is B.

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Dennis_Churaev [7]

Answer:

ion know

Step-by-step explanation:

8 0
3 years ago
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In an arithmetic sequence {an}, if a1 = 5 and d = 3, find a72. A) 216 B) 218 C) 221 D) 223
Phoenix [80]

The arithmetic sequence with the given condition is determined recursively by

\begin{cases}a_1=5\\a_n=a_{n-1}+3&\text{for }n>1\end{cases}

So we have

a_2=a_1+3

a_3=a_2+3=a_1+3(2)

a_4=a_3+3=a_1+3(3)

and so on with the general pattern

a_n=a_1+3(n-1)

This means the 72nd term in the sequence is

a_{72}=a_1+3(72-1)=5+3(71)=218

so the answer is B.

6 0
3 years ago
What is the distance between -60 and -10 on
Amiraneli [1.4K]

Answer:

50

Step-by-step explanation:

60-10

3 0
3 years ago
Please help!!!
DochEvi [55]
Answer : 125
explain: none
8 0
3 years ago
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In the diagram, AB = 12, DX = 2.5, and BX = 5. Find CD. Show all work.
Naily [24]
I found your complete question in another source.
 See attached image. 
 For this case what you should see is that you have two similar triangles.
 We then have the following relationship:
 ((AB) / (BX)) = ((CD) / (DX))
 We cleared CD:
 CD = ((AB) / (BX)) * (DX)
 Substituting the values:
 CD = ((12) / (5)) * (2.5)
 CD = 6
 Answer: 
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5 0
3 years ago
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