How do you solve 100-99+98-97+96-85++4-3+2-1? and show the pattern for it

50

Step-by-step explanation:

100 − 99 + 98 − 97 + 96 − 95 + ... + 4 − 3 + 2 − 1

(100 − 99) + (98 − 97) + (96 − 95) + ... + (4 − 3) + (2 − 1)

1 + 1 + 1 + ... + 1 + 1

50(1)

50

step-by-step explanation:

i need to answer questions so i dont know but i think its the first one because it goes up but a consent rate

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared