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3 years ago

10

Mathematics

1 answer:

Phantasy [73]3 years ago

4 0

Answer: The monthly salary of Shenika is less spread out than the monthly salary of Clarissa.

Step-by-step explanation:

Standard deviation measures the spread around the mean of the different variables.

Shenika's monthly salary has a standard deviation of 7.67 while Clarissa has a standard deviation of 12.53. This means that Shenika's monthly salary is less spread out than the monthly salary of Clarissa.

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The mean of Holly's first six math quiz scores was 75%. After taking the seventh quiz, her mean score rose to 77%. What was Holl

alexandr1967 [171]

Let x represent Holly's score on 7th math quiz.

We have been given that the mean of Holly's first six math quiz scores was 75%. This means that the average on 1st 6 math quizzes is 75.

To find the total scores on 1st 6 math quizzes, we will multiply 75 by 6 that is $75\times 6 =450$ .

We will use average formula to find test scores on 7th math quiz.

$\text{Average of 7 math quizzes}=\frac{\text{Sum of scores on 7 math quizzes}}{\text{7 quizzes}}$

$77=\frac{x+450}{7}$

Let us solve for x.

$77\cdot 7=\frac{x+450}{7}\cdot 7$

$539=x+450$

$x+450=539$

$x+450-450=539-450$

$x=89$

Therefore, Molly's score on the 7th math quiz was 89.

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3 years ago

The Han dynasty lasted from 206 B.C. to 9 A.D. How many years did the dynasty last?

Keith_Richards [23]

The han dynasty lasted 215 years old

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4 years ago

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At an automobile factory, 1849 parts are made in 4 hours. What is the average rate at which parts are made per hour?

Rudiy27

Just divide "1849 parts" by "4 hours:" the average rate is 1849/4 parts/hour,

or 1849 parts/ 4 hours, or 462.25 parts/hour, or (rounded off) 462 parts/hour.

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4 years ago

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Log2 (2x + 3) = 3<br> i need help

Sergeu [11.5K]

Answer: x=3.482892

Step-by-step explanation:

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4 years ago

132 packages of clay, 6 clay sticks in each package, 3 sticks go to each student. How many students are able make projects out c

spayn [35]

Answer: 264

Step-by-step explanation: 132 x 6 = 792

792 divided by 3 = 264

Hope this helps

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4 years ago