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PIT_PIT [208]
3 years ago
15

Factor and simplify: (a^2+2a)^2-2(a^2+2a)-3

Mathematics
1 answer:
Alinara [238K]3 years ago
8 0
The answer is a^4+4a^3+2a^2-4a-3
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Julie and Eric row their boat (at a constant speed) 55 miles downstream for 5 hours, helped by the
Archy [21]

Answer: C = 3 mph is the rate of the current.

Step-by-step explanation:

Hey there!

<u />

<u>You can use the distance formula (d = rt) to solve this problem.  </u>

Downstream trip: d = 55 miles, t = 5 hours, and r = R + C  

R + C is their rowing speed (R) plus the rate of the current (C).  

Upstream trip: d = 55 miles, t = 11 hours, and r = R - C

R - C is their rowing speed (R) minus the rate of the current (C).  

Downstream: 55 mi. = (R + C)5 hrs. Divide both sides by 5: R + C = 11

Upstream: 55 mi. = (R - C)11 hrs. Divide both sides by 11: R - C = 5

<u>Calculations</u>

R + C = 11 Subtract C from both sides.

R = 11 - C Substitute this into: R - C = 5

(11 - C) - C = 5 Simplify and solve for C

11 - 2C = 5 Add 2C to both sides.

11 = 2C + 5 Subtract 5 from both sides.

6 = 2C Divide both sides by 2

C = 3 mph is the rate of the current.

~I hope I helped you! :)~

5 0
3 years ago
HELP ME PLEASE ON THIS
Anvisha [2.4K]

The answer is [ all real numbers ]

The domain are the input values which makes the function defined and real.

Since we don't have any constraints or any undefined points, the domain could be literally anything. Thus proves out answer.

Best of Luck!

5 0
3 years ago
Read 2 more answers
A family of 6 is going to the fair. They have a coupon for $2.50 off each ticket. If they pay $96 for all their tickets, and eac
vredina [299]

Answer:

6x=46.50

Step-by-step explanation:

7 0
2 years ago
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409,821,735,673 value of the digit 4 in this number.
gulaghasi [49]
409,821,735,673.....the value of the 4 in this number is 400 billion
4 0
3 years ago
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What is the GCF of 27 andd 63?
Alona [7]

Answer:

9

Step-by-step explanation:

Greatest common factor (GCF) of 27 and 63 is 9.

6 0
2 years ago
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