A number is divisible by 3 if the sum of the digits of the number is divisible by 3.

1 answer:

8 0

I believe the answer the the question A number is divisible by 3 if the sum of the digits of the number is divisible by 3. Is 504, it makes sense

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PLEASE HELP URGENT THANK YOU

Fynjy0 [20]

So far the only true statement I see is that function f is increasing whilst function g is decreasing.

I cannot say yes to the first one as there is a lack of x-intercepts.

Past the interval of 0,2, there are no changes in the line of function g as it remains the same despite the increase in y. Function f on the other hand has a rate of change.

The y-intercepts are the same (positive 2) so the third statement is out.

8 0

3 years ago

How to similarity and proportions

Paladinen [302]

Http://www.onemathematicalcat.org/Math/Geometry_obj/similarity.htm

3 0

3 years ago

If sin angle X = cos angle Y and m angle X=72 degrees, what is the measure of angle y

nikdorinn [45]

Answer:18

Step-by-step explanation:

Sin72=cosy

0.9511=cosy

Y=cos(inverse)0.9511

Y=18

6 0

3 years ago

What is the rule for reflecting over the y axis

vlabodo [156]

Answer:

A reflection of a point over the y -axis is shown. The rule for a reflection over the y -axis is (x,y)→(−x,y) .

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

X dy/dx +2y =x^2logx by using Bernoulli's Equation

inna [77]

This ODE isn't of Bernoulli type, but it is linear, so we should be able to find an integrating factor to solve it.

$x\dfrac{\mathrm dy}{\mathrm dx}+2y=x^2\log x\implies\dfrac{\mathrm dy}{\mathrm dx}+\dfrac2xy=x\log x$

The integrating factor will be

$\mu(x)=\exp\left(\displaystyle\int\frac2x\,\mathrm dx\right)=x^2$

Multiplying both sides of the ODE by the IF gives

$x^2\dfrac{\mathrm dy}{\mathrm dx}+2xy=x^3\log x$
$\dfrac{\mathrm d}{\mathrm dx}[x^2y]=x^3\log x$
$x^2y=\displaystyle\int x^3\log x\,\mathrm dx$

Integrate the right hand side by parts to get

$x^2y=\dfrac14x^4\log x-\dfrac1{16}x^4+C$
$y=\dfrac14x^2\log x-\dfrac1{16}x^2+\dfrac C{x^2}$

3 0

3 years ago