All categories

3 years ago

HELP PLEASE ASAP PLEASE HELP

Mathematics

1 answer:

I am Lyosha [343]3 years ago

6 0

Answer:

Step-by-step explanation:

....

You might be interested in

The general solution of 2 y ln(x)y' = (y^2 + 4)/x is

Sav [38]

Replace $y'$ with $\dfrac{\mathrm dy}{\mathrm dx}$ to see that this ODE is separable:

$2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}$

Integrate both sides; on the left, set $u=y^2+4$ so that $\mathrm du=2y\,\mathrm dy$ ; on the right, set $v=\ln x$ so that $\mathrm dv=\dfrac{\mathrm dx}x$ . Then

$\displaystyle\int\frac{2y}{y^2+4}\,\mathrm dy=\int\dfrac{\mathrm dx}{x\ln x}\iff\int\frac{\mathrm du}u=\int\dfrac{\mathrm dv}v$

$\implies\ln|u|=\ln|v|+C$

$\implies\ln(y^2+4)=\ln|\ln x|+C$

$\implies y^2+4=e^{\ln|\ln x|+C}$

$\implies y^2=C|\ln x|-4$

$\implies y=\pm\sqrt{C|\ln x|-4}$

4 0

3 years ago

the cost per minute of a conference phone call, originally $2.80, increased by 20%. What is the new price?

erica [24]

Y=2.80(1.20)^1
=$3.36

4 0

3 years ago

Read 2 more answers

PLZ HURRY IT'S URGENT!

Furkat [3]

Answer:

D. 12 units

Step-by-step explanation:

The distance between two points is found by

d = sqrt( (x2-x1)^2 + (y2-y1)^2)

sqrt( (4 -4)^2 + (-5-7)^2)

sqrt((0^2 + (-12)^2)

sqrt(0+144)

sqrt(144)

4 0

3 years ago

How can I use models to help me divide??

Ivan

You can use models to help you divide by making the number of models as your divisor. For example let's say I am dividing 8 ÷ 2. So you would make 8 circles (doesn't have to be circle it can be whatever like squares) and then make groups of 2 until you run out of circles. Then how many groups there are is your answer. 8÷2=4. Hope I helped!

4 0

3 years ago

A cereal comes in three different package size what is the ratio of the cost of an 8 ounce box to a 16 ounce box of cereal

34kurt

Answer:

5-3 or 3-5

Step-by-step explanation:

8 0

3 years ago