Mrs. Fitzgerald rents a stall in a mall where she sells antiques. She earns a mean revenue of $ 500 $500dollar sign, 500 per month with a standard deviation of $ 125 $125dollar sign, 125. Her stall and new inventory costs her $ 225 $225dollar sign, 225 per month and are her only costs. She calculates her profits using this formula: profit = [revenue] − [costs] profit=[revenue]−[costs]start text, p, r, o, f, i, t, end text, equals, start text, open bracket, r, e, v, e, n, u, e, close bracket, end text, minus, start text, open bracket, c, o, s, t, s, close bracket, end text What will be the mean and standard deviation of the distribution of Mrs. Fitzgerald's profits? Choose 1 Choose 1 (Choice A) A Mean: $ 275 $275dollar sign, 275 Standard deviation: $ 125 $125dollar sign, 125 (Choice B) B Mean: $ 275 $275dollar sign, 275 Standard deviation: $ 350 $350dollar sign, 350 (Choice C) C Mean: $ 500 $500dollar sign, 500 Standard deviation: $ 125 $125dollar sign, 125 (Choice D) D Mean: $ 500 $500dollar sign, 500 Standard deviation: $ 350 $350

1. I have just eaten.

2. Mary was born ten years ago in London.

3. I promise I will return this book next week.

4. Kate made lunch after she washed the floor.

5. When does your train leave ?- At 3. 20

6. When I came in my little sister was sleeping.

7. Nick was doing his homework the whole evening yesterday.

8. Listen! The birds are singing in the garden.

9. Max hates onions.

10. It's the worst song , I've ever heard.

11. This lemonade is too cold for me.

12. Is this juice fresh?

13. Money has no smell.

14. Buy some butter, please.

ответ:Утвердительные:

1. People used to grow vegetables and cereals for food by themselves.

2. People used to be dependent from feudalists.

3. People used to celebrate different holidays like New Year in diffirent way.

4. Countries used to have a lot of wars of conquests.

5. A lot of countries used to have monarch as a head of the country.

Отрицательные:

1. People didn't use to travel by cars and trains.

2. People didn't use to watch TV, use laptops and mobile phones.

3. People didn't use to have any gadgets.

4. People didn't use to have good medicine.

5. People didn't use to be as much educated in some special disciplines like physics as much as we are.

Объяснение: