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Cerrena [4.2K]
3 years ago
14

1/2x-5=10 find and justify each step

Mathematics
2 answers:
Mrrafil [7]3 years ago
7 0
<span>1/2x-5=10 
Add 5 to both sides
1/2x= 15
Divide 1/2 on both sides so that the only thing remaining on the left side is the variable x.
Final Answer: x=30

To make sure that this is the answer:
1/2(30)=15
Multiply 1/2 by 30
Final Answer: 30=30 Which means that 30 is equal to x.</span>
sergeinik [125]3 years ago
5 0

im guessing youre soling for x so,

1/2x-5=10 ; first step add 5 to both sides

       +5=+5

1/2x=15  ; do get rid of the fraction and get x alone multiply both sides by 2

(2)1/2x=15(2) : the 2 is the recipicol of 1/2 cancelling it out.

x=30

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Carroll’s is putting a border around the edge of a rectangular bulletin board. One side of the bulletin board measures 2 feet an
guapka [62]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

First let's establish that the problem requires the border to be as long as the total perimeter of the rectangular bulletin board.

Therefore:

Total length of border = Perimeter of rectangular bulletin board

As a rectangle has a total of four sides with two equivalent longer sides and two equivalent shorter sides, we must multiply the value of each of the two sides by two.

Total length of border = 2 ( 2 ) + 2 ( 4 )

Total length of border = 4 + 8

Total length of border = 12 feet

12 > 10

ANSWER:

Therefore, 10 feet of border isn't enough.

Please mark as brainliest if you found this helpful! :)
Thank you <3
4 0
4 years ago
Is x 12 or 15? Or none?
Usimov [2.4K]
The answer is 15 buddy!
7 0
3 years ago
Read 2 more answers
Speed, Time, and Dis
serious [3.7K]

Answer:

3 hours

Step-by-step explanation:

Recall:

Distance = speed x time

we are given that speed = 18 km/h and distance = 54 km.

hence,

54 = 18 x time   (divide both sides by 18 and rearrange)

time = 54/18 = 3 hours

7 0
4 years ago
Can someone help me with this question please
Valentin [98]
It’s for sure B the formula for circumference is
Pi times the diameter and the diameter is double the radius so it’s pi multiplied by 8
8 0
3 years ago
If Mr. O'Brien cuts five lawns per day at $40 each, and he has a goal of making $3500, how many days will it take to reach that
Ede4ka [16]

Answer:

17 days and a half.

Step-by-step explanation:

First, we can find how much money he makes per day cutting lawns. This can be found with the equation:

40 x 5 = 200

He makes $200 a day cutting lawns.

Now we can divide his goal money ($3500) by his daily rate ($200) to get the number of days it will take to reach his goal.

3500 ÷ 200 = 17.5

It will take him 17.5 days to reach his goal.

5 0
3 years ago
Read 2 more answers
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