Mathematics

6 years ago

A 157-lb stone falls from rest from a cliff. If the air resistance is proportional to the square

A 157-lb stone falls from rest from a cliff. If the air resistance is proportional to the square of the stone's speed, and the limiting speed of the stone is 125 ft/s, Find the differential equation of motion.

mathinator 187 N/A

6 years ago

Find the general solution of the differential equation 11xy'=x-11y

Find the general solution of the differential equation 11xy'=x-11y

a. 3xy=c
b. 3x2y/2=c
c. 6xy-x2=c
d. 3xy= x2/2-3y2/2+c

mathinator 190 N/A

6 years ago

Write the equation of the orthogonal trajectories to the family of parabolas x2=ay.

Write the equation of the orthogonal trajectories to the family of parabolas x2=ay.

a. 2x2-2y2=c

b. x2+2y2=c

c. a. x2-2y2=c

mathinator 163 N/A

6 years ago

Use the given boudary condition x = 2 when y = 4 to find the particular solution to the differential

Use the given boudary condition x = 2 when y = 4 to find the particular solution to the differential equation xdx=3ydy.

mathinator 152 N/A

6 years ago

Find the general solution to the differential equation y'-y/x=-20/x2

mathinator 190 N/A

6 years ago

For the circuit of Fig. 28-11, E = 300 V, the resistance varies with time according to the

For the circuit of Fig. 28-11, E = 300 V, the resistance varies with time according to the expression R = 4.00t, and the inductance varies according to time according to the expression L=t2+4.00. The current i as a function of

mathinator 195 N/A

6 years ago

The voltage v across the capacitor in the figure during charging is described b the differential

The voltage v across the capacitor in the figure during charging is described b the differential equation (E – v) / R = C dv/dt. Solve this differential equation to find an equation for the voltage.

mathinator 246 N/A

6 years ago

Find the general solution to the differential equation x dy/dx-y=√(x^2+y^2 ).

Find the general solution to the differential equation $x\dfrac{dy}{dx}-y=\sqrt{{x}^{2}+{y}^{2}}$.

mathinator 199 N/A

6 years ago

17.A 45.5-lb carton is initially at rest. It is then pulled horizontally by a 19.4-lb force in the

17. A 45.5-lb carton is initially at rest. It is then pulled horizontally by a 19.4-lb force in the direction of motion and is resisted by a frictional force which is equal (in pounds) to four times the carton’s velocity (in ft/s). Find t

mathinator 222 N/A

6 years ago

Find the general solution for the differential equation (ydx-xdy)/y^2 =x dx.

mathinator 302 N/A

6 years ago

Find the general solution to the differential equation y’ + 2xy = xe^-x^2 y^3

Find the general solution to the differential equation y’ + 2xy = xe^-x^2 y^3.

mathinator 224 N/A

6 years ago

Find the particular solution to the differential equation y^'=2+ 3y/x using the boundary condition ...

Find the particular solution to the differential equation y^'=2+ 3y/x using the boundary condition x = 2 when y = 6.

mathinator 204 N/A

6 years ago

Write the claim that is suggested by the given statement, then write a conclusion about the claim. ...

Write the claim that is suggested by the given statement, then write a conclusion about the claim. Do not use symbolic expressions or formal procedures: use common sense.

A person claims to have extra sensory powers. A card is drawn at

browniels 110 N/A

browniels

6 years ago

Find derivative of complicated inverse trig function

Derive:

$y=\operatorname{arccot}x+\arctan \left(\frac{2+x}{1-2x}\right)$

Before we start, recall:

$\frac{d}{dx}\operatorname{arccot}x=\frac{-1}{1+x^2}$
[math=inline]\frac{d}{dx

bio_man 387 N/A

5 years ago

How you would use complex numbers in an electrical calculation?

Explain, in writing, how you would use complex numbers in an electrical calculation, and illustrate your explanation with an example.

sean1120 438 N/A

sean1120

5 years ago

Let f be a real function and p ∈Df. Suppose there is some K ∈ R such that for all x ∈Df ...

Let f be a real function and p ∈Df. Suppose there is some K ∈ R such that for all x ∈Df |f(x)−f(p)|≤ K|x−p|.
Prove that f is continuous at p.

gurjot kaur 230 N/A

4 years ago

Let f be a real function and let p ∈ Df. A function |f| is deﬁned by the formula |f|(x) = ...

Let f be a real function and let p ∈ Df. A function |f| is deﬁned by the formula |f|(x) = |f(x)|.
(a) Prove that if f is continuous at p, then |f| is continuous at p.
(b) Show that |f| may be continuous at p when f is discontinuous at p.

gurjot kaur 246 N/A

4 years ago

Let f and g be real functions such that Df ⊆ Dg and let p ∈ Df. Suppose there is some K ∈ R ...

Let f and g be real functions such that Df ⊆ Dg and let p ∈ Df. Suppose there is some K ∈ R such that |f(x)−f(p)|≤ K|g(x)−g(p)|, for all x ∈Df. Prove that if g is continuous at p, then f is continuous at p.

gurjot kaur 260 N/A

4 years ago

Prove that every number in a ﬁnite set A ⊆ R is an isolated point of A.

gurjot kaur 275 N/A

4 years ago

Find the points of intersection of two circles

Quote

i’m having trouble with mine,, 4=x^2 + y^2 and 4=x^2 + y^2 - 2

(1) $4=x^2+y^2$

(2) $4=x^2+y^2-2$

In equation 2, bring the -2 to the left-side of the equation:

bio_man 215 N/A

3 years ago

Paige is a sales person and earns $320 a week plus 4.5% commission on sales. her weekly sale total i

Paige is a sales person and earns $320 a week plus 4.5% commission on sales. her weekly sale total is 80,000 A) Find Her commission B) Her total earnings for the week?

bio_man 143 N/A

3 years ago

When Jamie skis off a ramp, his path can be modeled by h(d) = -4.98 + 4.7d+ 2.5, where dis the ...

The table shows the path of a parabolic gateway, where xis the horizontal distance
from the left support and h is the height of the arch above ground, both in metres.
Find a quadratic equation that models the data in standard form.

Lala JJJ 180 N/A

Lala JJJ

3 years ago

Convert fraction to percent

Quote

example 29/5.... would give me 5 4/5 so is that applicable to the percentage one, like would that have the same method of convertion to a fraction if it was a mixed numeral like on ur final example

Answer:

If you

bio_man 116 N/A

3 years ago

Scrabble board geometrical design.

Scrabble board is a 15*15 square design.

Can there be more or less letters formed if the Scrabble board is designed with a Diamond or Rhombus or Kite Shape?

I mean the 225 squares will be increased or decreased depending o

prashantakerkar 183 N/A

prashantakerkar

2 years ago

How can I find the resultant of the following vectors

how can I find the resultant of the following vectors

a=3í
b=2í-j
c=í+4j

solution:

[img width=350 height=199]https://biolo

bio_man 186 N/A

2 years ago

The price of 3/4-in. copper pipe increased from $5.95 to $7.98 per linear foot at a home building st

The price of 3/4-in. copper pipe increased from $5.95 to $7.98 per linear foot at a home building store. What percent increase is this? Round the percent to one decimal place.

Solution:

Given that the price increased, we

Durham_College 207 N/A

Durham_College

2 years ago

Math 118 -- Combining Algebraic Fractions

Question 1:

$\frac{x+6}{2}+x=\frac{4x+3}{6}$

LCD: 6, thus, multiply both sides by 6:

$6\left(\frac{x+6}{2}+x\right)\ =6\left(\frac{4x+3}{6}\right)$

[math=inline]\

Centennial College 140 N/A

Centennial College

2 years ago

How do solve the derivative of y=x^3-x^2+x-2 using delta method.

How do solve the derivative of $y=x^3-x^2+x-2$ using delta method.

Solution:

[img width=350 height=277]https://biology-forums

bio_man 187 N/A

2 years ago

How can I make a two-way ANOVA given the mean, standard deviation and size?

Urgent please

Aitana. 101 N/A

Aitana.

2 years ago

Waugh-Tendulkar Or Ponting-Tendulkar trophy?

Statistically Waugh or Ponting?

Statistics - Batting, Captaincy in all three cricket formats i.e. Test, ODI & T20.

Waugh-Tendulkar trophy?
Or
Ponting-Tendulkar trophy?

Polling in Australia for the

prashantakerkar 182 N/A

prashantakerkar

A year ago

Determine the number greater than 70 but less than 85 that is divisible by both 2 and 9.(1 point)

Determine the number greater than 70 but less than 85 that is divisible by both 2 and 9.(1 point)Responses

81
81

78
78

84
84

72
72

jjboy817 67 N/A

jjboy817

A year ago

Find the total amount due on the loan using simple interest.

Find the total amount due on the loan using simple interest.Principal: 1000
Rate:6%
Time:18 months

cleosnest 97 N/A

cleosnest

A year ago

The selling price of an item is 600$. After 6 months of not selling, it is marked down by ...

The selling price of an item is 600$. After 6 months of not selling, it is marked down by 30%. After another 6 months of not selling, it is further marked down by 20%. Find the sale price after both markdowns

mangosteve 108 N/A

mangosteve

A year ago

Find the amount of the sales tax and the total cost.

Find the amount of the sales tax and the total cost.Cost of Item:300$
Tax Rate:8%

PSLOPE2014 100 N/A

PSLOPE2014

A year ago

Spheres A and B are similar.

Spheres A and B are similar.The volume of Sphere A x 27 = the volume of Sphere B

How many times greater is the radius of sphere A?

a
3
b
4
c
16
d
27

Lil_jap_72 99 N/A

Lil_jap_72

A year ago

The formula for finding the volume of a cone is large V=frac{1}{3}pi r^2h. The volume of a cone ...

The formula for finding the volume of a cone is \large V=\frac{1}{3}\pi r^2h. The volume of a cone is 500 cm^3 and the height is approximately 13.5 cm, what is the approximate radius of the cone?a
2 cm
b
19 cm
c
15 cm
d
6 cm

sherrilynnbryan 97 N/A

sherrilynnbryan

A year ago

An investment of $4985.28 earns interest at 2.4% per annum compounded annually for 3 years. At that

An investment of $4985.28 earns interest at 2.4% per annum compounded annually for 3 years. At that time the interest rate is changed to 5.2% compounded quarterly. How much will the accumulated value be 3.5 years after the change?

Anonymous 103 N/A

Anonymous

A year ago

How are the kcal/g converted to kj/g

How are the kcal/g converted to KJ/g

Solution:

[/u

bio_man 117 N/A