All categories

3 years ago

1+3+5+7+...+1003= what is the answer?

Mathematics

2 answers:

Charra [1.4K]3 years ago

4 0

1+(n-1)d = 1003
(n-1)2 = 1002
n-1 = 501
n=502
Sum = 502(1+1003)/2 = 253,004

sergij07 [2.7K]3 years ago

3 0

a) 1 +2 +3 +4 +......+98
98 +97 +96 +95+......+1
sum 99 +99 +99 +99+......+99
there are 98 of these sums, the total is 98 * 99 = 9702, since this sum is twice the sum of the numbers 1 thru 98, we have
sum 1 +2 +3 +4 +.....98 = 9702/2 = 4851

b) 1 +3 +5 +7+.....+1003
1003 +1001 + 999 +997 +....+1
sum 1004 +1004 +1004 +1004 +..1004
There are 502 of these sums. the total is 502 * 1004 = 504008, since this sum is twice the sum of the numbers 1 +3 +5 +7 +....1003, we have
sum 1 +3 +5 +7+.....+1003 = 504008/2 = 252004

You might be interested in

Solve by factoring... 1) y=6x^2-13x-5 2) y=4x^2-7x+3

Amanda [17]

Answer:

1) $x=-\frac{1}{3}, x=\frac{5}{2}$

2) $x=1, x=\frac{3}{4}$

Step-by-step explanation:

Given

$f(y)= 6x^{2} -13x-5=0$

Equating above equation.

$6x^{2} +2x-15-5=0$

$2x(3x+1)-5(3x+1)=0$

$(3x+1)(2x-5)=0$

Solving for both the equation

$3x+1=0$

$3x=-1$

$x=-\frac{1}{3}$

$2x-5=0$

$2x=5$

$x=\frac{5}{2}$

$x=-\frac{1}{3} ,x=\frac{5}{2}$

Given

$f(y)=4x^{2} -7x+3=0$

$4x^{2} -4x-3x+3=0$

$4x(x-1)-3(x-1)=0$

$(x-1)(4x-3)=0$

Solving for both equation

$x-1=0$

$x=1$

$4x-3=0$

$4x=3$

$x=\frac{3}{4}$

$x=1, x=\frac{3}{4}$

8 0

4 years ago

Can anyone help me with this?

Bad White [126]

Answer

use "papa math"

Step-by-step explanation:

6 0

3 years ago

A person invested $810 in an account growing at a rate allowing the money to double

Andrew [12]

Answer:

i dont know bro

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Emily wants to make a rectangular model with a height of one cube

Thepotemich [5.8K]

Answer:

Three cubes

Step-by-step explanation:

The cubes have to be indistinguishable and all orientations of one cube are also have to be indistinguishable.

All ways of connecting two cubes result in the same shape. So answer is larger than two.

After connecting two cubes, there are ten faces where the third cube can be attached, and two faces which are connected, accounting for all 12 faces of two cubes.

Of the 10 exposed faces, exactly two are on opposite ends, both leading to the same straight line figure. The other 8 faces all lead to an L shape, and all L shapes can be rotated to be identical.

Hence, three cubes can only make a straight shape or an angled shape.

Four cubes can make a straight shape, a L shape, a Γ shape (but flipping it over through 3 dimensions makes L and Γ identical), a T shape, and a square shape. That is either four or five different objects depending on if they can be lifted from the table. Anyway, it is more than two.

4 0

3 years ago

If $1200 purchase is$72 sales tax what is $2500 sales tax

Blizzard [7]

You divide 1200 into 72 = .06, which is 6% So then take .06 times 2500 = $150.00

4 0

3 years ago