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take it daniel and rsvitale
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?
GUYS I NEED AN ANSWER FAST!
90/(5+4) = 10 10*2 -1 =19
Thats the question, I have to figure out that equation...
oh you need to use parenthesis Mia
Yeah Can you help?
it should be written ((90/(5+4))*2)-1. This is equal to 19. I used more parenthesis than necessary to be clear.
Thanks SOOO much
I need help now on solving it
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
the parenthesis indicate order of operations
does that make sense or do you have any questions?
Yep, that makes perfect sense... um lemme check hang on
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.
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.
the parenthesis make a big difference; for example 100-3^2=91 but (100-3)^2=9409
Oh yeah....i see..
how many more ways are there?
that depends on how it is written. Is the 3^2 actually written with a carat "^" symbol or just as a superscript
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
the exponent is up in the right corner of the "3"
so not a carat