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2 years ago

Hiii please help! i’ll give brainliest if you give a correct answer tysm

Mathematics

1 answer:

vitfil [10]2 years ago

7 0

Answer:2 1/2 divided by 5/8 = ?

Step-by-step explanation:

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..... please help me I don't understand this

Gennadij [26K]

Answer:

i think the 2nd one is correct .. i have not fluent in english to explain the answer.

8 0

2 years ago

Randy and Sandy have a total of 20 books between them. After Sandy loses three by leaving them on the bus, and some birthday gif

nasty-shy [4]

Answer:

Randy had 13 books an Sandy had 7 books.

Step-by-step explanation:

20 - 3 = 17

30 - 17 = 13

13 x 2 = 26

26 + 4 = 30

13 + 7 = 20

Hope this helps! Please mark as brainliest.

3 0

3 years ago

3. Please help me with this question

bagirrra123 [75]

Answer:

Step-by-step explanation:

Multiply the exponents together

6 0

3 years ago

SOMEONE PLEASE HELP!!

BARSIC [14]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

A geometric sequence is defined by the equation an = (3)3 − n.

Delvig [45]

PART A

The geometric sequence is defined by the equation

$a_{n}=3^{3-n}$

To find the first three terms, we put n=1,2,3

When n=1,

$a_{1}=3^{3-1}$

$a_{1}=3^{2}$

$a_{1}=9$
When n=2,

$a_{2}=3^{3-2}$
$a_{2}=3^{1}$

$a_{2}=3$

When n=3

$a_{3}=3^{3-3}$

$a_{3}=3^{0}$
$a_{1}=1$
The first three terms are,

$9,3,1$

PART B

The common ratio can be found using any two consecutive terms.

The common ratio is given by,
$r= \frac{a_{2}}{a_{1}}$
$r = \frac{3}{9}$

$r = \frac{1}{3}$

PART C

To find
$a_{11}$

We substitute n=11 into the equation of the geometric sequence.

$a_{11} = {3}^{3 - 11}$

This implies that,

$a_{11} = {3}^{ - 8}$

$a_{11} = \frac{1}{ {3}^{8} }$

$a_{11}=\frac{1}{6561}$

4 0

3 years ago