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3 years ago

7x + 15 = 12x + 5 Solve with multiple operations

Mathematics

2 answers:

tatuchka [14]3 years ago

8 0

Answer:

x = 2

Step-by-step explanation:

5x = 10

x = 2

lukranit [14]3 years ago

5 0

Answer:

x=2

Step-by-step explanation:

First. 7x+15−12x=12x+5−12x

−5x+15=5

Then subtract 15 from both sides

−5x+15−15=5−15

−5x=−10

After that divide both sides by -5 .

−5x

−5

−10

−5

x=2

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Algebra 1 help please

Karo-lina-s [1.5K]

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7 0

3 years ago

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velikii [3]

Answer:

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Step-by-step explanation:

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2 years ago

Which equation represents a line that passes through (2, -1/2) and has a slope of 3?

uranmaximum [27]

Answer: y= 3x - $6\frac{1}{2}$

Step-by-step explanation:

Since we know the slope and a set of coordinates we can insert them into the formula y=mx+b and find what b is.

y=mx+b

-1/2=3(2)+b

-1/2=6+b

-1/2-6=6-6+b

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Therefore the equation is y=3x - $6\frac{1}{2}$

8 0

3 years ago

PLEASE HELP find the vertex of f(x)=x^2+2x+3 (make sure you show your work)

kotegsom [21]

Answer:

(- 1, 2)

Step-by-step explanation:

Given a quadratic in standard form y = ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

f(x) = x² + 2x + 3 ← is in standard form

with a = 1 and b = 2, hence

$x_{vertex}$ = - $\frac{2}{2}$ = - 1

Substitute x = - 1 into f(x) for corresponding value of y

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4 0

3 years ago

Geometry question on finding x.

Dmitrij [34]

Answer:

$x =63^o$

Step-by-step explanation:

Given :-

$\text{ $\overline{MN} $ and $\overline{ML}$ are tangents .}$

We know that the tangents are perpendicular to the radius at the point of contact . And here OLMN is a quadrilateral. Also we know that , the angle sum property a triangle is 360° .

According to question :-

$\implies x + 117^o + 90^o +90^o = 360^o \\\\\implies x + 297^o = 360^o \\\\\implies x = 360^o - 297^o \\\\\implies x = 63^o$

Hence the value of x is 63° .

6 0

3 years ago