−9 ⋅ (5j+k) // Have fun!

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

= -45j - 9k


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Show how square root 5 can be represent on number line?

Answers

What they do is basically put it between the square root of 4 and 9, so that's 2 and 3.

What is 15% of 120 and how do you do it

Answers

15%*120=15/100*120=15/10*12 ( u can cancel 1 0 from 100 &120)=3/2*12( by cancelling by 5)=3*6( by cancelling by 2 )=18 ans,,

You have been contracted to replace a countertop in a kitchen. You will get paid $1,000 to do the job. You can complete the job in three days working 8 hours a day. You will need to pay the cost of the materials, which is $525, with the $1,000 that you receive to do the job. How much will you be paid per hour for your time?

Answers

Answer:

$19.79 cents (rounded to the nearest cent)

Step-by-step explanation:

first subtract the amount needed for materials from your total pay

(1000 - 525 = 475)

take 475 and divide that among the hours you work.

475 / 24 = 19.7916666

round that number to the closest money value

19.79

A man walks (12x^2+11x+2) km for (3x+2) hours. What is his speed per hour?

Answers

Step-by-step explanation:

Hey there!

Distance = 12x^2+11x+2.

And Time = 3x+2 hours.

Now;

speed =  (distance)/(time)

Putallvalues.

s =  \frac{12 {x}^(2)  + 11x + 2}{3x + 2}

Usemidtermfactorizationisnumeratorandsimplifythemtogetanswer.

s =  \frac{12 {x}^(2) +  (8  + 3) x+2 }{3x + 2}

s = \frac{12 {x}^(2) + 8x + 3x + 2 }{3x + 2}

s =  (4x(3x + 2) + 1(3x + 2))/((3x + 2))

s =  ((4x + 1)(3x + 2))/((3x + 2))

s = (4x + 1)

Therefore thespeedis(4x+1)/hr.

Hopeit helps..

If you had $10,000 dollars to spend what would you spend it on? Would you invest it or would you save it?

Answers

Answer: Save it

Step-by-step explanation:

The dataset below represents the population densities per square mile of land area in 15 states in the 2010 U.S. Census. What is the interquartile range?

Answers

Answer:

The Interquartile range is 188

Step-by-step explanation:

Missing Data:

1,19,35,43,49,55,63,94,105,110,175,231,239,351,738

Required

Determine the Interquartile range (IQR)

The given data is ordered already.

First, we need to determine the median

For odd number of data

Median = ½(n + 1)th

In this case, n = 15; so

Median = ½(15 + 1)th

Median = ½(16)th

Median = 8th

This implies that the median is at the 8th position.

So, we have:

1,19,35,43,49,55,63 ----> Lower

(94) ---- Median

105,110,175,231,239,351,738 ---- Upper

Next, we determine the median of the lower and upper sets.

These are called lower quartile (Q1) and upper quartile (Q3) respectively

Lower: 1,19,35,43,49,55,63

Number of data, n = 7

Q1 = ½(n + 1)th

Q1 = ½(7 + 1)th

Q1 = ½(8)th

Q1 = 4th position

From the list of data in the lower set,

Q1 = 43

Upper: 105,110,175,231,239,351,738

Number of data, n = 7

Q3 = ½(n + 1)th

Q3 = ½(7 + 1)th

Q3 = ½(8)th

Q3 = 4th position

From the list of data in the upper set,

Q3 = 231

IQR is then calculated as thus:

IQR = Q3 - Q1

IQR = 231 - 43

IQR = 188