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MrRissso [65]
3 years ago
6

An equation is shown below: 5(2x-8) +15 = -15 write the steps you will use to solve the equation and explain each step

Mathematics
2 answers:
faust18 [17]3 years ago
6 0

Answer:

5(2x-8)+15=-15

10x-40+15=-15

10x-25=-15

    +25   +25 (add 25 to both sides)

____________

10x=10

divide by 10 on both sides

x=1

lorasvet [3.4K]3 years ago
4 0

Answer:

x=1

Step-by-step explanation:

First youd distribute the 5 to the 2x-8 so that way you can combine like terms and make the equation smaller

10x - 40 + 15 = -15

combine the -40 and 15

10x - 25 = -15

add 25 to both sides to get 10x by itself on the one side. you have to add 25 to the -15 because the two sides must stay balanced

10x = 10

divide by 10 to get x by itself. you must divide since x is being multiplied by 10

x=1

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-2(3x + 8) − 2 = 10?
Nadusha1986 [10]

Answer:

x = -14/3

Step-by-step explanation:

-2(3x + 8) − 2 = 10

Distribute

-6x -16 -2 =10

Combine like terms

-6x -18 = 10

Add 18 to each side

-6x-18+18 =10+18

-6x =28

Divide each side by -6

-6x/-6 = 28/-6

x = 28/-6

Simplify by dividing top and bottom by 2

x = -14/3

8 0
3 years ago
A merchant buys a television for $125 and sells it for $75 more.What is the percent of markup?
cestrela7 [59]
Since he sold it for $75 more,

% Mark Up = Mark Up/ Cost Price  x 100%

% Mark Up =   75 / 125 x 100%      =   0.6  x 100% = 60%

Percent Mark Up = 60%
Hope this helps :)
3 0
3 years ago
How many digits in hex do you need to represent integers up to 1, 000?
shepuryov [24]
You can convert 1000 to hex and see how many digits that requires:

1000_{10}=(3\cdot16^2+14\cdot16+8)_{10}=3\mathrm e8_{16}

So every integer below 1000 needs up to 3 digits.

Alternatively, we know that 16^2=256, and that 16^n requires n+1 digits in its hex representation (e.g. 16_{10}=10_{16}). Taking the logarithm, we get \log_{16}16^2=2, and adding 1 gives the number of digits needed to represent 16^2. Similarly,


\lfloor\log_{16}1000\rfloor+1=3
8 0
3 years ago
Translate this sentence into an equation.
motikmotik

Answer:

g = 61.

Step-by-step explanation:

g + 9 = 70             Subtract 9 from both sides of the equation:

g + 9 - 9 = 70 - 9

g = 61.

4 0
4 years ago
What is the best fit equation for the trend line in the scatter plot?
nordsb [41]

Answer:

B the line goes down so its a negative gradient

and you do rise which is -1 over run which is 3

7 0
3 years ago
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