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Dafna1 [17]
3 years ago
9

25-29 PLZ HELPPPP MEEEEE

Mathematics
1 answer:
valentina_108 [34]3 years ago
5 0

Answer:

25. Lois spent $11.99

26. Leah spent $101.61

27. Brittany jogged 13.6 miles

28. Each package weighed 0.321 kilograms

29. Each of the eight friends paid $6.03

Could I please have a brainliest?

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Please help very urgent
Alik [6]

Answer:

32, <u>16</u>, <u>8</u>, <u>4</u>, <u>2</u>, 1

Explanation:

The geometric mean can be represented by \sqrt[n]{x_{1} • x_{2} • x_{3} • .. x_{n}}.

Which is the mean of the product of n numbers, used to find the average of a geometric progression.

Don't get confused by geometric mean, it is only asking you about the next numbers in the geometric sequence given the first and sixth term.

The explicit rule for a geometric sequence can be modeled by:

a_{n} = a_{1} • r^{n-1}

Where a_{n} is the nth term, a_{1} is the first term in the sequence, n is the term number, and r is the common ratio.

Since we already know the first term, a_{1} will simply be 32.

Since we know it's geometric, there will be an exponential relationship, which means that we will use the geometric mean to find the common ratio.

There are 6 total terms, r is raised to the n – 1 so 6 – 1 = 5, and that will be the degree of this root.

\sqrt[5]{\frac{a_{6}}{a_{1}}} =

\sqrt[5]{\frac{1}{32}} =

\frac{1}{2}.

Therefore: r = \frac{1}{2}.

Using all the information we have, we can find the explicit rule:

a_{n} = a_{1} • r^{n-1}

  • a_{1} = 32
  • r = \frac{1}{2}

a_{n} = a_{1} • r^{n-1} →

\boxed{a_{n} = 32 • (\frac{1}{2})^{n-1}}

________________________________

We can test that this works by substituting the number location of the term you want to find.

For instance:

a_{1} = 32 • (\frac{1}{2})^{1-1}

a_{1} = 32 • (\frac{1}{2})^{0}

a_{1} = 32 • 1

a_{1} = 32

a_{6} = 32 • (\frac{1}{2})^{6-1}

a_{6} = 32 • (\frac{1}{2})^{5}

a_{6} = 32 • \frac{1}{32}

a_{6} = 1

3 0
2 years ago
Read 2 more answers
A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 16 ​pennies, 18 ​dimes, and 28 quarters. The rest of the
tatyana61 [14]

Answer:

I hope this helps you

Step-by-step explanation:

84-16=68

68-18=50

50-28=22

n=22

equation:84-(16+18+28)

6 0
2 years ago
Read 2 more answers
Find the value of x if -x+4=-9​
vladimir1956 [14]

Answer:

-13

Step-by-step explanation:

x+4=-9

  -4  -4

x= -13

If you did 9+4 you'd get 13. But instead its negative because x is negative.

6 0
3 years ago
(1+5²) –16 (1/2)³<br><br>Please help please and Thank you​
KIM [24]

Answer:

the answer simplified is 24

Step-by-step explanation:

4 0
2 years ago
Find k if y = 64 and x = 16
Simora [160]

Answer:

Can you give a picture of what we are answering

Step-by-step explanation:

6 0
2 years ago
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