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Alexxandr [17]
3 years ago
12

Solve for x. −2x+3=15 Enter your answer in the box. ​ x =

Mathematics
2 answers:
Elza [17]3 years ago
4 0

Answer:

 x = -6

Step-by-step explanation:

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  -2x - 12  =   -2 • (x + 6)

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    -2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

2.2      Solve  :    x+6 = 0

Subtract  6  from both sides of the equation :

                     x = -6

One solution was found :

                  x = -6

Processing ends successfully

plz mark me as brainliest :)

Lorico [155]3 years ago
4 0

Answer: X = -6

Step-by-step explanation:

-2X + 3 = 15

Collect like terms

-2X = 15 - 3

-2X = 12

Divide through with -2

X = -6

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Answer:

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Step-by-step explanation:

Add together all three angles because together they equal 180 degrees

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If a = pi +3j - 7k, b = pi - pj +4k and the angle between a and is acute then the possible values for p are given by​
PIT_PIT [208]

Answer:

The family of possible values for p are:

(-\infty, -4) \,\cup \,(7, +\infty)

Step-by-step explanation:

By Linear Algebra, we can calculate the angle by definition of dot product:

\cos \theta = \frac{\vec a\,\bullet\,\vec b}{\|\vec a\|\cdot \|\vec b\|} (1)

Where:

\theta - Angle between vectors, in sexagesimal degrees.

\|\vec a\|, \|\vec b \| - Norms of vectors \vec {a} and \vec{b}

If \theta is acute, then the cosine function is bounded between 0 a 1 and if we know that \vec {a} = (p, 3, -7) and \vec {b} = (p, -p, 4), then the possible values for p are:

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Maximum (\cos \theta = 1)

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With the help of a graphing tool we get the family of possible values for p are:

(-\infty, -4) \,\cup \,(7, +\infty)

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