Question

90/5+4*2-1=19? how do I do this?!

Answer 1

take it daniel and rsvitale

Answer 2

90/5+4*2-1 is equal to 25 not 19. 90/5=18, (4*2)-1=7, 18+7=25. Can you tell us what the question was asking exactly?

Answer 3

GUYS I NEED AN ANSWER FAST!

Answer 4

90/(5+4) = 10
10*2 -1 =19

Answer 5

Thats the question, I have to figure out that equation...

Answer 6

oh you need to use parenthesis Mia

Answer 7

Yeah Can you help?

Answer 8

it should be written ((90/(5+4))*2)-1. This is equal to 19. I used more parenthesis than necessary to be clear.

Answer 9

Thanks SOOO much

Answer 10

I need help now on solving it

Answer 11

ok first we add 5 and 4 to get 9. so 90/(5+4)=90/9=10. Then we take that piece and multiply it by 2. 2*10=20. Finally we subtract 1. 20-1=19

Answer 12

the parenthesis indicate order of operations

Answer 13

does that make sense or do you have any questions?

Answer 14

Yep, that makes perfect sense... um lemme check hang on

Answer 15

By inserting one pair of parenthesis at different places in 100-3^2+5*4-6/2 find as many different ways of evaluating the expression as you can.

Answer 16

ok i think there are many ways to get a different answer. (100-3)^2+5*4-6/2, 100-3^2+(5*4-6)/2, (100-3^2+5*4-6)/2, are several groupings that give different answers. try to think of some more.

Answer 17

the parenthesis make a big difference; for example 100-3^2=91 but (100-3)^2=9409

Answer 18

Oh yeah....i see..

Answer 19

how many more ways are there?

Answer 20

that depends on how it is written. Is the 3^2 actually written with a carat "^" symbol or just as a superscript

Answer 21

there are a bunch of ways to do it if we are just writing it as it's typed but if it is written a certain way in a text book there are less possibilities I would have to know exactly how it was written

Answer 22

the exponent is up in the right corner of the "3"

Answer 23

so not a carat