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IgorC [24]
3 years ago
13

Dr. Horton is studying an endangered fox whose population is declining. The population decrease is represented by the function f

(x) = 6500(1 - 0.10)* - 40. She using this equation to study the population decline from year to year, with x representing each year. ACADE a) Calculate how many foxes there were in year 3 and in year 8. You must show a your work and explain each step. uestio​
Mathematics
1 answer:
Nezavi [6.7K]3 years ago
6 0

Answer:

5900 (rounded)

Step-by-step explanation:

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John took all his money from his savings account. He spent $88 on a radio and 1/4 of what was left on presents for his friends.
gayaneshka [121]

Answer:

$968

Step-by-step explanation:

x= the money John originally had in his savings account

The statement says that John spent $88 on a radio and 1/4 of what was left on presents for his friends. This means that the remaining money is 3/4 of the total amount minus the money spent on the radio:

3/4(x-88)

Then, it says that of the money remaining, John put 4/11 into a checking account and the last remaining $420 was left to charity. Since, he spent 4/11 of the remining 3/4(x-88), the remaining is 7/11 of that and that remaining is equal to $420 that was the money left at the end:

7/11(3/4(x-88))= 420

21/44(x-88)=420

21/44x-42=420

21/44x=462

x=968

According to this, the money that John originally had in his savings account was $968.

He spent $88 on a radio: 968-88= 880

1/4 of what was left on presents for his friends: 880/4= 220

880-220=660

Of the money remaining, John put 4/11 into a checking account: 660*(4/11)=240

the last remaining $420 was left to charity: 660-240= 420

6 0
3 years ago
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
Mariulka [41]

Answer:

The answer is 55 6/9, but when simplified, it is 55 1/3

4 0
3 years ago
Pleaseee Solve x? - 8x = 20 by completing the square. Which is the solution set of the equation?
gavmur [86]
The correct answer is A. -22,14
3 0
3 years ago
6. A submarine is traveling 200 feet below sea
sweet [91]

Answer:

the answer is 250

Step-by-step explanation:

5 0
2 years ago
Compute the mean deviation of the following set of data; 9,6, 3, 9, 7, 2, 1, 5, 6, 8.
vodomira [7]

Answer:

5.6

Step-by-step explanation:

( 9 + 6 + 3 + 9 + 7 + 2 + 1 + 5 + 6 + 8 ) / 10

= 56 / 10

= 5.6

3 0
3 years ago
Read 2 more answers
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