Find the arithmetic series a=2 d=5 n=20 find Sn

Answers

Answer 1

Step-by-step explanation:

Sn=n/2{2a+(n-1)d}

=10(4+95)

=10(99)

=990


Related Questions

Help fast please....

Answers

Answer:

a triangular prism

Step-by-step explanation:

they are all 180)

Answer:

Possibly pyramid and if it needs to be more specific triangular based pyramid.

Though this might not be correct.

Step-by-step explanation:

try, check, and revise or write an equation to solve

What are the two whole numbers whose product is 294 and whose quotient is 6?​

Answers

Answer: 7 and 42.

Step-by-step explanation:

Let the two whole numbers be x and y.

From the question given, we can form an equation as:

x × y = 294 ........ i

x/y = 6 .......... ii

From equation ii

x/y = 6

x = 6y

Put the value of x back into equation i

x × y = 294

6y × y = 294

6y² = 294

y² = 294/6

y² = 49

y = ✓49

y = 7

Since x × y = 294 and y = 7,

x = 294/7

x = 42

The numbers are 7 and 42.

What kind of triangle is shown?
I’m sorry for the blurry picture but please help

Answers

Answer:

Right scalene

Step-by-step explanation:

Solve for the value of v: V+27=117

Answers

v+27=117
Subtract 27 to 117:
v=90
The answer is v=90.

2 times x minus 5 is 7. What is x?

Answers

Answer:

6

Step-by-step explanation:

take 7 add 5 and then u get 12 so u take half of that and u get 6

x is 16% of 31.25 what is the answer

Answers

Answer: 5

Step-by-step explanation:

Answer:

5

Step-by-step explanation: 31.25 X 0.16=5

(f) 0.7 - 6.32 + (-0.8) + 1.28​

Answers

Answer:

=0.7f−5.84

Step-by-step explanation:

Let's simplify step-by-step.

f(0.7)−6.32−0.8+1.28

=0.7f+−6.32+−0.8+1.28

Combine Like Terms:

=0.7f+−6.32+−0.8+1.28

=(0.7f)+(−6.32+−0.8+1.28)

=0.7f+−5.84

Answer:

=0.7f−5.84

Pls Brainliest

Can someone please help me

Answers

Answer:

So you must do tan(27)=x/2000Then once you have x you do: x^2+y^2=c^2 solve for c then add up all the sides and then subtract your total by 2000 to get the difference

each Saturday morning Janie works 5 hours and earns $35.75. How much does Janie earn for each hour she works?

Answers

Answer:

$7.15

Step-by-step explanation:

You would get this by dividing $35.75 by 5.

this is the question down below it also has options to choose​

Answers

Answer:

Sorry, this answer has been removed and the account has been banned for 17 hours, 19 minutes and 52 seconds

Step-by-step explanation:

Answer:

Were is the problem?

Step-by-step explanation:

HELP PLEASE ILL GIVE BRAINLIEST IF I CAN
Victor was designing a new office. Every 2 inches on his scale drawing represented 7 feet on the new office. If the length of the conference room on the scale drawing was 9 inches, how long was the actual conference room?


A. 63 ft

B. 25 ft

C. 31.5 ft

D. 35.5 ft

Answers

I believe the answer is c
I believe the answer is C

Annexation: The Lone Star State:Question 9

What incident sparked the U.S.-Mexican War?

A. Mexico would not acknowledge Texas' Independence which made the US angry.

B. Texas was annexed by the US.

C. Stephen F. Austin decided it was time to join Canada​

Answers

Here's link to the answer:

tinyurl.com/wpazsebu

Answer choices:
F. 1/2
G. 2/5
H. 1/10
J. 3/5
Someone answer this question if you know the answer.

Answers

Answer: F. 1/2

Step-by-step explanation:

If you add all the bows together, you get 10. The question is asking the probability of just 1 bow. This means you have a 1/10 chance. If you simply that, you end up with 1/2.

Plastic Rods
A factory makes rods by cutting plastic pipes that are 5 feet long into 8 rods.
Part A
How long is each rod?
40
feet
You may use the scratchpad to show your work.
Enter your answer as a fraction or a mixed number.
Part B
What is the total length of 13 rods?

Answers

Answer

65 feet long

Step-by-step explanation:

15x5 is 65

Answer:

Step-by-step explanation:

5 feet ÷ 8 = 5/8 of a foot for each rod.

(In inches that would be 5/8 × 12 inches = (5 × 12)/8 inches = 60/8 inches = 15/2 inches = 7 1/2 inches.)

13 rods would be 13 × 5/8 feet = (13 × 5)/8 feet = 65/8 feet = 8 1/8 feet

A university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors. The professor is planning to select two of the students for a demonstration. The first student will be selected at random, and then the second student will be selected at random from the remaining students. What is the probability that the first student selected is a history major and the second student is a nursing major?

Answers

Answer:

6.9%.

Step-by-step explanation:

Given that a university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors, and the professor is planning to select two of the students for a demonstration, where the first student will be selected at random, and then the second student will be selected at random from the remaining students, to determine what is the probability that the first student selected is a history major and the second student is a nursing major the following calculations must be performed:

26 = 100

9 = X

9 x 100/26 = X

900/26 = X

34.61 = X

25 = 100

5 = X

500/25 = X

20 = X

0.2 x 0.3461 = X

0.069 = X

Thus, the probability that the first student selected is a history major and the second student is a nursing major is 6.9%.

Answer:

6.9%

Step-by-step explanation:

Hope this will help

Solve for <4.
4 = [?]
O
319
32°
64

Answers

Step-by-step explanation:

32+31+x=180

63+x=180

x=117

x= 117 4

I know but please I need to pass report cards are coming soon ​

Answers

Answer:

D

Step-by-step explanation:

add all sides together and multiply like a regular square and then divide by 2

Can someone help me with this question?

Answers

Answer:

m = 4

Step-by-step explanation:

[tex] \because ABCD\sim QRST[/tex]

[tex] \therefore \frac{10}{m}= \frac{15}{6}[/tex]

[tex] \therefore m= \frac{10\times 6}{15}[/tex]

[tex] \therefore m= \frac{60}{15}[/tex]

[tex] \therefore m=4[/tex]

A scale factor that is less than 1 is a_____
A)
reduction
B)
enlargement
9)
scale factor
D)
center of dilation

Ummm help

Answers

Answer:

D)

center of dilation.

Step-by-step explanation:

The answer

Answer:

D center of dilation

Step-by-step explanation:

dilation is the only invariant point

A man is climbing up a ladder set against the wall of a house. As he climbs
to the top, the covers the distance of 4 feet horizontally and 10 feet
vertically. What is the ladder's angle of elevation? Determine the answer to
the thousandth degree . *

Answers

The Answer is 68.199

What is the area of the rectangle above?
A.
14 square units
B.
28 square units
C.
44 square units
D.
33 square units

Answers

Answer:

A = 33 units^2

Step-by-step explanation:

The area of a rectangle is given by

A = l*w  where l is the length and w is the width

A = 11 * 3

A = 33 units^2

Answer:

D. 33 square units

Step-by-step explanation:

A=wl=3x11=33

how much is 4^7 + 4^7 ÷ 4^5?

Answers

Answer:

Answer is 16400

I hope this help you

Plzz help meee!

A. Break up the figure into a 2 ft by 3ſ it triangle and a 5 ft by § ft rectangle.

B.Break up the figure into a 2 ft by 5 ft triangle and a 5 ft by 3 ft rectangle.

C.Break up the figure into a 2 ft by § ft triangle and a 5 ft by § ft rectangle.

D.Break up the figure into a 2 ft by 13 ft triangle and a 5 ft by 3 ft rectangle.

Answers

Answer:

Step-by-step explanation:


Area is calculated by multiplying the length of a shape by its width. In this case, we could work out the area of this rectangle even if it wasn't on squared paper, just by working out 5cm x 5cm = 25cm² (the shape is not drawn to scale). Hope this helps

(= 16
-1/4x = 16. Solving equations with rational coefficients

Answers

-1/4x=16

-1x =16x4

x =64/-1

x=-64

a teacher attempts to make a number cube unfair by drilling out the spots on one side and inserting lead weights. to determine if she was successful she rules the number cube 50 times and keeps track of the number of times she rolls a 1. she rolls a 1 15 times. She would like to know if the data provide convincing evidence that the proportion of roles will land on a one is greater than 1/6. are the conditions for inference met?
yes the conditions for infants are met
no, the 10% condition is not met
no, the large counts condition is not met
no the rain is condition is not met​

Answers

Answer:

No, the Large Counts Condition is not met.

Step-by-step explanation:

edge 2021

The condition for inference met is no, the large count's condition is not met.

A teacher attempts to make a number cube unfair by drilling out the spots on one side and inserting lead weights. to determine if she was successful she rules the number cube 50 times and keeps track of the number of times she rolls a 1. she rolls a 1 15 times.

What is the interference?

Interference is the phenomenon that occurs when two waves meet while traveling along with the same medium.

The interference of waves causes the medium.

She would like to know if the data provide convincing evidence that the proportion of roles will land on a one is greater than 1/6.

Therefore option second is correct.

That is no, the large count's condition is not met.

To learn more about the interference visit:

https://brainly.com/question/2166481

#SPJ2

Which equation shows a correct relation for triangle RSQ?

Answers

Answer:

sinQ=cosR

Step-by-step explanation:

First we need to find out the measure of ∠R.

The sum of all the angles in a triangle add up to 180. Therefore:

∠Q+∠R+∠S=180

66+∠R+90=180

∠R=180-156

∠R=24°

Since ∠Q≠∠R, sinQ≠sinR. So the first option is incorrect - let's try the second one.

sinQ=cosR

sin66=cos24

0.9135454576=0.9135454576

So the second equation is the correct relation.

Determine the total surface area of the given triangular prism. Only enter the numeric value of your answer. Do not enter the unit of measure. For example, enter 528, not 528 cm^2. Round all answers to the nearest tenth.

Answers

Well if we know the total surface area of thr given triangular prism it would determine how much I need these points.

Answer:

dft

Step-by-step explanation:

hhfhuiygghhjkllkgfdfy

for calculating weighted mean of 64 patients with pulmonary tuberculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660

Answers

Answer:

for calculating weighted mean of 64 patients with pulmonary tuberculosisfor calculating weighted mean of 64 patients with pulmonary tuberculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660 by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660

Match the base to the corresponding height.
Base (b)
Height (h)
b.
b
h
h
b

Answers

B is the right answer !!!!!!

Answer:

B. is the right answer

Step-by-step explanation:

Because I just know

Realiza las siguientes multiplicaciones
a) (+27) ⋅ (+2) =
b) (+12) ⋅ (−13) =
c) (−10) ⋅ (+10) =
d) (−56) ⋅ (+89) =
e) (−100) ⋅ (−135) =
f) (+553) ⋅ (+24) =

Answers

Answer:

A 54

b -156

c -100

d -4984

e 13500

f 13272

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