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mafiozo [28]
3 years ago
6

Find the domain of the function f(x)= 5x^2 +2x-1

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0
The domain is x such that x belong to real number
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An up-and-coming artist has 85 followers on Twitter and this number doubles every week. In what week will the artist first reach
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Answer:

5.8 , which approximately is 6 weeks.

Step-by-step explanation:

the first method is the short one since u just have to double the 85 then divide to 1000.

1000 ÷ ( 85 × 2)

1000 ÷ 170 = 5.882,,,,,. round off to whole number to get 6.

the second method is the addition method.

we start by 85 then keep doubling 85 for every week........inshort.......we add 170 to each weeks number to get the number of followers for the following week.

85 ⇒ 170 ⇒ 340 ⇒ 510 ⇒ 680 ⇒ 850 ⇒ 1020.

     1st      2nd      3rd     4th      5th         6th     week.

u notice that we add (85×2), 170, to get the following week's number of followers..

in 5 weeks..... the number of followers is yet to get to 1000.

when u divide, u get 5.8.....,and it is not logic to say 5.8823....weeks

since she reaches 1000 followers in the 6th week.......though there is an addition,,,, it is the most appropriate answer.

3 0
3 years ago
a baseball team paid eight times as much to their ace pitcher as they paid to their shortstop. if they paid 81 million for the t
GenaCL600 [577]

x +y = 81 million

 let x be the short stop and y be the pitcher

 so pitcher (y) gets 2 times what the the shortstop (x) gets so y = 2x

 so x + 2x = 81 million

3x = 81

x = 27

 the short stop makes 27 million

 the pitcher makes 54 million

7 0
3 years ago
Suppose you have 20 coins that total $4.00. Some coins are nickels and some are quarters. Which of the following pairs of equati
crimeas [40]
A. n+q=45n+25q=20. That should be the correct answer
5 0
3 years ago
Read 2 more answers
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Answer:

1920 cubic inches

Step-by-step explanation:

Volume = Base Area × Height

= 240 × 8

= <u>1</u><u>9</u><u>2</u><u>0</u><u> </u><u>c</u><u>u</u><u>b</u><u>i</u><u>c</u><u> </u><u>i</u><u>n</u><u>c</u><u>h</u><u>e</u><u>s</u>

5 0
3 years ago
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