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irakobra [83]
3 years ago
8

Lin come complete 30 math problems in 2 hours. how do i make an expression for that

Mathematics
1 answer:
Blizzard [7]3 years ago
3 0

Answer:

60(2)=30

Step-by-step explanation:

Happy Quarantining!

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Two terms of an arithmetic sequence are a10=16 and a35=66 find the sum of the first 75 terms
andrew11 [14]

The sum of the first 75 terms of the arithmetic sequence that has 10th term as 16 and the 35th term as 66 is 5400.  

<h3>How to find the sum of terms using Arithmetic sequence formula</h3>

aₙ = a + (n - 1)d

where

  • a = first term
  • d = common difference
  • n = number of terms

Therefore, let's find a and d

a₁₀ = a + (10 - 1)d

a₃₅ = a + (35 - 1)d

Hence,

16 = a + 9d

66 = a + 34d

25d = 50

d = 50 / 25

d = 2

16 - 9(2) = a

a = 16 - 18

a  = -2

Therefore, let's find the sum of 75 terms of the arithmetic sequence

Sₙ = n / 2 (2a + (n - 1)d)

S₇₅ = 75 / 2 (2(-2) + (75 - 1)2)

S₇₅ = 37.5 (-4 + 148)

S₇₅ = 37.5(144)

S₇₅ = 5400

learn more on arithmetic sequence here: brainly.com/question/1687271

4 0
2 years ago
Coupon A: off 30% of $63 shoes
Soloha48 [4]
??? huh... i’m so confused pls
3 0
3 years ago
Read 2 more answers
ANSWER THIS PLEASE!
Minchanka [31]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
If f(x) = -3x - 5 and g(x)= 4x - 2, find (f-g) (x).
Eddi Din [679]

Answer:

-7x-3

Step-by-step explanation:

(f-g)(x) just means f(x)-g(x).

So

-3x-5-(4x-2)\\-3x-5-4x+2\\-7x-3

4 0
3 years ago
Can someone help me seriously
charle [14.2K]

45 × 30 ÷ 100 = 13.5

thats all

5 0
3 years ago
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