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3 years ago

Morgan wants to purchase a Nintendo Switch. He has $94 in his savings.

Mathematics

1 answer:

kogti [31]3 years ago

5 0

Answer:

Step-by-step explanation:

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Angie has 5 less cds than david

maxonik [38]

The answer is the third one

Hope this helps! :)

7 0

3 years ago

Read 2 more answers

Solve the equation for the given variable. justify each step.

s344n2d4d5 [400]

Answer: y= $\frac{5-9x}{2}$

s=-30+10t

Step-by-step explanation:

9x + 2y = 5; y

9x-9x+2y = 5-9x

2y=5-9x

y= $\frac{5-9x}{2}$

1/15s - 2/3t = -2; s

(1/15s - 2/3t = -2)*15 ==> Get rid of fraction by multiplying both sides by 15

s - 30/3 t=-30

s-10t=-30

s=-30+10t

5 0

2 years ago

Solve the Differential equation 2(y-4x^2) dx + x dy = 0

padilas [110]

Assume a solution of the form $\Psi(x,y)=C$ . Taking the differential of both sides would give the ODE

$\Psi_x\,\mathrm dx+\Psi_y\,\mathrm dy=0$

where $\Psi_x=2y-8x^2$ and $\Psi_y=x$ . The ODE is exact if $\Psi_{xy}=\Psi_{yx}$ . We have

$\Psi_{xy}=(2y-8x^2)_y=2$

$\Psi_{yx}=(x)_x=1$

so the ODE is not exact. However, multiplying both sides by $x$ gives

$(2xy-8x^3)\,\mathrm dx+x^2\,\mathrm dy=0$

and now

$(x\Psi_x)_y=(2xy-8x^3)_y=2x$

$(x\Psi_y)_x=(x^2)_x=2x$

so the ODE is now exact.

Now,

$\Psi_x=2xy-8x^3\implies \Psi(x,y)=x^2y-2x^4+f(y)$

$\Psi_y=x^2=x^2+f_y\implies f_y=0\implies f(y)=C$

So the ODE has solution

$\Psi(x,y)=x^2y-2x^4+C=C$

or simply

$\boxed{x^2y-2x^4=C}$

3 0

4 years ago

In ΔXYZ, x = 1.4 cm, z = 2 cm and ∠Z=37°. Find all possible values of ∠X,

liraira [26]

Answer: 24.9

Step-by-step explanation:

3 0

3 years ago

Suppose you select two numbers at random with replacement from the set {1, 2, 3} and then you form a rectangle with the first nu

Natalka [10]

Answer:

Let X be the rectangular distribution

where X is uniformly distribute(3,1)

b=1

a=1

The PMF will be

f(x)=1/b-a

f(x)=1/3-1

f(x)=1/2

f(x)=0.5

6 0

4 years ago