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atroni [7]
3 years ago
13

7n + 5 =68.... how to solve this problem and show my work​

Mathematics
2 answers:
mart [117]3 years ago
7 0

Answer:

n=9

Step-by-step explanation:

7n+5=68  Subtract 5 on both sides.

    <u>-5  -5</u>

7n=63       Divide both sides by 7.

<u>/7   /7</u>

n=9

Hope this helps! Have a nice day ^^

snow_tiger [21]3 years ago
5 0

Answer:

n = 9

Step-by-step explanation:

1) Move similar terms to one side. Here we are moving the 5 over to the side with 68 by subtracting it. We also have to subtract 5 from the other side too (what you do to one side you must do to the other)

7n + 5 = 68

     - 5   -5

      7n = 63

2) Isolate the variable. We do this by dividing the 7 from 7n. We also have to divide 7 from other other side too.

     7n = 63

     /7    /7

       n =9

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Convert 0.0000001 to a power of 10.
Murljashka [212]

Answer:

0.0000001 (one ten millionth)

Step-by-step explanation:

3 0
3 years ago
A survey of 1,000 men and women asked, "Do you earn over $50,000 per year?" The table below shows the responses for males and fe
Ierofanga [76]
Given:
Do you earn over $50,000 per year?

                                                    Male           Female            Total
Income over 50,000              475                 375                850
Income below 50,000             75                   75                  150
Total                                           550                 450                1,000

Yes, "being female" and "earning over 50,000" are independent events. Independents events are events that happen where the probability of one event happening is not affected by the happening of the other event. 

In this case, regardless if you are male or female, you can earn over 50,000.
Also if you are female, you either earn under or over 50,000
6 0
4 years ago
Read 2 more answers
the length of a rectangle is 5 centimenters less than twice its width. the perimeter of the rectangle is 26 cm. what are the dem
inysia [295]
L = w - 5
2*l + 2*w = 26
2*(w - 5) + 2*w = 26
2w - 10 + 2w = 26
4w = 36
w = 9
l = w - 5
l = 9 - 5
l = 4

Final Answer:
The rectangle is 4cm long and 9cm wide.
Hope I helped :)
4 0
3 years ago
Find ratio of 13cm : 65m​
vesna_86 [32]

Answer:

1:5

Step-by-step explanation:

13cm: 65cm = 13cm/65cm =13/65 = 1/5= 1:5

6 0
3 years ago
A 10-foot ladder is leaning against a wall, making a 65' with the ground.To the nearest whole foot, how far up the wall will the
Andreas93 [3]

sin = opposite/hypotenuse

sin 65° = x/10 ==> x = 10 * sin 65° = 10 * 0.90631 = 9.06 ft

Answer:

9.06 ft

6 0
1 year ago
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