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3 years ago

Y = –x + 4 x + 2y = –8 How many solutions does this linear system have?

Mathematics

2 answers:

ExtremeBDS [4]3 years ago

6 0

Answer:

Step-by-step explanation:

Y = –x + 4

x + 2y = –8

How many solutions does this linear system have

one solution: (8, 0)

one solution: (0, 8)

no solution

infinite number of solutions

ser-zykov [4K]3 years ago

3 0

Y = - x + 4
x + 2 ( -x + 4 )=-8
x- 2 x + 8 = -8
- x = - 8 - 8
- x = - 16
x = 16
y = - 16 + 4
y = - 12
The system has one solution ( x, y ) = ( 16, - 12 ).

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Someone please help me asap,

professor190 [17]

Answer:

Below is the complete proof.

STATEMENT REASON 

___________________________________________________

1. BC = EF 1. Given

2. AB + BC = AC 2. Betweenness

3. AC > BC 3. Def. of segment inequality

4. AC > EF 4. Def. of congruent segments

Explanation:

As BC = EF is given
AB + BC = AC because it holds betweenness. Betweenness defines that if a point B is between points A and C, then the length of AB and the length of BC is equal to the length of AC.
AC > BC because the Parts Theorem (Segments) mentions that if B is a point on AC between A and C, then AC > BC and AC>AB.
AC > EF because BC = EF and if AC>BC, then it must be AC>EF.

Keywords: segment, proof, statement

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4 years ago

Evaluate 4 + 6 x 6 / 8

dybincka [34]

Answer:

8.5

Step-by-step explanation:

4 + (6)(6)/8=

17/2 = 8.5

5 0

2 years ago

Read 2 more answers

Which of the following statements describe the graphs of the solution set flr this inequality select two that apply

Helga [31]

Answer:

1st . The shaded region of the graph ....

2nd. The graph line is solid.

4th. The ordered pair (2 ; 5) is part of the solution set.

Step-by-step explanation:

. Because y is greater or equal than the line, everything above the line is part of the solution.

. Since y is greater or equal, the line is solid. If y was only greater the line would have been dotted.

. The pair (2 ; 5) represent the x = 2 w/ y = 5, and reading the graph you can see the at this point the lines passes through it.

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3 years ago

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Deffense [45]

Answer:

The spaceship will get to Alpha Centaur in time

Step-by-step explanation:

The complete question in English is

You're the commander of a spaceship. Your mission is to reach Alpha Centaur in five years. The distance from the sun to Alpha Centaur is 2.5 x 10^13 miles. The distance from Earth to Sun is approximately 9.3 x 10^7

miles. Your spaceship can travel at the speed of light. You know that light can travel a distance of 5.88 x 10^12 miles in a year. Can you get to Alpha Centaur in time?

step 1

Find the time it takes for the spaceship to travel from Earth to the Sun

The distance from the Earth to Sun is equal to

$9.3*10^7\ miles$