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Fofino [41]
2 years ago
13

Help can somone help please.

Mathematics
1 answer:
disa [49]2 years ago
8 0

Answer:

0.7

Step-by-step explanation:

5(9n-6)              

5×9n-5×6

45n-30

45n/45  -30/45

or 45n÷45-30÷45

n= 0.6666

0.7

hope dis helps!!!!!    

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Is f(x)=x^2-2x+3 a quadratic function
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Answer:

yes

Step-by-step explanation:

A quadratic function has the general form

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f(x) = x² - 2x + 3 ← is in this form and is a quadratic function

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3 years ago
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Step-by-step explanation:

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3 years ago
james invested some money at 13% interest. James also invested $199 more than 3 times that amount at 12%. How much is invested a
Komok [63]

9514 1404 393

Answer:

  • $3138 at 13%
  • 9613 at 12%

Step-by-step explanation:

Let x represent the amount invested at 13%. Then (3x+199) is the amount invested at 12%. The total interest earned in 1 year is ...

  (13%)(x) +(12%)(3x+199) = 1561.50

  0.49x +23.88 = 1561.50 . . . . simplify

  0.49x = 1537.62 . . . . . . . . . . subtract 23.88

  x = 3138 . . . . . . . . . . . . . . . . divide by 0.49

  3x+199 = 9613

$3138 was invested at 13%; $9613 was invested at 12%.

8 0
2 years ago
What is a correlation
posledela

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7 0
2 years ago
The average amount that a college student spends on a textbook is $205. What is the probability that a students spends between $
garri49 [273]

Complete question :

The average amount that a college student spends on a textbook is $205 with a

standard deviation of $35. What is the probability that a student spends:

A. between $10 and $310?

Answer:

0.999

Step-by-step explanation:

Mean, m = 205 ; Standard deviation, s = 35

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x = 310

Z = (310 - 205) / 35 = 3

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0.99865 - 0

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5 0
3 years ago
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