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kakasveta [241]
2 years ago
10

Asap, round to nearest tenth

Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
6 0

Answer:

A

Step-by-step explanation:

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Which addition property is demonstrated by this problem?<br><br> 23 + (4 + 3) = (23 + 4) + 3
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Answer;
Commutative Property

It is considered commutative when changing the order of the operands does not change the result.

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3 years ago
Which of the questions below are statistical questions? Select all that apply.
Leno4ka [110]

Answer:

My guess is A. Forgive if I'm wrong.

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The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This dist
alexira [117]
<h3>Answer:   83.85%</h3>

This value is approximate.

==========================================================

Explanation:

Let's compute the z score for x = 40

z = (x-mu)/sigma

z = (40-47)/7

z = -1

We're exactly one standard deviation below the mean.

Repeat these steps for x = 68

z = (x-mu)/sigma

z = (68-47)/7

z = 3

This score is exactly three standard deviations above the mean.

Now refer to the Empirical Rule chart below. We'll add up the percentages that are between z = -1 and z = 3. This consists of the two pink regions (each 34%), the right blue region (13.5%) and the right green region (2.35%). These percentages are approximate.

34+34+13.5+2.35 = 83.85

<u>Roughly 83.85%</u> of the one-mile roadways have between 40 and 68 potholes.

5 0
2 years ago
8x=4x^2-1 <br>solve by completing the square
Klio2033 [76]
Get the x terms by themselves on one side and a constant on the other side of the equal sign...

4x^2-8x=1  make the leading coefficient equal to one...

x^2-2x=1/4  now halve the linear coefficient, -2 in this case, square it, and add that value to both sides of the equation...-2/2=-1, -1^2=1 so

x^2-2x+1=1+1/4

x^2-2x+1=5/4  now the left side is a perfect square...

(x-1)^2=5/4  take the square root of both sides...

x-1=±√(5/4)  add 1 to both sides

x=1±√(5/4)
7 0
3 years ago
Read 2 more answers
NO LINKS<br> Solve for a:<br> a/0.2-10=20<br><br> -6<br> -4<br> 4<br> 6
lapo4ka [179]

Answer:

6

Step-by-step explanation:

5 0
3 years ago
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