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Alexandra [31]
2 years ago
12

2x + y = -5 how do I solve this

Mathematics
2 answers:
ozzi2 years ago
5 0

Answer:

if you are solving for x the answer is -5/2 and for y answer is 5

Step-by-step explanation:

Gekata [30.6K]2 years ago
3 0
2x + y = -5
2x + y + 5 = - 5 + 5
2x + y + 5 = 0

^ These are the steps and the answer in implicit form.


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

^ These are the steps and answer written in Slope intercept form.


2x + y = -5
2x + 0 = -5
2x = -5
*Divide Borge sides by 2
x = -5/2 or -2.5

^ These are the steps and the answer written to find the x- intercept/zero.


2x + y = -5
2 * 0 + y = -5
y = -5

^ These are the steps/answer written to find the y-intercept.
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Find the solution to the initial value problem
Karo-lina-s [1.5K]

Answer:

y = (11x + 13)e^(-4x-4)

Step-by-step explanation:

Given y'' + 8y' + 16 = 0

The auxiliary equation to the differential equation is:

m² + 8m + 16 = 0

Factorizing this, we have

(m + 4)² = 0

m = -4 twice

The complimentary solution is

y_c = (C1 + C2x)e^(-4x)

Using the initial conditions

y(-1) = 2

2 = (C1 -C2) e^4

C1 - C2 = 2e^(-4).................................(1)

y'(-1) = 3

y'_c = -4(C1 + C2x)e^(-4x) + C2e^(-4x)

3 = -4(C1 - C2)e^4 + C2e^4

-4C1 + 5C2 = 3e^(-4)..............................(2)

Solving (1) and (2) simultaneously, we have

From (1)

C1 = 2e^(-4) + C2

Using this in (2)

-4[2e^(-4) + C2] + 5C2 = 3e^(-4)

C2 = 11e^(-4)

C1 = 2e^(-4) + 11e^(-4)

= 13e^(-4)

The general solution is now

y = [13e^(-4) + 11xe^(-4)]e^(-4x)

= (11x + 13)e^(-4x-4)

3 0
3 years ago
Match each whole number with a rational, exponential expression.
Katyanochek1 [597]

1.\\9=3^2\\2.\\196=14^2\\3.\\256=16^2=4^4=2^8\\4.\\225=15^2\\5.\\16=4^2=2^4\\6.\\25=5^2

4 0
2 years ago
0.135 written as a fraction is _____.<br><br><br><br> 5/37<br><br> 27/100<br><br> 27/200
sergij07 [2.7K]
First it would be 135/1000. Then you'd have to simplify.

Simplified, it would be 27/200.
4 0
2 years ago
Read 2 more answers
5 - 3x &gt; -19 <br> Can someone please help me
oksano4ka [1.4K]

Answer:

- 3x > -19 -5

- 3x > -24

3x < 24

x < 8

8 0
2 years ago
A Web music store offers two versions of a popular song. The size of the standard version is 2.8 megabytes (MB). The size of the
Serga [27]

Answer:

Number of high quality version downloads = 880

Step-by-step explanation:

Let,

x be the number of standard version songs downloaded

y be the number of high quality version songs downloaded

According to given statement,

x+y=1600        Eqn 1

2.8x+4.1y=5624     Eqn 2

Multiplying Eqn 1 by 2.8 to eliminate x

2.8(x+y=1600)

2.8x+2.8y=4480     Eqn 3

Subtracting Eqn 3 from Eqn 2

(2.8x+4.1y)-(2.8x+2.8y)=5624-4480

2.8x+4.1y-2.8x-2.8y=1144

1.3y=1144

Dividing both sides by 1.3

\frac{1.3y}{1.3}=\frac{1144}{1.3}\\y=880

Hence,

Number of high quality version downloads = 880

3 0
3 years ago
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