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jek_recluse [69]
2 years ago
7

Solve the equation 5n+7=21

Mathematics
2 answers:
Simora [160]2 years ago
5 0

Answer:

Hi there, I believe the answer to this equation is: 2.8

Step-by-step explanation:

Subtract 7 on both sides so

5n+7=21-7

you are left with 5n=14 you need to get n by itself so divide 5 on both sides.

5n/5 = 14/5

n=2.8

Hope this is correct :)

Have a great day

kondor19780726 [428]2 years ago
5 0

Answer:

Subtract 7 on both sides so

5n+7=21-7

you are left with 5n=14 you need to get n by itself so divide 5 on both sides.

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tim earns $150/week plus $15.00 for each desk he assembles. Write an inequality to represent how many desks he needs assemble to
Gennadij [26K]

x = number of desks needed to make

equation:  150 +15.50x >= 400


solution:

150 +15.50x >=400

15.50x = 250

x = 250/15.50 = 16.129

he needs to assemble 17 desks

15.50*17 = 263.50 +150 = $413.50


3 0
3 years ago
Find the fraction equivalent to 8/24 in lowest term
olga2289 [7]
\frac{\big{8}}{\big{24}} = \frac{\big{8:8}}{\big{24:8}} = \frac{\big{1}}{\big{3}}
5 0
3 years ago
Read 2 more answers
I’m stuck on number 8 plz help anyone !!
levacccp [35]

Answer:

Sally's km/h during the first half hour is 7 .

<em>The lowest average speed is between the 3rd and 4th stops.</em>

Step-by-step explanation:

On the table during the first half hour, Sally traveled 7 km.

From the first stop to the second stop, she traveled 8 km; from the second stop to the third stop, she traveled 6 km; from the third stop to the fourth stop, she traveled 3 km; from the fourth stop to the fifth stop, she traveled 4 km; and from the fifth stop to the sixth stop she traveled 8 km. Therefore The lowest average speed is between the 3rd and 4th stops.

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8 0
3 years ago
What is the radius in centimeters of a circle that has a circumference of 16 centimeters
Whitepunk [10]
If I did this correctly all you hade to do is work in reverse. 
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2.) Since Diameter is just the radius doubled divide 5.1 by 2. 5.1 /2 = 2.55
3.) Plug it in, use the 2pir equation to see if it works.  2X3.14X2.55= 16.014 or 16.
                     I hope this helps, let me know if you need further explanation.
3 0
3 years ago
A circle with radius r is inscribed inside a square with a side length s. Use 3.14 for TT. Round answers to the nearest hundredt
DerKrebs [107]

The expression for the area of the shaded region is s^2 - pir^2

<h3>Area of composite figure</h3>

The formula for calculating the area of the shaded part in the given equation is expressed as:

Area  area of square. - area of circle

Since

Area of square = s^2

Area of circle = pir^2

substitute

Area of shaded part = s^2 - pir^2

Hence the expression for the area of the shaded region is s^2 - pir^2

Learn more on area of composite shape here: brainly.com/question/8370446

#SPJ1

4 0
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