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Goryan [66]
3 years ago
8

3(2x-4)-5(x+3)2 Which expression is the simplest form of 3

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

Step-by-step explanation:

multiply the expression out keeping in mind order of operation so paranthesis first

6x-12-10(x+3)

6x-12-10x-30

combine like terms

-4x-42=0

-4x=42

x= - 21/2

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A successful basketball player has a height of 6 feet 5 inches, or 196 cm. Based on statistics from a data set, his height conve
SVETLANKA909090 [29]

Answer:

The player's height is 3.02 standard deviations above the mean.

Step-by-step explanation:

Consider a random variable <em>X</em> following a Normal distribution with parameter <em>μ</em> and <em>σ</em>.

The procedure of standardization transforms individual scores to standard scores for which we know the percentiles (if the data are normally distributed).  

Standardization does this by transforming individual scores from different normal distributions to a common normal distribution with a known mean, standard deviation, and percentiles.

A standardized score is the number of standard deviations an observation or data point is above or below the mean.

The standard score of the random variable <em>X</em> is:

Z=\frac{X-\mu}{\sigma}

These standard scores are also known as <em>z</em>-scores and they follow a Standard normal distribution, i.e. <em>N</em> (0, 1).

It is provided that the height of a successful basketball player is 196 cm.

The standard value of this height is, <em>z</em> = 3.02.

The <em>z</em>-score of 3.02 implies that the player's height is 3.02 standard deviations above the mean.

3 0
3 years ago
Please help 30 POINTSSSSS
sveta [45]

Answer:

-16

Step-by-step explanation:

0.44×10^-15

4.4×10^-16

4 0
2 years ago
Express as a percentage<br>25​
motikmotik

Answer:

25000%

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Question on picture attached, easy but i’m stuck (need help asap)
Ludmilka [50]

Answer:

∠CDF = 54

Step-by-step explanation:

In ΔAEB,

AE ≅ AB

∠ABE = ∠E  = x   {Angles opposite to equal sides are equal}

∠EAB + ∠E +∠ABE = 180  {angle sum property of triangle}

  26  + x + x  = 180

      26 + 2x = 180

              2x = 180 - 26

             2x = 154

               x = 154/2

x = 77

∠ABE = ∠E = 77

In quadrilateral AECF

∠A + ∠E + ∠C + ∠F = 360

90 + 77 + ∠C  + 90 = 360

                ∠C + 257 = 360

                        ∠C = 360 - 257

    ∠C = 103

∠FCD + ∠BCD  = ∠C

∠FCD +  67 =  103

        ∠FCD = 103 - 67

        ∠FCD  = 36

ΔFCD,

∠FCD + ∠CDF + ∠CFD = 180

36 + ∠CDF + 90 = 180

       ∠CDF + 126 = 180

                   ∠CDF = 180 - 126

                  ∠CDF = 54

7 0
3 years ago
If Robert was on a train and he ate 7 apples in 20 minutes, and the train takes 2 hours to get Florida how many apples will he h
Fittoniya [83]

Answer: first multiply then determine if you should add or subtract.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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