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3 years ago

Use the linear combination method to solve. {x+2y=1 x−2y=5

Mathematics

2 answers:

4vir4ik [10]3 years ago

5 0

Answer:

hi, the answer is 3,-1 (✿◠‿◠), just got an A

Step-by-step explanation:

k0ka [10]3 years ago

3 0

Answer:

Step-by-step explanation:

1) x+27=1

-27 -27

x = -26

2) x-2y=5 (solving for x)

+2y +2y

x = 5 + 2y

2) x-2y=5 (solving for y)

-x -x

2y = 5 -x

2y/2 5/2 -x/2

y = 5 - x

_____

2 (5-x over 2)

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The maximum speed an animal can walk in feet per second is a 5.7VI, where l is the animal's leg length in feet. What is the maxi

ad-work [718]

Answer:

Maximum walking speed of camel is 31.749V feet per second

Step-by-step explanation:

Walking speed of an animal is given by :

Speed = 5.7VI (in feet per second) where l is the animal's leg length.

For a camel, leg length is 5.7feet.

So maximum walking speed of camel will be:

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3 years ago

What is the surface area of a cylinder? Express the answer in term of x D=8cm h=18cm

Ilia_Sergeevich [38]

Answer:

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Step-by-step explanation:

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3 years ago

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The pep club and honor society are joining forces to raise money for school improvements.

Fittoniya [83]

Answer:

Part a) The graph in the attached figure

Part b) see the explanation

Part c) see the explanation

Step-by-step explanation:

Let

x ----> represent pep club donations

y ---> represent donations raised by the honor society

we have

$x+y\geq 500$ ----> inequality A

The solution of the inequality A is the shaded area above the solid line $x+y=500$

$x\geq 100$ ----> inequality B

The solution of the inequality B is the shaded area at right of the solid line $x=100$

Part a) Graph the system of inequalities

using a graphing tool

The solution of the system of inequalities is the shaded area

Remember that the variables x and y cannot be a negative number

see the attached figure

Part b) What does the point (300,100) represent? Is it a viable solution?

The point (300,100) means that the donations raised for pep club was $300 and the donations raised by the honor society was $100

The point (300,100) is not a viable solution, because the point not belong to the shaded area of the solution of the system of inequalities

Verify

If the ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequality

For x=300, y=100

Inequality A

$300+100\geq 500$

$400\geq 500$ ----> is not true

The ordered pair not satisfy the inequality A

therefore

The point (300,100) is not a viable solution

Part c) What does the point (500,200) represent? Is it a viable solution?

The point (500,200) means that the donations raised for pep club was $500 and the donations raised by the honor society was $200

The point (500,200) is a viable solution, because the point belong to the shaded area of the solution of the system of inequalities

Verify

If the ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequality

For x=500, y=200

Inequality A

$500+200\geq 500$

$700\geq 500$ ----> is true

The ordered pair satisfy the inequality A

Inequality B

$500\geq 100$ ---> is true

The ordered pair satisfy the inequality B

therefore

The point (500,200) is a viable solution

3 0

3 years ago

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Sati [7]

Answer:

The top one is right

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Because mp3 has to have the most while none has to have the least

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A yogurt company charges $.72 for a 6 ounce container of yogurt how much does it charge for an 8 ounce container

liraira [26]

Each ounce of yogurt costs $0.12 so 8 ounces would be $0.96

5 0

3 years ago