21. Huixian's mother buys some shares of Company A on Day 0. On Day 7, the share price

of Company A is $4.60. If she sells all her shares

of Company A and buys 2000 shares of

Company B on Day 7, she would receive $7400.

On Day 12, the share price of Company A is

less than that on Day 7. If she sells all her shares

of Company A and buys 5000 shares of

$4.80 and the share price of Company B is $0.50

Company B on day 12, she would have to pay $5800.

Find

(1) the number of shares of Company A Huixian's

mother has,

(ii) the share price of Company B on Day 12.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.