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muminat
3 years ago
11

Please help me slove this problem 3x - 3 = 12

Mathematics
2 answers:
allsm [11]3 years ago
8 0
The answer is 5! Hope this helps!
Tju [1.3M]3 years ago
6 0

Answer:

x=5

Step-by-step explanation:

We kind of have to work backward.

First, we take 12+3 because when we move it over the equal sign, we make it the opposite.

12+3=15

Our new equation is now, 3x=15

We now take:

3x__=15

The blank represents x, which is 5.

Hope this helps!

-AxekickNebulite

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Exit
Ira Lisetskai [31]

Answer:

its (B) 80

Step-by-step explanation:

i got it right

8 0
2 years ago
A walking path across a park is represented by the equation Y equals negative 2X -7. A new path will be built perpendicular to t
Ulleksa [173]

So we are given an initial equation of: y=2x-7.

We are told that a new path is going to be perpendicular to this line. So to find a slope that is perpendicular to a line, we take the slope of the known line (in this case 2) and we flip it and change the sign. So since this slope is essentially \frac{2}{1}, we are going to flip it to make it \frac{1}{2} and change the sign to make it -\frac{1}{2}.

So now we know that the slope of the perpendicular line is -\frac{1}{2}, we can start a new equation for this line:

y=-\frac{1}{2}x+b

We are also told that the path will intersect at (-2,-3) - this is a solution to the two lines. So to find b in this new equation, let's plug in the x and y values found in the point:

-3=-\frac{1}{2}(-2)+b

Then solve for b:

-3=1+b

b=-4

So then we plug in our value for b and leave x and y:

y=-\frac{1}{2}x-4

So this equation now represents the new path.

3 0
3 years ago
Please someone help me plz help
atroni [7]

Answer:

x = 5

Step-by-step explanation:

Angles in a triangle add up to equal 180

Hence, 10x - 1 + 78 + 53 = 180

( Note that we just created an equation that we can use to solve for x )

We now solve for x using the equation we created

10x - 1 + 78 + 53 = 180

Combine like terms

10x + 130 = 180

Subtract 130 from both sides

10x = 50

Divide both sides by 10

x = 5

3 0
2 years ago
Read 2 more answers
sharon is making greeting cards, each card takes her twenty minutes to make. how many can she complete in two and a half hours?
olga2289 [7]
7 or 8 since 2 and a half hours isnt an even amount of time so thered be an extra 10 minutes
4 0
3 years ago
Please help!
Mrrafil [7]

Answer:

\sf C. \quad \dfrac{1}{9}

Step-by-step explanation:

<u>Addition Law for Probability</u>

\sf P(A \cup B)=P(A)+P(B)-P(A \cap B)

Given:

  \sf P(A)=\dfrac{1}{3}=\dfrac{3}{9}

  \sf P(B)=\dfrac{2}{9}

  \sf P(A \cup B)=\dfrac{4}{9}

Substitute the given values into the formula and solve for P(A ∩ B):

\implies \sf P(A \cup B) = P(A)+P(B)-P(A \cap B)

\implies \sf \dfrac{4}{9} = \sf \dfrac{3}{9}+\dfrac{2}{9}-P(A \cap B)

\implies \sf P(A \cap B) = \sf \dfrac{3}{9}+\dfrac{2}{9}-\dfrac{4}{9}

\implies \sf P(A \cap B) = \sf \dfrac{3+2-4}{9}

\implies \sf P(A \cap B) = \sf \dfrac{1}{9}

4 0
1 year ago
Read 2 more answers
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