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spayn [35]
3 years ago
5

Please help .......​

Mathematics
1 answer:
WITCHER [35]3 years ago
7 0

f(n) = n² + 20

f(1) = 1² + 20 = 21

f(2) = 2² + 20 = 24

f(3) = 3² + 20 = 29

f(4) = 4² + 20 = 36

f(5) = 5² + 20 = 45

f(6) = 6² + 20 = 56

a) first three terms

Answer: 21, 24, 29

b) how many < 50

f(5)=45, f(6)=56 so

Answer: 5

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The rules of significant figures are: 1. all non zeros are significant. 2. trailing zeros are significant. 3. zeros between non-zeros are signifincant. Hence, applying these to the given. 
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6 0
3 years ago
Kellan’s lemonade recipe uses 4 scoops of lemonade powder for every 2.5 cups of water. Kellan uses 10 scoops of lemonade powder
3241004551 [841]
6.25 because 2.5+2.5= 5 and then half of 2.5 is 1.25 so 6.25

3 0
3 years ago
I need fast help with step by step<br> <img src="https://tex.z-dn.net/?f=%5Cint%5Climits%5E2_1%20%7B%5Cfrac%7B3x-1%7D%7Bx%2B1%7D
Ganezh [65]

Answer:

1.38 to the nearest hundredth.

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so (3x - 1) / (x + 1) =  3  - 4 / x+ 1

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Between  limits of 1 and 2 we have:

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=  1.6056 - 0.2274

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5 0
3 years ago
Can someone please help me with this problem
alina1380 [7]
30 dollars per disk.
8 0
3 years ago
7 mark question. The answers on brainly only got me 3 so please help.
Nady [450]

Answer:

See step by step answer

Step-by-step explanation:

the factors are (x+22)(x-10)=0

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When you multiply 4 * 11 * 21 = 924, so you know it's correct.

8 0
3 years ago
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