3 years ago

How many solutions does y=−2x−4 y=3x+3 have

Mathematics

2 answers:

Wewaii [24]3 years ago

8 0

Answer:

There is one solution

sp2606 [1]3 years ago

4 0

Answer:

It has one (-1.4,-1.2)

Step-by-step explanation:

I graphed both lines on desmos graphing calculator and they only crossed at one point.

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Solve the differential equation dy/dx+4xy=x

Irina-Kira [14]

$\dfrac{\mathrm dy}{\mathrm dx}+4xy=x$
$\dfrac{\mathrm dy}{\mathrm dx}=x(1-4y)$

This ODE is separable, so you can write

$\dfrac{\mathrm dy}{1-4y}=x\,\mathrm dx$

Integrating both sides gives

$-\dfrac14\ln|1-4y|=\dfrac12x^2+C$
$\ln|1-4y|=-2x^2+C$
$1-4y=e^{-2x^2+C}$
$1-4y=Ce^{-2x^2}$
$y=\dfrac{1-Ce^{-2x^2}}4$

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2 years ago

Write a numerical expression representing the following statement:

Andreas93 [3]

Answer:

47 + 40 x 4

Step-by-step explanation:

sum is adding 2 numbers together and you would then multiply 4 after adding :)

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3 years ago

Find the distance between the points (-3, 11) and (5, 5).

marshall27 [118]

Formula for distance between two points:

d = √((x₂-x₁)² + (y₂-y₁)²)

Let point 1 be (-3, 11) and point 2 be (5, 5)

Therefore x₁ = -3, y₁ = 11, x₂ =5, y₂ = 5, and substituting in the formula above.

d = √((x₂-x₁)² + (y₂-y₁)²)

   = √((5- -3)² + (5-11)²)

   = √((5+3)² + (5-11)²)

   = √((8)² + (-6)²) 8² = 8*8 = 64, (-6)² = -6*-6 = 36

   = √(64 + 36)

= √(100)

= 10

Distance = 10 units.

5 0

3 years ago

Pls help due right now!

jeka57 [31]

C is the correct answer

7 0

3 years ago

Read 2 more answers

An amusement park reduced it's admission price to $15.50 per day, but now charges $1.50 per ride. Mark has $26 to spend on admis

gtnhenbr [62]

15.50+1.50x =26
1.50x = 10.50
x = 7
answer: he can ride 7 in one day

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