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kirill [66]
3 years ago
15

F(x) is a function. 3 5 2 10 15 0 f(x) O A. True O B. False

Mathematics
2 answers:
elixir [45]3 years ago
3 0

Answer:

False

Step-by-step explanation:

X = 5 goes to two different values of y so it is not a one to one correspondence.  This is a relation not a function.

Dmitry_Shevchenko [17]3 years ago
3 0
The answer is false, 5 goes to 2 different numbers
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Find the 21st term in the arithmetic sequence.<br> 3, 7, 11, 15, 19, ...
NNADVOKAT [17]

The 21st term of the given arithmetic sequence is 83. The nth term of an arithmetic sequence is applied to find the required value where n = 21.

<h3>What is the nth term of an arithmetic series?</h3>

The nth term of an arithmetic sequence is calculated by the formula

aₙ = a + (n - 1) · d

Here the first term is 'a' and the common difference is 'd'.

<h3>Calculation:</h3>

The given sequence is an arithmetic sequence.

3, 7, 11, 15, 19, ....

So, the first term in the sequence is a = 3 and the common difference between the terms of the given sequence is d = 7 - 3 = 4.

Thus, the required 21st term in the sequence is

a₂₁ = 3 + (21 - 1) × 4

⇒ a₂₁ = 3 + 20 × 4

⇒ a₂₁  = 3 + 80

∴ a₂₁  = 83

So, the 21st term in the given arithmetic sequence is 83.

Learn more about the arithmetic sequence here:

brainly.com/question/6561461

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5 0
1 year ago
Which of the following is not a way of generating random numbers? A. random number tables B. using phone numbers selected at ran
tino4ka555 [31]

Answer:

well all of these look like a way so we have to use elimination method

A : random number tables : well it has random numbers so X out

B: PHONE NUMBERS: well phone numbers are random so X out

C: USing the internet : totally X out

D: books of random numbers: X out

so none of the above i guess

7 0
3 years ago
On Megan’s road map, 1 inch represents 10 miles. How many miles would 4 inches represent and how do you know? (explain your thin
timurjin [86]

Answer:

The answer is 40 miles!

Step-by-step explanation:

1 inch= 10 miles

2 inches= 20 miles

3 inches= 30 miles

4 inches= 40 miles

Just count by tens

3 0
3 years ago
In the diagram, the radius of the outer circle is
JulijaS [17]

the value of x is 8 cm.

<u>Step-by-step explanation:</u>

Correct Question : In the diagram, the radius of the outer circle is 2x cm and the radius of the inside circle is 6 cm. The area of the shaded region is 220π cm2. What is the value of x? Enter your answer in the box.

We have ,

the area of a circle =  πr²

the outer circle area = \pi(2x)^2 =4\pi x^2

the inside circle area = \pi (6)^2= 36\pi

According to Question,

the outer circle area - the inside circle area = he shaded region

⇒ \pi (4x^2)-36\pi =220\pi

⇒ x^2-9 =55

⇒ x^2=64

⇒x =\sqrt{64}=8

Therefore , the value of x is 8 cm.

5 0
2 years ago
What is h a=1/2bh what is h
Ivahew [28]
If it is a triangle h is height and b is base.
8 0
3 years ago
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