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adell [148]
3 years ago
8

1. Eight people work in an office. They are paid hourly rates of 12£,15£,15£,14£,14£,13£,14£,13£

Mathematics
1 answer:
bearhunter [10]3 years ago
8 0

Answer:

mean=110/8 =13.75 pounds;  median=14 pounds; mode=14 pounds; average=13.75 pounds

Step-by-step explanation:

mean=add all the numbers together to get total then divide that total by the number of amounts present 12, 15, 15, 14, 14, 13, 14, 13 =110, then 110/8=13.75 pounds

mode=arrange amounts in order (smallest to largest), then determine which amount appears more than the other amounts 12, 13, 13, 14, 14, 14, 15, 15 =14 appears the most

median=organize numbers from smallest to greatest, count how many there are, then determine which number appears in the middle of all of them 12, 13, 13, 14, 14, 14, 15, 15 = there are 8 numbers present but 14 is in the middle; answer =14

average= take total of mean, then divide it by the number of amounts that appear 110/8 =13.75

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Seismologists use the Richter scale to express the energy, or magnitude, of an earthquake. The Richter magnitude of an earthquak
vovikov84 [41]

Answer:

10¹⁸ ergs

Step-by-step explanation:

From the question,

Using the expression

M = \frac{4}{5}log(E/10¹³)................. Equation 1

Where M = Richter magnitude of earth quake, E = Energy released in ergs.

Given: M = 4.0

Substitute into equation 1 amd solve for E

4 = \frac{4}{5}log(E/10¹³)

Log(E/10¹³) = (4×5)/4

Log(E/10¹³) = 5

E/10¹³ = 10⁵

E = 10⁵×10¹³

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E = 10¹⁸ ergs

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3 years ago
Find a polynomial equation that has double zeros at x = -1, and x = 8.
blondinia [14]

Answer:

x^2-7x+8=0

Step-by-step explanation:

(x+1)(x-8)=0

x^2-7x+8=0

3 0
3 years ago
Read 2 more answers
1. Find the value of x<br> 37.5<br> 17<br> 52.5<br> a. 39.5<br> b. 75<br> c. 40<br> d. 42.5
Aleksandr-060686 [28]

Answer:

d

Step-by-step explanation:

The segment inside the triangle bisects the angle and divides the opposite sides into segments that are proportional to the other two sides, that is

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3 0
3 years ago
At their annual car wash, the science club washes 30 cars in 45 minutes. at this rate, how many cars will they wash in 1 hour?
alekssr [168]

Answer:

https://socratic.org/questions/at-their-annual-car-wash-the-science-club-washes-30-cars-in-45-minutes-at-this-r

Step-by-step explanation:

answer is in here yw

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VikaD [51]

Answer:

Step-by-step explanation:

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