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3 years ago

Find the distance between -12 and 14 on a number line

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

Answer:

-12-4=-16

Step-by-step explanation:

the distance between -12 and 14 on number line

-12-4=-16

|-`16|=16

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What is the volume of a rectangular prism with a height of 1.5 feet and a base area of 4.5 square feet?

Delicious77 [7]

Answer:

V = 5.85

Step-by-step explanation:

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3 years ago

Find dy/dx of y = sin inverse ( x - 1 ).

jolli1 [7]

$\frac{1}{ \sqrt{1 - {(x - 1)}^{2} } }$

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2 years ago

There are 24 boys and 16 girls on a playground what is the ratio of boys to total number of children on the playground

Vinil7 [7]

Answer:

24:40 or 3:5

Step-by-step explanation:

24+16=40. 24:40 can be simplified to 3:5.

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7 0

3 years ago

Read 2 more answers

Byron’s workout starts with a

Hatshy [7]

Answer:

An equation in point-slope form that represents Byron’s distance from home, y, after x hours is y=4x+2

Step-by-step explanation:

Speed of Byron = 4 miles / hour

Distance traveled in x hours = $Speed \times time$

Distance traveled in x hours = 4x

We are given that After half an hour of running, he is 2 miles from home

So, Total distance = 4x+2

So, y = 4x+2

Hence an equation in point-slope form that represents Byron’s distance from home, y, after x hours is y=4x+2

7 0

3 years ago

Use the given sample data to construct the indicated confidence interval for the population mean. The principal randomly selecte

Lunna [17]

Answer:

The 90% confidence interval

(74.71, 82.63)

Step-by-step explanation:

Confidence Interval Formula is given as:

Confidence Interval = μ ± z (σ/√n)

Where

μ = mean score

z = z score

N = number of the population

σ = standard deviation

The mean is calculated as = The average of their scores

N = 6 students

(71.6 + 81.0 + 88.9 + 80.4 + 78.1 + 72.0 )/ 6

Mean score = 472/6

= 78.666666667

≈ 78.67

We are given a confidence interval of 90% therefore the

z score = 1.645

Standard Deviation for the scores =

s=(x -σ)²/ n - 1 =(71.6 - 78.67)²+(81.0 - 78.67)²+(88.9 - 78.67)² + (80.4 - 78.67)²+ (78.1 - 78.67)²+( 72.0 - 78.67)2/ 6 - 1

= 5.886047531

= 5.89

The confidence interval is calculated as

= μ ± z (σ/√N)

= 78.67 ± 1.645(5.89/√6)

= 78.67 ± 3.9555380987

The 90% confidence interval

is :

78.67 + 3.9555380987 = 82.625538099

78.67 - 3.9555380987 = 74.714619013

Therefore, the confidence interval is approximately between

(74.71, 82.63)

3 0

3 years ago