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Andre45 [30]
3 years ago
7

A scientist estimates that the mean nitrogen dioxide level in a city is greater than 30 parts per billion. To test this estimate

, you determine the nitrogen dioxide levels for 31 randomly selected days. The results (in parts per billion) are listed below.
Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

Step-by-step explanation:

incomplete. no results listed below

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10-d = -34-5d solve this equation
algol13
<h3><u>Explanation</u></h3>
  • Given the equation.

10 - d =  - 34 - 5d

  • Solve the equation for d-term.

Because we cannot subtract or add up constants and variables, we simply move the same variable term to the same side and constant term to the same constant side.

10 + 34 =  - 5d + d \\ 44 =  - 4d \\  \frac{44}{ - 4}  = d \\  - 11 = d

  • Answer Check

Substitute d = -11 in the equation.

10 - ( - 11) =  - 34 - 5( - 11) \\ 10 + 11 =  - 34 + 55 \\ 21 = 21

The equation is true for d = -11.

<h3><u>Answer</u></h3>

<u>\large \boxed{d =  - 11}</u>

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3 years ago
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A rectangle has a height of 4 and a width of 2x^2- 2.
Mekhanik [1.2K]

Answer:

  2

2 − 4

Step-by-step explanation:

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(PLEASE HELP!!!)<br><br> What is g(5) equal to?<br><br> G(t)= -21+3t<br><br> G(5)= ____
Elina [12.6K]
The answer should be g=3t-21/t
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Solve the following triangle completely.
RUDIKE [14]

Answer:

The answers is below in bold.

Step-by-step explanation:

(a) A = 180 - 25.6 - 124.4 = 30 degrees.

Next use the Sine Rule:

b / sin B = c / sin C

b / sin 25.6 = 39.2/sin 124.4

b = (39.2 * sin 25.6) / sin 124.4

b = 20.53 m.

Also

a / sin A = c / sin C

a / sin 30 = 39.2 / sin 124.4

a =  (39.2 * sin 30 / sin 124.4

a = 23.75 m.

b). This is solved in a similar way to (a).

First find angle C  using the sine rule.

Then you will know angle A  from the 180 degree Rule.

Then you can find the length of  a using the Sine Rule.

4 0
3 years ago
What is 4/5 divided by 2/3 simplest form
olga nikolaevna [1]
The answer is 6/5 as an improper fraction, or 1 1/5 as a mixed number.
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3 years ago
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