1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pepsi [2]
3 years ago
12

What is the explicit formula for this geometric sequence?

Mathematics
1 answer:
Kamila [148]3 years ago
5 0

Answer:

<h2>(-6)×3ⁿ⁻¹</h2>

Step-by-step explanation:

We notice that in this sequence (an) we multiply by 3 each time to get the next term

e.g :  (-6)×3 = -18

then

the commonn ratio q = 3

the first term a1 = -6

the explicit formula :

an = a1×qⁿ⁻¹ = (-6)×3ⁿ⁻¹

You might be interested in
What us the value of (-7+3i)-(2-6i)<br><br>a. -9+9i<br>b.-9-3<br>c.-5-3i<br>d.-5+9i
WITCHER [35]
The answer is A. -9+9i
6 0
3 years ago
An SRS of 450 450 high school seniors gained an average of ¯ x = 20 x¯=20 points in their second attempt at the SAT Mathematics
maria [59]

Answer: (15.47, 24.53)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :_

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where n= sample size.

\sigma = standard deviation.

\overline{x}= sample mean.

z*= Critical value.

Given : n= 450

\overline{x}=20

\sigma=49

Critical value for 95% confidence = z*=1.96     [From z-value table]

Then, the 95% confidence interval will be :-

20\pm (1.96)\dfrac{49}{\sqrt{450}}

\approx 20\pm (1.96)(2.31)

\approx 20\pm 4.53

=(20-4.53,\ 20+4.53)=(15.47,\ 24.53)

Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)

3 0
3 years ago
For the functions g and f simplify the following expressions. f(x) = 2x - 4
ira [324]

Answer:

Step-by-step explanation:

4 0
3 years ago
In the diagram, point D is the center of the medium-sized circle that passes through C and E, and it is also the center of the l
mestny [16]

9514 1404 393

Answer:

  5/8

Step-by-step explanation:

The area of the smaller circles is proportional to the square of the ratio of their diameters. The two smallest circles have diameters equal to 1/4 the diameter of the largest circle. Hence their areas are (1/4)^2 = 1/16 of that of the largest circle.

Similarly, the medium circle has a diameter half that of the largest circle, so its area is (1/2)^2 = 1/4 of the are of the largest circle.

The smaller circles subtract 2×1/16 +1/4 = 3/8 of the area of the largest circle. Then the shading is 1-3/8 = 5/8 of the area of the largest circle.

3 0
3 years ago
Marissa counted 29 coins in her change purse which contained, d, dimes and, q, quarters. The value of the coins is $5.00. How ma
avanturin [10]

Answer:

i think the rubber ducky in the bath died on the celling so she was happy and then there was a puddle of tears on the ground so thats why u should never go to school

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Which transformation will always map a parallelogram onto itself?
    5·1 answer
  • Heather has a bag with 16 red blocks, 11 bile blocks, 9 purple blocks, 15 green blocks, 8 yellow blocks, and 20 orange blocks. I
    15·1 answer
  • What properties are shared by rectangles
    12·2 answers
  • A line that passes through (-7, 3 ) and (-6 ,- -1) ?
    5·1 answer
  • How do I find volume of a sphere with 10 as the diameter?
    8·1 answer
  • Find h, k and a, then write an equation for the following transformed function.
    6·1 answer
  • What are the values of w and x ? For brainily
    6·2 answers
  • The distance across a two lane road
    6·1 answer
  • At the market, 2.4 pounds of peas cost<br> $1.68. How much does one pound of<br> peas cost?
    9·1 answer
  • 1) 6х - 4 = 5х - 11 ; ??<br><br><br> 2) 0,3( х -2) = 0,6 + 0,2(х+4) ; ??
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!