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4 years ago

Plz help! 20 points :)

Mathematics

2 answers:

rewona [7]4 years ago

8 0

You are basically looking for the y-intercept which equals 4. Because you replace x with 0 so -10(0)=0 so the answer is y=4

Nitella [24]4 years ago

7 0

Answer:

-6 for one -5 for two 4 for the third

Step-by-step explanation:

You might be interested in

Obtain the general solution to the equation. (x^2+10) + xy = 4x=0 The general solution is y(x) = ignoring lost solutions, if any

alukav5142 [94]

Answer:

$y(x)=4+\frac{C}{\sqrt{x^2+10}}$

Step-by-step explanation:

We are given that a differential equation

$(x^2+10)y'+xy-4x=0$

We have to find the general solution of given differential equation

$y'+\frac{x}{x^2+10}y-\frac{4x}{x^2+10}=0$

$y'+\frac{x}{x^2+10}y=4\frac{x}{x^2+10}$

Compare with

$y'+P(x) y=Q(x)$

We get

$P(x)=\frac{x}{x^2+10}$

$Q(x)=\frac{4x}{x^2+10}$

I.F= $e^{\int\frac{x}{x^2+10} dx}=e^{\frac{1}{2}ln(x^2+10)}$

$e^{ln\sqrt(x^2+10)}=\sqrt{x^2+10}$

$y\cdot \sqrt{x^2+10}=\int \frac{4x}{x^2+10}\times \sqrt{x^2+10} dx+C$

$y\cdot \sqrt{x^2+10}=\int \frac{4x}{\sqrt{x^2+10}}+C$

$y\cdot \sqrt{x^2+10}=4\sqrt{x^2+10}+C$

$y(x)=4+\frac{C}{\sqrt{x^2+10}}$

6 0

3 years ago

Which equation can be used to solve the problem 180 is 40% of what number

Kruka [31]

Answer:

40/100 * x = 40

Solve for x. Hope this helps

6 0

4 years ago

Read 2 more answers

Sum of one-half of a number and 4 is -16. find the number

Lady_Fox [76]

X is the number
sum means add

sum of half a number and 4 means
(x/2)+4
result is -16

(x/2)+4=-16
minus 4 both sides
x/2=-20
times 2 both sides
x=-40
the number is -40

5 0

4 years ago

Which ordered pair is a solution to the system of equations?

enot [183]

Answer:

See below

Step-by-step explanation:

Given system:

2x - y = - 2
15x - 2y = - 7

Solve by elimination, multiply the first equation by - 2 and add up the equations:

-2(2x - y) + 15x - 2y = - 2(- 2) - 7
-4x + 2y + 15x - 2y = 4 - 7
11x = - 3
x = - 3/11

Find the value of y:

2( - 3/11) - y = - 2
-6/11 - y = - 2
y = 2 - 6/11
y = 1/11

Solution is:

( - 3/11, 1/11)

None of the answer choices is matching this solution. Something must be wrong with the given equations.

3 0

3 years ago

100pts Help rounding!

Semmy [17]

Answer:

Step-by-step explanation:

5 158/559

= 5 + 158/559

= 5 + 0.28264758

= 5.28264758

= 5 (rounded to nearest whole number)

4 0

2 years ago

Read 2 more answers