All categories

3 years ago

1+2+3+4+5+6.......+99 what is the quickest way to find the answer Thank u

Mathematics

2 answers:

Furkat [3]3 years ago

8 0

$1+2+3+4+5+6+\ldots+99=\\(1+99)+(2+98)+\ldots+(49+51)+50=\\49\cdot100+50=\\4950$

serious [3.7K]3 years ago

3 0

Answer:

Step-by-step explanation:

Use the formula Sum = (a + L)*n/2

The tricky part is n. That's the number of terms between 1 and 99 inclusive.

n = 99 -1 + 1 = 99

n = 99

a = 1

L = 99

Sum = (1 + 99)*99 / 2

Sum = (100)*99/2

Sum = 4950

You might be interested in

1. Find the missing values in the equations.

anastassius [24]

Answer:

a. ? = 12

b. ? = -4

c. ? = 4

d. ? = -3

e. ? = -3

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Plz someone help me!!!!!!!!!!!!!ASAP!!!!!!!!!!!!!!!

zhenek [66]

0.329 Is Rational
127.5 Is Rational
Number 101 Is Irrational
And -89 Is Irrational

Hope I Helped!

4 0

2 years ago

Multiply [4 0 -1 2 -3 -1] multiplied by [0 1 -3 1] A. [0 4 -6 3 -3 4] B. [0 -4 -6 1 3 -4] C. [-4 4 -3 -1 6 -4] D. [0 4 -6 1 3 -4

Dominik [7]

Answer:

$\text{D. }\left[\begin{array}{cc}0&4\\-6&1\\3&-4\end{array}\right]$

Step-by-step explanation:

It would be helpful to know the numbers of rows and columns, so we don't have to guess.

Any number of on-line calculators and/or graphing calculators can multiply these matrices for you. Excel and other spreadsheets can do this, too. Forming the 6 sums of 2 products is tedious to do by hand.

For example, the term in the product matrix at row 1 column 2 is the sum of products of the numbers in row 1 of the first matrix and column 2 of the second matrix:

4·1 + 0·1 = 4

_____

The attachment shows the matrix multiplication on a TI-84 calculator.

5 0

2 years ago

Question 1: Select the property shown

valentinak56 [21]

Answer:

E BC itsay 3a 5b = 3.5 so it E

4 0

2 years ago

(-4, 6) and (3, -7)

Oksanka [162]

Im sorry but what are these coordinates for is the an image you forgot to put in or something

5 0

3 years ago