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3 years ago

10

How can one variable equations have more than one solution in some cases and no solutions in others?

2 answers:

yawa3891 [41]3 years ago

7 0

Answer:A system of linear equations usually has a single solution, but sometimes it can have no solution (parallel lines) or infinite solutions (same line).

Step-by-step explanation:

andreev551 [17]3 years ago

5 0

Answer:

There can be more than one solution to a system of equations. A system of linear equations will have one point of intersection, or one solution. To graph a system of equations that are written in standard form, you must rewrite the equations in slope -intercept form.

Step-by-step explanation:

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Flying against the wind, a jet travels 2160 miles in 3 hours. Flying with the wind, same jet travels 6000 miles in 6 hours. What

marissa [1.9K]

Answer:

The velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

Step-by-step explanation:

Let x be the rate of the jet in still air and y be the rate of the wind.

Given:

Velocity against wind, a jet travels 2160 miles in 3 hours.

Velocity against wind $=\frac{2160}{3} = 720 miles/hour$

Flying with the wind, same jet travels 6000 miles in 6 hours.

Flying with the wind $=\frac{6000}{6} = 1000 miles/hour$

As such its velocity against wind is $x-y$

and with wind is $x+y$ therefore

$x-y=720$ ------------(1)

$x+y=1000$ ---------------(2)

Adding equation 1 and 2.

$2x=1720$

$x=\frac{1720}{2}$

$x=860$

Put x value in equation 2

$860+y=1000$

$y=1000-860$

$y=140$

Hence velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

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3 years ago

3x-10>4+7x-3<br><br><br> Please explain.

larisa [96]

3x-10>4+7x-3

3x-10>1+7x

-4x-10>1

-4x>11

x<-11/4

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-TheKoolKid1O1

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STatiana [176]

Your answer would be 80%

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2 years ago

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Write the following inequality in slope-intercept form. 6x+2y≤-46

Furkat [3]

Answer:

Step-by-step explanation:

y=mx+b

y less than or equal to -3x-23

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