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Flura [38]
3 years ago
5

Write a recursive definition for the sequence 21,16,11,6

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
4 0
A recursive definition for the sequence shown above can be x = n-5. 
21 - 5 = 16
16 - 5 = 11
11 - 5 = 6
and so on...

The number sequence has a difference of 5 in each of the values before and after them.
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What is 3/4 of 240 4/5?
OLEGan [10]
180.6 is the answer 240 4/5 is 240.8
240.8/4 is 60.2
60.2 x 3 is your answer
6 0
3 years ago
F left parenthesis x right parenthesis equals 9 x cubed plus 2 x squared minus 5 x plus 4 and g left parenthesis x right parenth
Jet001 [13]
The answer is 2x(2x²+x+1).

When we subtract polynomials we combine like terms:
(9x³+2x²-5x+4)-(5x³-7x+4)

9x³-5x³=4x³
2x²- 0 = 2x²
-5x--7x=-5x+7x=2x
4-4=0

This gives us 
4x³+2x²+2x

Each of these is divisible by 2, and each has an x, so we factor those out:
2x(                        )

4x³/2x = 2x²:
2x(2x²                   )

2x²/2x=x:
2x(2x²+x               )

2x/2x = 1:
2x(2x²+x+1)
3 0
3 years ago
Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to 1/8.00 of the original amount.
drek231 [11]
Note that 8.00 = (2.00)^3, that implies that a decay to 1/8.00 means that the Carbon-14 has passed 3 half-life. (1 to decay to 1/2, other to decay to 1/4, and other to decay to 1/8). And, three half-life is 3 * 5730 years = 17,920 years. So,<span> the answer is that the plant was alive 17,920 years.</span>
7 0
3 years ago
What is a correct way to evaluate the expression 80 - (50 – 35)?
Svetach [21]

Answer:

PEMDAS!!! (Parentheses, exponents, multiplication, division, addition, subtraction)

Step-by-step explanation:

Parentheses first!

50-35=15

Then subtraction!

80-15=65

Hope this helped!!! :)

6 0
3 years ago
Read 2 more answers
Please help me!!! I’ll give best comment
ryzh [129]

Answer:

Kevin spends $1,600 on life and health insurance

Step-by-step explanation:

1% = 400

400*4 = 4%

8 0
3 years ago
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