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Irina-Kira [14]
2 years ago
5

Does the equation 2x+ 3y=-6, 4x+6y=-12 have infinetley many solutions

Mathematics
2 answers:
Grace [21]2 years ago
6 0

Answer:

Infinitely many solutions.

Step-by-step explanation:

Let's solve your system by substitution.

2x+3y=−6;4x+6y=−12

Step: Solve2x+3y=−6for x:

2x+3y=−6

2x+3y+−3y=−6+−3y(Add -3y to both sides)

2x=−3y−6

2x/2 = −3y−6/2

(Divide both sides by 2)

x= −3/2y−3

Step: Substitute −3/2y−3 for x in 4x+6y=−12:

4x+6y=−12 4(−3/2y−3)+6y=−12

−12=−12(Simplify both sides of the equation)

−12+12=−12+12(Add 12 to both sides)

0=0

Answer:

Infinitely many solutions.

Vadim26 [7]2 years ago
5 0

Answer:

Yes it has infinity of solutions.

Step-by-step explanation:

If you plug in certain numbers it will make the statements true.

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3 years ago
Technology is also known as Applied Science because it involves "using" science to make something useful for mankind.
goblinko [34]

Answer:

true

Step-by-step explanation:

The terms 'technology' and 'applied science' will be taken here as synonymous, although neither is adequate: in fact, 'technology' sug- gests the study of practical arts rather than a scientific discipline, and 'applied science' suggests the application of scientific ideas rather than that of the scientific method

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Gary earned a gross pay of $1,047.30 last week. Using the fact that Social Security tax is 6.2% of gross pay, determine the amou
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3 years ago
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In ΔHIJ, h = 40 cm, ∠J=20° and ∠H=93°. Find the length of j, to the nearest centimeter.
DaniilM [7]

Given:

In ΔHIJ, h = 40 cm, ∠J=20° and ∠H=93°.

To find:

The length of j, to the nearest centimeter.

Solution:

According to Law of sine,

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

In ΔHIJ, using law of sine, we get

\dfrac{j}{\sin J}=\dfrac{h}{\sin H}

\dfrac{j}{\sin (20^\circ)}=\dfrac{40}{\sin (93^\circ)}}

j=\dfrac{40\times \sin (20^\circ)}{\sin (93^\circ)}}

On further simplification, we get

j=\dfrac{40\times 0.34202}{0.99863}

j=\dfrac{13.6808}{0.99863}

j=13.69958

Approximate the value to the nearest centimeter.

j\approx 14

Therefore, the length of j is 14 cm.

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3 years ago
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