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-BARSIC- [3]
3 years ago
11

Is a^2+3b-2a^2 = 3a^2+3b-4a^2

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

Answer:

= 0

Step-by-step explanation:

a² + 3b - 2a² = 3a² + 3b - 4a²

= a² - 2a² - 3a² + 4a² + 3b - 3b

= 0

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Which of the following fitness scores is the highest relative score?
evablogger [386]

Due to the higher z-score, the correct option regarding the highest relative score is:

A score of 4730 on a test with a mean of 3960 and a standard deviation of 555.5.

<h3>What is the z-score formula?</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean, hence the higher the z-score, the higher the score X is relative to other scores.

The respective z-scores for this problem are given by:

  • (39 - 31)/6.1 = 1.31.
  • (1136 - 1080)/67.8 = 0.83.
  • (4730 - 3960)/555.5 = 1.39.

Hence the correct option is:

A score of 4730 on a test with a mean of 3960 and a standard deviation of 555.5.

More can be learned about z-scores at brainly.com/question/28096232

#SPJ1

6 0
2 years ago
Mr. Enders conducted a survey and found that 2/5 of his students play a team sport and 1/4 of those students play basketball. Wh
liubo4ka [24]

Answer:

1/10

Step-by-step explanation:

0.4(2/5) multiplied by 0.25(1/4) which will give you 0.1 which is of course 1/10

7 0
3 years ago
-8x8x8x8 as a power?​
UNO [17]

Answer:

(-8)⁴

Hope this helps!

4 0
3 years ago
3 percent of 30,000,000
Firdavs [7]
The correct answer is 900000
8 0
3 years ago
Read 2 more answers
The perimeter of the rectangle below is 112 units. Find the length of side VW . Write your answer without variables. Top YX: 4z
dimaraw [331]

Answer:

VW = 33

Step-by-step explanation:

<em>See attachment for complete question</em>

Given

VY = 4x - 1

VW = 5x + 3

Perimeter = 112

Required

Determine the length of VW

Perimeter is calculated as:

Perimeter = 2 * (Width + Length)

This gives:

Perimeter = 2 * (VW + VY)

Substitute values for VW, VY and Perimeter

112 =  2 * (4x - 1 + 5x + 3)

Collect Like Terms

112 = 2 * (4x + 5x -1 +3)

112 = 2 * (9x +2)

Divide through by 2

56 = 9x + 2

Collect Like Terms

9x = 56 - 2

9x = 54

x = 54/9

x = 6

Substitute 6 for x in VW = 5x + 3

VW = 5 * 6 + 3

VW = 30 + 3

VW = 33

4 0
3 years ago
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