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polet [3.4K]
3 years ago
15

Which one is the best method of finding triangle numbers

Mathematics
1 answer:
Juliette [100K]3 years ago
7 0

Answer:

Step-by-step explanation:

Look at the corners

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A function is defined by f(x)=6x +15 . What is f(2.5)?
icang [17]

Answer:

f(2.5)=30

Step-by-step explanation:

f(2.5)=6(2.5)+15     plug in 2.5 for x

f(2.5)=15+15           multiply 2.5 by 6

f(2.5)=30                add

3 0
3 years ago
Halpppp plsssssss i need help
serg [7]
<h2>Question:</h2>

Write an expression that can be used to find the sum of the most common and least common lengths of alien fingers.

<h2>Answer:</h2>

5 + 1 = 6

<h2>Step-by-step explanation:</h2>

(MCL) Most Common Length = 5

(LCL) Least Common Length = 1

MCL + LCL =

  5   +   1   =  6

6 0
2 years ago
Given the explicit expression f (n) = 5n - 2, write a set showing the sequence, and write a recursive expression.
denpristay [2]

Answer:

f(n) = 5 + f(n - 1)

Step-by-step explanation:

Given

f(n) = 5n - 2

Required

Write a recursive expression

f(n) = 5n - 2

When n = 1

f(1) = 5 * 1 - 2 = 5 - 2 = 3

f(1) = 3

When n = 2

f(2) = 5 * 2 - 2 = 10 - 2 = 8

f(2) = 8 can be rewritten as

f(2) = 5 + 3

Substitute 3 for f(1)

f(2) = 5 + f(1)

Express 1 as 2 - 1

f(2) = 5 + f(2-1) ----- (1)

When n = 3

f(3) = 5 * 3 - 2 = 15 - 2 = 13

f(3) = 13 can be rewritten as

f(3) = 5 + 8

Substitute 8 for f(2)

f(3) = 5 + f(2)

Express 2 as 3 - 1

f(3) = 5 + f(3 - 1)  ------ (2)

Write out (1) and (2)

f(2) = 5 + f(2-1)

f(3) = 5 + f(3 - 1)

Replace 2 and 3 with n in both cases; This gives

f(n) = 5 + f(n - 1)

Hence;

The recursive is f(n) = 5 + f(n - 1)

7 0
3 years ago
. Laser tag costs $35 per game. The laser tag fans want to play more than 1 game of laser tag. Write an expression to help you f
8_murik_8 [283]

Let x represent the amount of games played.

When x is used, it need to be multiplied by the price ($35).

x(35) = cost in $

Hope this helped :)

3 0
3 years ago
Hey! i’ll give brainliest please help
Ahat [919]

Answer:

I think it's D but im not sure

hope this helps

have a good day :)

Step-by-step explanation:

6 0
3 years ago
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