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2 years ago

Solve the inequality -7x >21. What is the graph of the solution

Mathematics

2 answers:

Anni [7]2 years ago

5 0

Answer:

-3 > x

Explanation:

-7x > 21

___ ___

-7 -7

x < -3

Now, whenever we divide or multiply by a negative, we reverse the inequality symbol.

In order to graph this, you do what I call the zero-interval test, which in this case, we plug in 0 for x, and determining whether the statement is false or true, determines which side we shade:

0 < -3 [Since this is a false statement, instead of shading to the right, we shade to the left.]

I am joyous to assist you anytime.

umka21 [38]2 years ago

3 0

Answer:

After solving the inequality -7x >21 the answer is x < -3

Step-by-step explanation:

Solve the inequality -7x >21. What is the graph of the solution

Solving:

-7x > 21

Multiply both sides by -1

The inequality sign is reversed

7x < - 21

Now divide both sides by 7

7x / 7 < -21/7

x < -3

The graph is attached in the figure below.

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natita [175]

Answer:

Step-by-step explanation:

If you used the inequality in C, b being able to be as high as -23, it would make 72 is greater than or equal to 72, which is true.

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2 years ago

Joe spends S3 per square foot on carpet for a square room. If he spends

Serjik [45]

Answer:

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Step-by-step explanation:

You can find out how many square feet he bought by dividing 432 by 3.

432/3=144

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2 years ago

Read 2 more answers

Please help me!

marusya05 [52]

Answer:

Step-by-step explanation:

Nice summary problem.

<AEC

AEC = 360 - 243.5 = 116.5
The number of degrees in 1 rotation of a circle = 360o. You have accounted for 243.5 degrees. What is left over is the answer.

<EAD and <ECD

Both of these are tangents to a circle. Tangents meet radii at 90 degree angles.

<EAD = <ECD = 90 degrees

<ABC

<ABC is 1/2 the central angle. The Central angle is <AEC

< AEC = 116.5
<ABC = 1/2 * 116.5
<ABC = 58.25

<ADC

There are 2 ways of doing this. You should know both of them.

One

All quadrilaterals = 360 degrees. You know three of the angles. You should be able to find ADC

<ADC + 90 + 90 + 116.5 = 360 Add the four angles together.
<ADC + 296.5 = 360 Combine terms on the left
<ADC = 360 - 296.5 Subtract 238.25 from both sides
<ADC = 63.5 Answer

Method Two

<ADC = 1/2 (major Arc - Minor Arc) This formula is fundamental to circle / tangent properties. The Major arc is the larger of the two parts of the circumference of a circle. The Minor arc is the smaller.

<ADC = 1/2(243.5 - 116.5)
<ADC = 1/2(127)
<ADC = 63.5

8 0

3 years ago

P(x)=-4x-2 Find p(a-3)

Marta_Voda [28]

Answer : -4a+10

Substitute (a-3) for x
-4(a-3)-2
-4a+12-2
-4a+10 but can also be written as -2(2a-5)

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2 years ago

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Tom [10]

Answer:

The line is from -3 to 3 and the circles are closed

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2 years ago