1+3+5+7+...+999 =
= 1+2+3+4+...+500
+1+2+3+...+499
= 2·(1+2+3+...+499) + 500
= 2·(499·500)/2 + 500
= 499·500 + 500
= 500·(499 + 1)
= 500·500
= 250.000
Answer:
45 pictures
Step-by-step explanation:
I did this one too but i don't if they changed the answer good luck I would double check
Answer:
5
Step-by-step explanation:
20 divided by 4 is 5
8+6+1 =15
-a
-2b-3b =-5b
-3c
15-a-5b-3c is the answer
Answer:
190.5 centimeters.
Step-by-step explanation:
First you need to convert 6ft 3 inches into just inches. There are 12 inches in a foot. 12 x 6 is 72. 72 inches + 3 = 75 inches. 75 inches x 2.54 = 190.5 centimeters.
