3 years ago

Arithmetic series HELP PLEASE

Mathematics

2 answers:

KIM [24]3 years ago

5 0

Answer:

5050

Step-by-step explanation:

∑_{n=1 to 50} (4n-1)

a1=4×1-1=3

a2=4×2-1=7

a3=4×3-1=11

......................

a50=4×50-1=199

n=50

Sn=n/2(a1+an)

S50=50/2(3+199)=50/2×202=50×101=5050

otez555 [7]3 years ago

3 0

Put the value of n from 1 to 50 in 4n-1

You might be interested in

A taxi costs 1.65 for the first mile and 0.85 for each additional mile. Which equation could be solved to find the number x of a

diamong [38]

1.65 + 0.85x= $20
0.85x=$18.35
x=21 10/17
first you write the equation
then you have to subtract 1.65 from the equation but you also have to subtract it from 20
then you divide 0.85 from 0.85x and from the 18.35 left over from subtracting 1.65 from 20
then you should get x=21 10/17 (simplified) but the decimal form is a ongoing fraction so you can just round it up to the nearest hundredth

5 0

3 years ago

What is the answer?

g100num [7]

I'll tell you the answer but should I graph it, solve for x, solve for y, or what should I solve for?

3 0

2 years ago

Pls help me it’s for math

sladkih [1.3K]

Answer:m = (3,1)

b = (0,-1)

Equation:2x + 3

Step-by-step explanation:hope this helps :)

Also, I love ❤️❤️❤️❤️❤️❤️ ur anime girl

6 0

2 years ago

4.22 x 1o^6 + 2.25 x 10^5 + 2.8 x 10^6

denpristay [2]

7245000...hope that helps

8 0

3 years ago

Kelsey walked 1.7 miles to the park. Then she walked another 1.3 miles to a cafe. How far did Kelsey walk in all?

uysha [10]

Answer:

3 miles

Step-by-step explanation:

1.7 carry a one because 3+7 is 10

+ 1.3

--------

3.0

7 0

3 years ago

Read 2 more answers