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4 years ago

Which ones do not represent a function and which ones do represent a function and why?

Mathematics

1 answer:

elena-14-01-66 [18.8K]4 years ago

3 0

7 is not because a couple x values were repeated

8 is not because the x value -2 was used for two y values

9 is not because a couple x values were used for more than one y value

10 is a function is x alue is only used once

hope this helps :)

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Question 1 of 5

dedylja [7]

Formula for the circumference of a circle:

C = πd or C = 2πr

[C = circumference π(pi) d = diameter r = radius(half the diameter)]

You know:

d = 5 feet

and you're using 3.14 for π, so substitute/plug it into the equation

C = πd

C = (3.14)(5)

C = 15.7 feet Your answer is B

5 0

3 years ago

F(n)=5.(-2)n-1<br>Complete the recursive formula of f(n).

Alex73 [517]

Answer:

a(n) = $(-2)(a_{n-1})$

$a_{1}=5$

Step-by-step explanation:

The given expression is in the form of the explicit formula of a geometric sequence.

f(n) = $a(r)^{n-1}$

Where 'a' = First term of the sequence

r = common ratio

Recursive formula of a geometric sequence is,

a(n) = $(a_{n-1}).(r)^{n-1}$

a(n) = $(-2)(a_{n-1})$

Where, $a_{1}=5$

So the recursive formula will be a(n) = $(-2)(a_{n-1})$

6 0

3 years ago

Solve the following inequality: n + 6 is less than or equal to 3

Rainbow [258]

Answer:

n+6 is less than or equal to 3

Step-by-step explanation:

this answer is n is less than or equal to -3

4 0

3 years ago

George wants to purchase a gift for his father for Father’s Day that cost 67.25 if he has already saved 7/8 of the amount how mu

Arlecino [84]

Answer:

$58.84375, rounded ≈ $58.84

Step-by-step explanation:

You can do 67.25 x 7/8 (use a calc if you are lazy) = 58.84375

I'm guessing you don't need to round so I'm going to add both real and rounded answers

3 0

2 years ago

Show that 7x + 1 is equivalence to 2(2x - 1) + 3(x + 1)

marissa [1.9K]

7x + 1 = 2(2x - 1) + 3(x + 1)

7x + 1 = 4x - 2 + 3x + 3

7x + 1 = 7x + 1

Please mark brainliest if right!

4 0

2 years ago

Read 2 more answers

Which ones do not represent a function and which ones do represent a function and why?​

Which ones do not represent a function and which ones do represent a function and why?