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Nikolay [14]
2 years ago
10

The following length measurements were taken by students using several different measuring devices. Find . the average of the me

asurements. Make sure that your answer has the correct number of significant figures. . 10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm
Mathematics
2 answers:
Dmitriy789 [7]2 years ago
4 0

Answer:

10.2 cm

Step-by-step explanation:

Data : 10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm

We are supposed to find the average

Average = \frac{\text{Sum of all observations}}{\text{No. of observations}}

Average = \frac{10.05+10.1+9.741+ 10.6+10.5}{5}

Average = \frac{50.991}{5}

Average =10.1982

Rounding off gives Average =10.2

Hence the average of the measurements with the correct number of significant figures is 10.2 cm

marissa [1.9K]2 years ago
3 0
In getting the average of all the measurement you give you need first to sum all the measurements and also make sure that you do it properly. Then divide the sum with the number of measurements. By calculating the answer is 10.288
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two rulers and one pencil cost £2.40 five rulers and one pencil cost £5.10 work out the cost of a ruler and the cost of a pencil
Thepotemich [5.8K]

Answer:

Ruler: £0.90

Pencil: £0.60

Step-by-step explanation:

Ruler = x

Pencil = y

2x + y = 2.4

5x + y = 5.1

3x = 2.7

x = 0.9

y =  0.6

3 0
1 year ago
Suppose a1=12−12,a2=23−13,a3=34−14,a4=45−15,a5=56−16. a) Find an explicit formula for an: . b) Determine whether the sequence is
lorasvet [3.4K]

I'm going to assume you meant to write fractions (because if a_n are all non-negative integers, the series would clearly diverge), so that

a_1=\dfrac12-\dfrac12

a_2=\dfrac23-\dfrac13

a_3=\dfrac34-\dfrac14

and so on.

a. If the pattern continues as above, we would have the general term

a_n=\dfrac n{n+1}-\dfrac1{n+1}=\dfrac{n-1}{n+1}

b. Note that we can write a_n as

a_n=\dfrac{n-1}{n+1}=\dfrac{n+1-2}{n+1}=1-\dfrac2{n+1}

The series diverges by comparison to the divergent series

\displaystyle\sum_{n=1}^\infty\frac1n

4 0
1 year ago
On his first day of school, Kareem found the high temperature in degrees Fahrenheit to be 76.1°. He plans to use the function to
wolverine [178]
The function for conversions from Fahrenheit to Celsius is:

Celsius = (Fahrenheit - 32) x 5/9 

C(76.1) = (76.1 - 32) x 5/9
             = (44.1) x 5/9
             =  24.5

Therefore, 76.1 degrees Fahrenheit = 24.5 degrees Celsius. 
5 0
2 years ago
Read 2 more answers
A pilot was scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes. Air traffic co
alexandr402 [8]

Answer:

a. y equals one third times x plus 10

= y = 1/3(x) + 10

Step-by-step explanation:

Let us represent:

Let the original final plan = x

Let the current flight plan = y

The initial time of departure = 4.00pm

Her flight was then delayed for 10 minutes

We are told in the question that:

The current flight plan allows her arrive at her destination three times faster.

This means y= (1/3)x

y = x/3

Hence the equation generated =

y = x/3 +10

y = 1/3(x) + 10

4 0
2 years ago
Michelle exercises for half an hour every day. How minutes in total does she exercise for over 5 days?
enyata [817]

First, Michelle exercises for thirty minutes every day.

If Michelle exercises for 30 minutes for 5 days, this would 30 × 5.

30 × 5 = 150 minutes

3 0
2 years ago
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