1.)9+9+4+4=26 that is what I got
Take the percentage and times it by the the price and you will get 30% OF the amount and all you have to do is subtract the 30% from your original price and you will get your answer which is $17.5
D -3m-4n+14. Once you write out the equation, you have to combine all the like terms, also known as simplifiying
<span>450 is 1 std deviation from 500 and 600 is 2 std deviations. So what you wanna do is for plus and minus 1 std deviation the probability is something like ~67% but you want halve of that. so for the 450 bit its 33%.
Then for 2 std deviations plus minus its ~90ish%, but you want the the plus side, so you divide ~95ish% by 2 and get 48ish%.
so then you add 33% and 48% to get B
Also my standard deviations % are off the top of head so you will wanna check them :)
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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Answer:
the third one
Step-by-step explanation: