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Rasek [7]
4 years ago
5

What is 1 plus 2 plus 3.... plus 200?

Mathematics
2 answers:
Aneli [31]4 years ago
6 0

Answer:

20100

Step-by-step explanation:

There are 200 numbers in this addition problem. To add this, we can do 1 + 200, 2 + 199, 3 + 198 and so on. All of these pairs have a sum of 201 and since there are 200 / 2 = 100 pairs the answer is 201 * 100 = 20100.

Dmitriy789 [7]4 years ago
4 0

Answer: 206

Step-by-step explanation:

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Evaluate the expression for x = –3. x^2+4x+3
DanielleElmas [232]

Answer:

0

Step-by-step explanation:

Substitute x = - 3 into the expression

x² + 4x + 3

= (- 3)² + 4(- 3) + 3

= 9 - 12 + 3

= 0

7 0
3 years ago
Area of a Triangle
jek_recluse [69]

Answer:

3.51 (round to the nearest hundreds)

Step-by-step explanation:

PART A

slope of the line passing through AC : (6-1)/(1-2) = 5/-1 = -5

equation of the line passing through B and perpendicular to AC:

y-3 = 1/5(x-3)

y-3 = 1/5x -3/5

y = 1/5 x - 3/5 + 3

y = 1/5 x + (-3+15)/5

y = 1/5 x + 12/5

PART B

line that passes through the points A and C

y-1 = -5(x-2)

y = -5x+10 + 1

y = -5x + 11

Interception of the lines

y = 1/5x + 12/5

y = -5x + 11

-5x + 11 = 1/5x + 12/5

-25x +55 = x + 12

26x = 43

x = 43/26

y = -5(43/26) + 11

y= -215/26 + 11

y = (-215+286)/26 = 71/26

D (1.65, 2.73)

PART C

AC = \sqrt{(1-2)^2 + (6-1)^2} = \sqrt{1 + 25} = \sqrt{26} = 5,09902

BD = \sqrt{(3-1.65)^2 + (3-2.73)^2} = 1,376735

PART D

AREA = (5,09902 * 1.376735)/2 = 3,509999

8 0
3 years ago
Can answer this question ASAP
iogann1982 [59]

Answer:

The answer is 108ft^2

Please mark me brainliest

8 0
3 years ago
Plz help it is 10 points
Zinaida [17]

Oh please first if the rectangle was compete, it's area would be 8.

The area of the missing triangle is \frac{2*2}{2}=2.

8-2=6<u> </u>

<u>And there you go! Your answer is 6.</u>

7 0
3 years ago
What is 9-3 Divided by 1/3 + 1?
Eddi Din [679]

Answer:

9/2

Step-by-step explanation:

9-3=6 and (1/3+1)=4/3

The answer is 6/(4/3)=9/2

6 0
3 years ago
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