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3 years ago

Solve the equation 2x - 3 plus 4x = 21

Mathematics

1 answer:

vichka [17]3 years ago

4 0

Answer:

$x=3$

Step-by-step explanation:

Add like terms and get x by itself.

$2x-3+4x=21\\6x-3=21\\6x=18\\x=3$

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2 years ago

What two numbers multiply to -39 and add to -10

Ainat [17]

These numbers are 3 and -13;

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Since 13 is negative, we have -13 + 3 = -10.

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so your answer is; -13 and 3

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1 year ago

Given the circle with the equation x2 + y2 = 5, determine the location of each point with respect to the graph of the circle. In

Maslowich

Answer:

A) (-1,1) -----> The ordered pair is on the interior of the circle

B) (-2,1) -----> The ordered pair is on the circumference of the circle

C) (4,-8) -----> The ordered pair is on the exterior of the circle

Step-by-step explanation:

we know that

In this problem

1) If a ordered pair satisfy the equation $x^{2} +y^{2}=5$

then

The ordered pair is on the circumference of the circle

2)If a ordered pair satisfy the inequality $x^{2} +y^{2}>5$

then

The ordered pair is on the exterior of the circle

3)If a ordered pair satisfy the inequality $x^{2} +y^{2}< 5$

then

The ordered pair is on the interior of the circle

<u><em>Verify each case</em></u>

case A) (-1,1)

For x=-1, y=1

$-1^{2} +1^{2}=2$

$x^{2} +y^{2}< 5$

therefore

A) (-1,1) -----> The ordered pair is on the interior of the circle

case B) (-2,1)

For x=-2, y=1

$-2^{2} +1^{2}=5$

$x^{2} +y^{2}= 5$

therefore

B) (-2,1) -----> The ordered pair is on the circumference of the circle

case C) (4,-8)

For x=4, y=-8

$4^{2} + (-8)^{2}=80$

$x^{2} +y^{2}> 5$

therefore

C) (4,-8) -----> The ordered pair is on the exterior of the circle

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Answer:

Step-by-step explanation:

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