9/10 of the pizzas at a pizza shop were hawaiian pizzas. the rest of the pizzas were vegetarian pizzas. there were 72 more hawaiian pizzas than vegetarian pizzas. how many pizzas were there in all?

90 pizzas

Step-by-step explanation:

We know that 9/10 of the pizzas are Hawaiian, and the other 1/10 are vegetarian. There are 72 more Hawaiian pizzas than vegetarian pizzas. It's the 72 that's important here. We know 9/10 are Hawaiian and the other tenth are vegetarian. Subtract 1/10 from 9/10 to get 8/10.

(9 - 1)/10

8/10

As a result, 72 is 8/10 of the total. Now divide 72 by 8/10. That is the same as 72 times 10/8.

72 / 8/10

72/1 * 10/8

9/1 * 10/1

9 * 10

There are 90 total pizzas in the pizza shop.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

step-by-step explanation: