Find the sum of first term of the sequence 1,2,4,8,12

Answers

Answer 1

Answer:

The right solution is "18". A further explanation is given below.

Step-by-step explanation:

The given series is:

1,2,4,8,12

Here,

First term,

a₁ = 1

Second term,

a₂ = 2

Last term,

n = 12

Now,

The sum of the sequence will be:

⇒ [tex]S_n = \frac{n ( a 1 + a 2 ) }{2}[/tex]

On substituting the values, we get

⇒      [tex]=\frac{12(1+2)}{2}[/tex]

⇒      [tex]=\frac{12\times 3}{2}[/tex]

⇒      [tex]=\frac{36}{2}[/tex]

⇒      [tex]=18[/tex]


Related Questions

Find the measures of the angles of a triangle if the smallest angle measures 107º less than the largest angle, and the third angle is one third of the measure of the largest angle

Answers

Answer:

            123°, 41° and 16°

Step-by-step explanation:

x        - the measure of the largest angle

x - 107°        - the measure of the smallest angle

¹/₃x     - the measure of the third angle

x + x - 107° + ¹/₃x = 180°

2¹/₃x = 180° + 107°

⁷/₃x = 287°

x = 287°÷⁷/₃

x = 287° · ³/₇

x = 123°

x-107° = 123° - 107° = 16°

¹/₃x = ¹/₃ · 123° = 41°

what is does equal a+b​

Answers

a+b cannot be simplified any further.

---

hope it helps

Answer:

a+b is at its simplest form

Which statement about the value of a credit report to lenders and borrowers is NOT true?

aCredit reports tell borrowers their likelihood of getting a loan, and their likelihood of getting a good rate.

bCredit reports always tell borrowers and lenders whether a borrower will be able to repay a loan.

cCredit reports tell lenders the risk that a borrower will not repay a loan.

dCredit reports tell borrowers and lenders about the borrower’s past performance on loans.

Answers

Answer:

Credit reports always tell borrowers and lenders whether a borrower will be able to repay a loan.

Step-by-step explanation:

The answer is right

answer for combining A and B

Answers

X + y - 2z = 2
Plz mark brainliest

Someone plz help me giving brainliest

Answers

Answer:

1. Why can't he understand that we don't have no more to give to him.

2. The sitter had to sing  Im a Little Teapot before Suzie would go to bed.

3. Meddlesome is interfering.

4. Heading

5.Takes

In ΔDEF, the measure of ∠F=90°, the measure of ∠D=70°, and EF = 4.4 feet. Find the length of FD to the nearest tenth of a foot.

Answers

Answer:

1.6

Step-by-step explanation:

Answer:

1.6 degrees

Step-by-step explanation:

Lamar used 7/8 of a cup of raisins to make snacks mix. he used 3/4 of a cup of raisins to make cookies what expression could be used to determine the amount of raisins in cups Lamar used together


A: 7/8 + 3/8
B: 7/8 + 6/8
C: 7/12 + 3/12
D: 11/12 + 11/12


I NEED TO KNOW NOWW PLEASEEE!!!!

Answers

The answer is B.

In order to add the two values together, you must find the least common multiple for the denominators. The denominators are 8 and 4, and the least common multiple of 8 and 4 is 8. Because you have to multiply 4 by 2 to get 8, you must also multiply 3 by 2 to get 6. This will give you 6/8.

kevin's garden is rectangular and measures 12 metres by 15 metres. He plans to lay new turf in the garden which will cost £8 per square metre. how much turf will he need to buy and how much will this cost?

Answers

Answer:

Kevin’s garden is rectangular and measures 12 metres by 15 metres. He plans to lay new turf in the garden which will cost £8 per square metre. How much turf will he need to buy and how much will this cost? 4)Inga needs to buy enough skirting board to replace the old skirting board in her bedroom. The bedroom is 5m 20cm long and 4m 80cm wide.

Step-by-step explanation:

Given that p =5, q = 2, r=4
What is the value of 7r

Answers

Answer:

28

Step-by-step explanation:

if r=4 that means that 7r= 7×r is 28

A trapezoid with an area of 36 inches squared.

What is the area of the enlarged trapezoid?
54 in.²
81 in.²
576 in.²
864 in.²

Answers

Answer:

B. 81 in.²

Step-by-step explanation:

We have been given that the trapezoid shown in the attachment has been enlarged by a scale of 1.5. We are asked to find the area of the enlarged trapezoid.

The area of the original trapezoid is 36 square inches.

Since each side of the trapezoid is enlarged 1.5 times, so the area of new trapezoid would be 2.25 times greater than area of original trapezoid.

The area would be 2.25 times greater because area is product of sum of lengths of parallel sides and height.

1.5 × 1.5 = 2.25

Area of new trapezoid: 2.25 × 36 in²

Area of new trapezoid = 81 in²

The area of the enlarged trapezoid would be 81 in² or option B.

The answer is b. 81 in.²

There were 224 roses growing in the back garder. If 50% of the roses were red. How many were not red?

Answers

Answer:

112

Step-by-step explanation:

Divide 224 by two, to get 112. That's how many 50% is in the situation, so 112 roses are not red.

A racecar driver has a 0.05 probability of winning any given race in a season. There are 16 races in a season, and
whether or not the driver wins one race is independent of whether he wins any other race. Let X represent the number
of races the driver wins in the season.
Have the conditions for a binomial setting been met for this scenario?

Answers

Answer:

Yes, all four conditions in BINS have been met.

Step-by-step explanation:

Edge 2021

PLEASE ANSWER THIS QUESTION!!!!!!!!!

Answers

Answer:

the answer is 6.5 because the left side would be 44 and the right side would be 46.5

Step-by-step explanation:

EXPLAIN YOUR ANSWER!!!!!! WILL BE GIVING OUT BRAINLIEST!!!!!!!!!!!!

Answers

Answer:

The answer is B. [tex]3\frac{1}{3} ft.[/tex]

Step-by-step explanation:

It states that the figures in the pair are similar

When you multiply 5*8 it gives you 40 on the first angle

If the figures are similar then the other angle will equal 40.

So we need to find out which number that is multiplied by 12 that will give you 40.

If we multiply [tex]12*3\frac{1}{3}[/tex], it should  give you 40.

Convert The mixed number into a improper fraction:

3 1/3=3*3+1/3

=10/3

Convert the element into a fraction:

12/1*10/3

Factor the number:

3*4/1=10/3

Cross - cancel the common factor: 3

4/1*10/1

Apply the fraction rule:

4*10/1*1

Multiply the numbers: 4*10=40

=40/1*1

Multiply the numbers: 1*1=1

=40/1

Apply the Fraction rule:

=40

Answer: I would love to help but I don’t see the work did you put a picture or something because I don’t see it anything there.

Step-by-step explanation:

What is the length of JL?

Answers

Answer:

your answer will be A)4.5

A mechanical device makes a clicking sound every 3 seconds. If the device was plugged on for 15 hours, calculate the number of times the device made the clicking sound.

Answers

900 times

Why?

15•60=900

(The 60 is because there are 60 mins in an hour).

Hope this helps!!

pleaseee help me answer this question

Answers

Answer: use the radious

Step-by-step explanation:

A sugar cone for ice cream is shaped like a cone. If a sugar cone has a slant height of 4 inches and a diameter of 2 inches, what is the lateral surface area of the cone? Use 3.14 for pi. [Hint: Exclude the base.]
A. 18.8 square inches
B. 15.7 square inches
C. 37.7 square inches
D. 12.6 square inches

Answers

Answer:

12.6 sq. inches.

Step-by-step explanation:

I got this right on a test.

Answer:

12.6

Step-by-step explanation:

I got it right on the test

If the circumference of a circle is 12.56 ft, what is the length of the radius? Use 3.14 for π.

A. 6.28 in.
B. 4.03 in.
C. 4 in.
D. 2 in.

Answers

Answer:

D - 2in

Step-by-step explanation:

PLEASE HELP WITH THIS AND SHOW WORK.

Answers

Answer:

RECT and ANGL are similar triangles with a ratio of 9:16, and for TR, we have TR:24 in the ratio 9:16 so TR = 13.5

Hope this helps!

Someone please!!!!!! give me the correct answer to this question.

I will mark you brainliest for the correct answer.

This is a big test.

Please help!!!!

Answers

the answer is the second choice.

Find the volume of the pentagonal base is 33.5 cm2 and the height of the prism is 15 cm. Do not include units in your answer.

Answers

Answer:

[tex]V=502.5\ cm^3[/tex]

Step-by-step explanation:

The area of the pentagonal base, A = 33.5 cm²

The height of the prsim,h = 15 cm

We need to find the volume of the pentagonal base prism. The formula for the volume of the pentagonal base prism is given by :

[tex]V=A\times h\\\\V=33.5\times 15\\\\V=502.5\ cm^3[/tex]

So, the required volume is [tex]502.5\ cm^3[/tex].

i have a question what is ten times ten divided by 2

Answers

Answer:

50!

Step-by-step explanation:

The answer is 50

= 10 * 10 = 100
= 100 / 2 = 50

A museum groundskeeper is creating a semicircular statuary garden with a diameter of 31 feet. There will be a fence around the garden. The fencing costs $8.25 per linear foot. About how much will the fencing cost altogether?

Answers

Answer: $657.53

Step-by-step explanation:

Circumference of a circle = πd

But in this case, it's a semi circle, so the circumference will be:

= πd/2

= (3.142 × 31) / 2

= 97.402/2

= 48.701

Then, the total amount of the fencing will be:

= 48.701 + 31

= 79.701

Then, the fencing cost will be:

= 79.701 × $8.25

= $657.53

The measures of the angles of a triangle are (3x – 100)°, (x – 10)°, and (x – 10)°.

Solve for x and find the degree measurement of the largest angle in the triangle.

x =

The largest angle in the triangle is
degrees.

Answers

Answer:

x = 60

largest angle = 80°

Step-by-step explanation:

the sum of all three angles in a triangle = 180°

(3x - 100) + (x - 10) + (x - 10) = 180

simplify:

5x = 300

x = 60

angles are 80°, 50°, and 50°

PLEASE HELP ME I NEED THIS
Guys help me, with solution using PEMDAS​

Answers

10 : (3 + 2) * 4 + 5² + 6 - 9 =

= 10 : 5 * 4 + 25 + 6 - 9 =

= 2 * 4 + 31 - 9 = 8 + 31 - 9 =

= 39 - 9 = 30

6 * 4 : 12 + 72 : 8 - 9 =

= 24 : 12 + 9 - 9 = 2


Use the figure to determine the measure of angle 1 if angle 5 is 60 degrees.

Answers

Answer:

the figure is missing. please provide the figure.

HELP NOW I BEEN STRESSING OUT​

Answers

Answer:

(0,-3)

Step-by-step explanation:

the y intercept is when x =0

ok, I need help now! this is due very soon. please no spam, I need an actual answer.


Find the perimeter of the trapezoidal brick to the nearest tenth of an inch.

Answers

In order to do this you would have to use the Pythagorean Theorem which is a^2 +b^2 =c^2. Because we know that the top line is equal to 5 inches then you can assume that the line from the line that equals 3 inches to the left bottom left corner of the trapezoid equals 2 inches because this trapezoid is signifying that both sides are equal. So then you would use the Pythagorean Theorem to find the two unknown sides by doing 2^2 +3^2=c^2 when you combine like terms, it comes out to be 13=c^2 which when you square root it, equals about 3.6. So then you know that each of the unknown sides equal 3.6, so then you add them all up to get 3.6+5+3.6+9=21.2 inches Hope this helps

Please help Magan recorded the grade-level and instrument of everyone in the middle school

School of Rock below.


Based on these results, express the probability that a seventh grader chosen at

random will play the guitar as a fraction in simplest form?

Answers

Answer:

[tex]Probability = \frac{11}{40}[/tex]

Step-by-step explanation:

Given

See attachment

Required

The probability that a 7th grader selected will play guitar.

From the attachment, we have:

[tex]7th\ graders =11+8+8+13[/tex]

[tex]7th\ graders =40[/tex]

7th graders that can play guitars are:

[tex]Guitars = 11[/tex]

So, the probability is:

[tex]Probability = \frac{Guitars}{7th\ graders}[/tex]

[tex]Probability = \frac{11}{40}[/tex]

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