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3 years ago

How much is 54 + 12 = ?

Mathematics

2 answers:

Arada [10]3 years ago

5 0

62 is the answer
hope i helped

alexira [117]3 years ago

3 0

Answer:

Step-by-step explanation:

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Can someone help me privately

SSSSS [86.1K]

Answer:

72 degrees

Step-by-step explanation:

2x+3x=180

5x=180

x=36

36*2=72

3 0

2 years ago

How do you integrate arctan(x dx? i think that if you simplify the integral you get:?

Temka [501]

Integration by parts will help here. Letting $u=\arctan x$ and $\mathrm dv=\mathrm dx$ , you end up with $\mathrm du=\dfrac{\mathrm dx}{1+x^2}$ and $v=x$ . Now

$\displaystyle\int\arctan x\,\mathrm dx=uv-\int v\,\mathrm du$
$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\int\frac x{1+x^2}\,\mathrm dx$

For the remaining integral, setting $y=1+x^2$ gives $\dfrac{\mathrm dy}2=x\,\mathrm dx$ , so

$\displaystyle\int\frac x{1+x^2}\,\mathrm dx=\frac12\int\frac{\mathrm dy}y=\frac12\ln|y|+C=\frac12\ln(1+x^2)+C$

Putting everything together, you end up with

$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\frac12\ln(1+x^2)+C$

6 0

3 years ago

John is considering joining an online class music site they charge $15 per month plus 3 dollars per song if John showing how muc

Yuri [45]

Answer:

It will cost 45 dollars

Step-by-step explanation:

8 0

3 years ago

State if the two triangles are congruent. If they are, state how you know.

Gwar [14]

Answer:

The triangles can be congruent.

Step-by-step explanation:

They are congruent if proven by SSS: 2 sides are clearly stated that they are congruent due to the marks they have.

The last side can be congruent if the diagonals are congruent in length by proving.

They can also be congeuent due to SAS because there is gonna be alternate interior angles due to the transversal.

4 0

3 years ago

Ratios that are equivalent to 25%

Nataliya [291]

Percent means parts ot of 100
25%=25/100=1/4
ratio is 1:4 or 2:8 or 6:12

4 0

3 years ago