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steposvetlana [31]
3 years ago
11

Which expression has a value of 1?

Mathematics
2 answers:
Ket [755]3 years ago
8 0

Answer:

x/x=1

Step-by-step explanation:

when divide any two things which are equal then the answer is 1!!!

myrzilka [38]3 years ago
7 0

Answer:

x/x=1

Step-by-step explanation:

is the answer to your problem :)

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How much work is done in lifting a 1.4-kg book off the floor to put it on a desk that is 0.7 m high?
nalin [4]

Answer:

Step-by-step explanation:

Work is said to be done when a force applied to an object cause the body to move in a specified direction.

Work-done = Force * Distance

Since Force = mass * acceleration due to gravity

Work-done =  mass * acceleration due to gravity * distance

Given mass = 1.4kg, distance = 0.7m and g = 9.8m/s²

Workdone in lifting the book off the floor = 1.4*0.7*9.8

Workdone = 9.604Joules

- Similarly, work done in lifting a 21-lb weight book 6 ft off the ground is expressed using the same formula as above;

Given mass = 21-lb, g = 32ft/s² and distance = 6ft

Workdone = 21 * 32 * 6

Workdone = 4,032 lb-ft²/s²

Hence, work-done in lifting a 21-lb weight book 6 ft off the ground is  4,032 lb-ft²/s²

3 0
3 years ago
Your lunch account has $22 and you spend $2.20 on it each day write an equation for the line
Nikitich [7]

Answer:

you would write 2.20x = 22

Step-by-step explanation:


8 0
3 years ago
Sally has been measuring the tree in her yard for a science project. The tree has grown 1/2 of an inch each month and gotten a t
Studentka2010 [4]
4 months because, 2 divided by 0.5 is 4 therefore she has been measuring the tree for 4 months
8 0
3 years ago
Read 2 more answers
The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction wo
Talja [164]

The statement his friend’s statement  is not accurate. The percent increase will be more than 2% is correct.

We have the average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012.

<h3>What is the meaning of avarage?</h3>

An average value is defined as the sum of all the values divided by the total number of values in a given data.

Therefore we get,have ion industry  average hourly earnings, 2000-2009 a line graph titled construction industry, average hourly earnings (dollars), 2000 to 2009,

where the x-axis shows years and the y-axis shows average hourly earnings of production workers.

line starts at 17.2 on january 2000, slowly increases to 19.7 on january 2006, then increases more quickly to 20.5 on january 2007 and 22.4 on january 2009

<h3>What is the meaning of increasing 2%?</h3>

The percent increase between two values is the difference between a final value and an initial value, expressed as a percentage of the initial value.

Therefore from the given data line starts

17.2 on january 2006

20.5 on janury 2007

22.4 on janury 2009

It seems that The option B is correct.

Therefore,his friend’s statement  is not accurate. The percent increase will be more than 2%.

To learn more about the percentage value visit:

brainly.com/question/11360390

7 0
2 years ago
WHY is the work they give us online harder than the work we get at school? SOMEBODY PLEASE HELP :(
Dmitry_Shevchenko [17]

Answer:

First question

Circle A:

Radius:2.5 Diameter: 5 Circumference:15.71

Circle B:

Radius:12 Diameter:24 Circumference:75.4

Circle C:

Radius:32 Diameter:64 Circumference:201.06

Circle D:

Radius:42 Diameter:84 Circumference:263.89

Second one:

without Pi

1:81.68

2:37.7

3:263.89

with pi

1:26π

2:12π

3:84π

sorry, i have to keep looking back at the photo

for the last question i will be solving ok

8 0
3 years ago
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