3 years ago

PLEASE HELP QUICK!!!

Mathematics

1 answer:

il63 [147K]3 years ago

7 0

I’m sure the answer is D.

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What is the sum of the first 50 terms of the series 2 + 17 + 32 + 47+ ...?

Alex

Answer:

$\huge\boxed{18,475}$

Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of n terms of an arithmetic sequence:

$S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}$

We have

$a_1=2\\d=17-2=32-12=47-32=15\\n=50$

Substitute:

$S_{50}=\dfrac{[2\cdot2+(50-1)\cdot15]\cdot50}{2}=(4+49\cdot15)\cdot25=(4+735)\cdot25\\\\=739\cdot25=18,475$

3 0

3 years ago

Help me answer this question

borishaifa [10]

To find the answer you would need to add 11 to 75 and then that is 86 so then divide that by 1 and the answer is 86

7 0

3 years ago

20 POINTS TO WHOEVER CAN ANSWER THIS QUESTION! PLZZZ?!

Yakvenalex [24]

Hope this would help you

6 0

3 years ago

Read 2 more answers

What is the distance of the line? Remember the distance formula is (23 - 23) + (42 -

vivado [14]

Answer:

The distance of the line is 10.82

Step-by-step explanation:

Distance Between two Points in the Plane

Given two points A(x1,y1) and B(x2,y2), the distance between them is:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The graph clearly shows the points (-5,4) (4,-2), thus the distance is:

$d=\sqrt{(4-(-5))^2+(-2-4)^2}=\sqrt{9^2+(-6)^2}$

$d=\sqrt{81+36}=\sqrt{117}=10.82$

The distance of the line is 10.82

4 0

3 years ago

Gwar [14]

Answer:

1,3,4

Step-by-step explanation:

ıf we rearrange formula we can obtain

p=nrt/v

t=pv/nr

v=nrt/p

r=pv/nt

4 0

2 years ago