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kykrilka [37]
2 years ago
12

Scores on a history test have average of 80 with standard deviation of 6. What is the z-score for a student who earned a 74 on t

he test? Round your answer to the nearest thousandth.
Mathematics
1 answer:
Olegator [25]2 years ago
5 0

Answer:

12

Step-by-step explanation:

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What is the answer for this problem
solong [7]
I don't know what your story is, but in a story, usually a problem would build tension.

Hope this helps!! :)
6 0
3 years ago
A school debate team has four girls and six boys. A total of four of the team members will be chosen to participate in the distr
alex41 [277]
Procedure:

1) calculate the number of diferent teams of four members that can be formed (with the ten persons)
2) calculate the number of teams tha meet the specification (two girls and two boys)
3) Divide the positive events by the total number of events: this is the result of 2) by the result in 1)

Solution

1) the number of teams of four members that can be formed are:

10*9*8*7 / (4*3*2*1) = 210

2) Number of different teams with 2 boys and 2 girls = ways of chosing 2 boys * ways of chosing 2 girls

Ways of chosing 2 boys = 6*5/2 = 15
Ways of chosing 2 girls = 4*3/2 = 6

Number of different teams with 2 boys and 2 girls = 15 * 6 = 90

3) probability of choosing one of the 90 teams formed by 2 boys and 2 girls:

90/210 = 3/7
 
7 0
3 years ago
Use the picture below to find the length of x. Round your answer to the nearest hundredth.
valentinak56 [21]

Answer: 6.71

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

Work Shown:

The longest horizontal portion of length 6 breaks up into two equal pieces of length 3 each. Focus on the smaller right triangle on the right hand side. This right triangle has legs of 3 and 6. The hypotenuse is x.

Use the pythagorean theorem with a = 3, b = 6, c = x to find the value of x

a^2 + b^2 = c^2

3^2 + 6^2 = x^2

9 + 36 = x^2

45 = x^2

x^2 = 45

x = sqrt(45)

x = 6.7082039

x = 6.71

4 0
2 years ago
Rewrite as a logarithmic equation. <br>7^0=1
RUDIKE [14]
Convert the exponential equation to a logarithmic equation using the logarithm base ( 7 ) 7 of the right side ( 1 ) 1 equals the exponent ( 0 ) 0 . log 7 ( 1 ) = 0
5 0
3 years ago
3) 3 feet = 1 yard. If a quarterback passes for 327 yards during a game.
Yuri [45]
981 feet. You have multiple 3 by 327, which is 981 feet.
7 0
2 years ago
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