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3 years ago

Solve 2x^2+x=15.!!!!

Mathematics

1 answer:

larisa86 [58]3 years ago

8 0

Isolate the variable by dividing each side by factors that dont contain variables

Answer: x=3

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Solve 2 log x = log 36. x = 1.6 x = 6 x = 18 x = 72

exis [7]

Answer:

Answer is B. X=6, Positive and negitive terms cancel out

Step-by-step explanation:

6 0

1 year ago

Find the measure of each angle indicated.

Brilliant_brown [7]

Answer:

90 degrees

Step-by-step explanation:

Sum of the angles in a triangle = 180°

Opposite angles are equal

For two parallel lines and a transversal,

corresponding angles are equal, and

alternate angles are equal.

45+45=90.

180-90=90

Plus, you can see that the angle forms a perfect 90 degree angle.

5 0

2 years ago

One step equation 4.-6.solve

tiny-mole [99]

Answer: -2

Step-by-step explanation:

6 0

2 years ago

F=e−yi−xe−yj is conservative. find a scalar potential f and evaluate the line integral over any smooth path c connecting a(0,0)

Alexxx [7]

If $\mathbf F$ is conservative, then there is a scalar function $f$ such that

$\nabla f(x,y)=\mathbf F(x,y)\iff\dfrac{\partial f}{\partial x}\,\mathbf i+\dfrac{\partial f}{\partial y}\,\mathbf j=e^{-y}\,\mathbf i-xe^{-y}\,\mathbf j$

Setting the first components equal to one another, we can integrate both sides to find

$\dfrac{\partial f}{\partial x}=e^{-y}\implies f(x,y)=xe^{-y}+g(y)$

Differentiating both sides with respect to $y$ gives

$\dfrac{\partial f}{\partial y}=-xe^{-y}+\dfrac{\mathrm dg}{\mathrm dy}=-xe^{-y}$
$\implies\dfrac{\mathrm dg}{\mathrm dy}=0$
$\implies g(y)=C$

so that

$f(x,y)=xe^{-y}+C$

By the fundamental theorem of calculus, we have that

$\displaystyle\int_{\mathcal C}\mathbf F\cdot\mathrm d\mathbf r=\int_{\mathcal C}\nabla f\cdot\mathrm d\mathbf r=f(1,1)-f(0,0)=\frac1e$

4 0

2 years ago

I'm confused on this help

adell [148]

Answer:

3x + 8y = 72

19x + y = 72

Step-by-step explanation:

dubbles = x

mimstoons = y

Standard form:

Ax + By = C

3x + 8y = 72

8 0

2 years ago