What is the fifteenth term of the sequence
5,-10,20,-40,80,...?

1)-163 840

2)-81.920

3)81,920

4)327.680

Answers

Answer 1

Answer:

81920.

Step-by-step explanation:

1) the ration of the given sequence is -2=-10/5=20/(-10)...

2) the 15th term can be calculated according to the formula:

a₁₅=a₁*(ratio)¹⁴, then

a₁₅=5*(-2)¹⁴=-5*1024*16=81920.


Related Questions

solve x and find the missing angles

Answers

Answer:

1. x=44°

2.5x=50°

3x=30°

Step-by-step explanation:

1) 46°+x=90°

x=90-46= 44°

X= 44°

2) 5x+100°+3x=180°

8x+100=180

8x=180-100

8x=80

x=80/8

x=10

substitute the value of x in '3x' and '5x'

3*10=30

5*10= 50

L 2. (a) Which term of the arithmetic progression 8 - 6i, 7 – 4i, 6 — 2i, ... is purely imaginary [3]​

Answers

Answer:

10i

Step-by-step explanation:

8-7=1

7-6=1

The real part of the complex numbers is following an arithmetic progression with first term 8 and common difference 1.

………………………………………

-6+2=-4

-4+2=-2

THe Imaginary part of the complex numbers is following an arithmetic progression with first term -6 and common difference 2.

………………………………………

Then the term she of the sequence can be written:

(8 - n) + i(-6 + 2n)

………………………………………

We get a purely imaginary term when its real part is nul :

⇒ 8 - n = 0

⇒ 8 = n

………………………………………

If we take n = 8

⇒ -6 + 2n = -6 + 2×8 = -6 + 16 = 10

Therefore,

The term of the arithmetic progression 8 - 6i, 7 – 4i, 6 — 2i, ... which is purely imaginary is :

10i

a pack of toilet paper was originally $4.50 , it now cost $6.75. What is the solution to this problem?

Answers

2.25 is correct have a good day

Precalculus Logistic growth
Show steps

Answers

Answer:

Logistic growth is like growth statistics only known when the population size is affected by limited resources. Logistic growth is a mix of math and science, and comes helpful for studying populations.

One example of logistic growth formula is f(P) = rP(1 - P / K)

Where K is your relative growth rate co-efficient(only when K is lowercased. Otherwise, K is carrying capacity.)

And P is your initial population.

Use the linear combination method to solve this system of equations. What is the value of x?

3 x + 7 y = 31. Minus 3 x minus 2 y = negative 1
Negative 6
Negative 3 and two-thirds
3 and two-thirds
6

Answers

Answer:

x = -3 2/3

have a great day

Answer:

x = -3 2/3

Step-by-step explanation:

PLEASE HELP Find the areas of the trapezoids. TRAP 17c

Answers

Answer:

30

Step-by-step explanation:

each of the boxes is 2*2

so 30 :D

ABC is isosceles.
m X = [?]
please help!!

Answers

Answer:

  x = 4

Step-by-step explanation:

The base angles of an isosceles triangle are congruent, as shown in the figure.

Equating their measures, we have ...

  ∠A = ∠C

  8x -7 = 25 . . . . substitute the given expressions

  8x = 32 . . . . . add 7

  x = 4 . . . . . . divide by 8

The figure consists of a quarter circle and a parallelogram. What is the area of the composite figure? Use 3.14 for n 76, Round to the nearest whole number.

A 70 in.2
B 84 in.2
C 154 in.2
D 224 in.2

Answers

A is the answer i think

Perform the indicated operation and simplify your answer.

7/20+(-1/10)

Answers

Step-by-step explanation:

7/20 + (-1/10)

Taking LCM of denominators

7/20 - 2/20

==> 5/20

==> 1/4

1/4 is simplest answer.

Answer:

0.6

Step-by-step explanation:

have a good day

Expand Completely
(x19 +7)4

Answers

Answer:

x⁷⁶ + 2401

Step-by-step explanation:

When an exponent is raised to another exponent, the two exponent values are multiplied. When a number is raised to an exponent, the number is multiplied by itself that many of times.

(x¹⁹ + 7)⁴  ---->

x⁽¹⁹ ˣ ⁴⁾ + 7⁴  --->  

x⁷⁶ + (7 x 7 x 7 x 7)  --->

x⁷⁶ + 2401

A car traveled 240 miles in 3 hours. At this rate, how many miles will the car travel in 1/2 hour?

A. 40 mi

B. 20 mi

C. 120 mi

D. 80 mi

Helpppp!

Answers

The car will travel eighty miles in 1/2 hour

Find the sum of the first 21 terms of the arithmetic series.
46 +53 +60 +67+ ...

Answers

Answer:

  2436

Step-by-step explanation:

The sum of n terms of an arithmetic series is given by the formula ...

  Sn = (n/2)(2a +d(n -1))

where a is the first term, and d is the common difference.

__

This series has ...

  a = 46

  d = 53 -46 = 7

  n = 21

So, the desired sum is ...

  S21 = (21/2)(2(46) +7(20)) = 2436

The sum of the first 21 terms is 2436.

If Wendell creates a scale drawing using the scale 1 inch to 10 feet, what will the dimensions of the deck in the scale drawing be?

Answers

Answer:

100x80 ft

Step-by-step explanation:

What is the surface area of cone below Diameter AB=21 and distance from B to C =36

Answers

Answer:

1533.88261311522

Step-by-step explanation:

Let r be the radius of the (base/circle)

and  L be the slant height of the cone

Formula ………………………………………………………………………………………………………

The surface area of a cone = the (curved/lateral) surface area +  the base

                                             [tex]=\pi r^{2}\ \ \ +\ \ \ \pi Lr[/tex]

=========================================

[tex]r=\frac{21}{2} =10.5[/tex]

L = BC = 36

[tex]\text{surface area} =\pi \left( 10.5\right)^{2} +\pi \times 36\times \left( 10.5\right)[/tex]

                   [tex]=346.360590058275 + 1187.52202305694[/tex]

                   [tex]=1533.88261311522[/tex]

HELP!!!!!!! PLS
QUESTIONS ARE BELOW

Answers

Answer:

hope this will help you

Step-by-step explanation:

[tex] \frac{7m}{4} - 2m - 3 \\ = \frac{7 \times ( - 2)}{4} - 2 \times ( - 2) - 3 \\ = \frac{ - 7}{2} + 4 - 3 \\ = \frac{ - 7}{2} + 1 \\ = \frac{ - 7 + 2}{2} \\ = \frac{ - 5}{2} \\ = - 2.5[/tex]

[tex](3 + {n}^{4} ) \div 3 \\ = (3 + {3}^{4} ) \div 3 \\ = (3 + 81) \div 3 \\ = 84 \div 3 \\ = 28[/tex]

Which set of rational numbers are ordered from least to greatest?
A number line going from negative 3 to positive 3 in increments of 1.
Negative 2 and StartFraction 5 Over 6 EndFraction, negative two-thirds, 1 and StartFraction 1 Over 6 EndFraction, 1 and StartFraction 5 Over 6 EndFraction
1 and StartFraction 5 Over 6 EndFraction, 1 and StartFraction 1 Over 6 EndFraction, negative two-thirds, negative 2 and StartFraction 5 Over 6 EndFraction
Negative two-thirds, 1 and one-sixth, 1 and StartFraction 5 Over 6 EndFraction, negative 2 and StartFraction 5 Over 6 EndFraction
Negative 2 and StartFraction 5 Over 6 EndFraction, 1 and StartFraction 5 Over 6 EndFraction, 1 and one-sixth, negative two-thirds

Answers

The fraction with the greatest value is 5/6

How to determine the greatest fraction?

Fractions are numbers that are represented by the quotients of two integers.

The fractions are given as:

1/6, 5/6, -1/6 and -5/6

Negative numbers are less than positive numbers.

So, the remaining fractions are:

1/6 and 5/6

Both fractions have the same denominator.

So, we consider the numerator

5 is greater than 1

Hence, the fraction with the greatest value is 5/6

Read more about fractions at:

brainly.com/question/11562149

#SPJ1

Answer:

Step-by-step explanation:

it is going to be 1/6, 5/6, -1/6 and -5/6

( marking right answer as brainliest ) sid is an entomologist and records the lengths of ladybugs . over the past month he measured 5,300 cm worth of ladybugs * How many meters was this? *

Answers

Answer:

53 meters

Step-by-step explanation:

5300 / 100 = 53

because yes

On a map, 2 inches represent 35 miles. How many inches would 105 miles be

Answers

Answer:

6 inches

Step-by-step explanation:

105÷35=3

3x2=6

simplify6(x - 3) = -42.

Answers

Answer:

x = -4

Step-by-step explanation:

First Expand :

6(x - 3)

= 6x - 18

Now you need to Simplify:

6x - 18 = -42

And now get the 6x by itself by doing this :

6x - 18 = -42

+18 +18

= > 6x = -24

And 6 x 4 = 24

But 6 x -4 = -24

So :

6x/6 and -24/6

= >> x = -4

What is the volume of the gift box?
L= 10in W=5in H= 2in

Answers

100 inches^2

Brainliest please

if it is 9'oclock now what time will it be in 16hours time​

Answers

Answer:

1 AM

Step-by-step explanation:

9AM(start time) to 9PM = 12 hours + the other 4 Hours, 10PM, 11PM, 12PM, 1AM(end time).

Question 7 of 10
Which facts are true for the graph of the function below? Check all that apply
FX) = 3.4%
A. It is increasing
B.the y intercept is (0,3)
C. The range of f(x) is y>4
D. The domain of f(x) is all real numbers
E. It is decreasing
F. The y intercept is (0,4)

Answers

Answer:

It is increasing

The y-intercept is (0, 3).

The domain of F(x) is all real numbers.

The data set shows the number of saves made by a hockey
goalie in the last nine games. The goalie says she usually makes
28 saves per game. Why is the goalie's statement misleading?
Saves Made
23
28
23
24
24
28
26
28
29

Answers

Answer:

she only has saved 28 3 times according to the data

Step-by-step explanation:

help asap will give brainliest
Line segment GH has endpoint G(10,11) and H(−2, −7).



Part A: The point Z lies on segment GH and is located at (6, 5). What is the ratio of GZ: ZH?



Part B: Find the coordinates of Q such that HQ: GH = 1: 6.

Answers

PART A:

Answer:

(-1,-2)

Step-by-step explanation:

The given coordinates are ,

G ( 4 , 10)

H ( -2 , -6)

Midpoint can be calculated by finding the mean of x coordinates and y coordinates . As ,

→ Midpoint = ( 4-2/2 , 10-6/2)

→ Midpoint = ( -2/2 , -4/2 )

→ Midpoint = ( - 1 , -2)

Hence the midpoint is (-1,-2)

PART B:

To find out the midpoint,here's the formula: ((x1+x2)÷2 , (y1+y2)÷2)

Thus,the midpoint of QS is

((4+(-2))÷2 , (10+3)÷2)

=(1 , 13/2)

hope it helps!



What is the area of the figure below?

Answers

Answer:

please attach the figure

Step-by-step explanation:

no figure provided

Answer:

There is no picture for the area of the figure

Step-by-step explanation:

Please attach the picture next time in order for me to help

Please help me im stuck-

Answers

Answer:A

Step-by-step explanation:

Answer:

answer is A

Step-by-step explanation:

yes A

What is the volume of a rectangular cake pan that measures 13 inches by 9 inches by 2 inches?

Answers

Answer: 234 in sq.

Step-by-step explanation: Volume = length times width times height.

13 x 9 x 2 = 234 in sq.

Hope this helps.

Find the probability of rolling a
sum of 2 with two dice.

Answers

Answer:

1/36.

Step-by-step explanation:

We have a probability of 1/6 that the first die rolls 2, and a probability of 1/6 that the second die rolls 2, thus making a combination (2,2) with the probability 1/36.

Which data set contains an outlier?

{16, 42, 45, 45, 46, 48}

{9, 10, 10, 11.4, 12.1, 12.6}

{45, 46, 47, 47, 49, 49}

{15, 15, 15, 16, 16, 17, 18}

Answers

Answer: the first one

Step-by-step explanation: the number is 42 45 45 46 and 48 are all close together while the number 16 is off to the whole other side

Answer:

i agree with the other guy

Step-by-step explanation:

16 42 45 45 46 48

The price of a computer component is decreasing at a rate of 15% per year. State whether this decrease is linear or exponential. If the
component costs $70 today, what will it cost in three years?

Answers

I believe that the answer is 155
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