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frosja888 [35]
3 years ago
12

1/2 x + 3 = 15 what is the x

Mathematics
2 answers:
sergey [27]3 years ago
6 0

Answer:

x=24

Step-by-step explanation:

x/2+3=15

-3 both sides

x/2=15−3

15-3=12

x/2=12

12*2=24

x=24

bulgar [2K]3 years ago
6 0

Answer:

x=2/5=0.400

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    1/2*x-(3/15)=0

Simplify 1/5

(1/2 * x - 1/5 = 0

Simplify 1/2

Find the Least Common Multiple

     The left denominator is :       2

     The right denominator is :       5

Least Common Multiple:

     10

Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x * 5 - (2)/10 = 5x - 2/10

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

5x-2/10 * 10 = 0 * 10

Now, on the left hand side, the  10  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  5x-2  = 0

Solve  :    5x-2 = 0

Add  2  to both sides of the equation :

                     5x = 2

Divide both sides of the equation by 5:

                   <em> x = 2/5 = 0.400</em>

<em></em>

<em>
hope this helps! -Quentin
</em>

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What property is used in the second step of solving the inequality below?
labwork [276]

The property used is B: addition property

Step-by-step explanation:

The addition property of equality states that if you add the same number to both sides of an equation, the equation balances.In this case;

5x-9<91------------performing addition property of equality

5x-9+9<91+9

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Learn More

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4 0
4 years ago
How many solutions does the equation -9(x+6)=-9x+108 have?
elixir [45]

Answer:

No solution

Step-by-step explanation:

Simplify the equation to solve for x.

-9(x+6)=-9x+108  Distribute

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+9x       +9x

0-54=108 Combine like terms

 +54  +54

0=162 No solution

4 0
4 years ago
Find the slope of the line through (–9, –10) and (–2, –5). A. –five-sevenths B. seven-fifths C. five-sevenths D. –negative seven
vredina [299]

Answer:

C 5/7

Step-by-step explanation:

We can find the slope of a line using

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   = (-5 - -10) /(-2 - -9)

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8 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
larisa86 [58]

Answer: (C) divide by 1

<u>Step-by-step explanation:</u>

when dividing by x - 1, set the expression equal to zero to find the zero.  That is actually what you are dividing by:

x - 1 = 0   ⇒   x = 1

so the number outside of the synthetic division symbol is 1.


4 0
3 years ago
(I need these answered asap and with work and explanation included)
erik [133]

Answer:

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4 0
2 years ago
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