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3 years ago

Solve the following equations for ????. Write your answer in set notation.

Mathematics

1 answer:

ddd [48]3 years ago

7 0

Answer:

a. x=7

b. x=4

c. x=5

d. x=4

e. equation b and d have same solution set.

Step-by-step explanation:

3x=21

x=21/3

x=7.

3x+9-5=16

3x+4=16

3x=12

x=12/3

x=4

6x-9-5=16

6x-14=16

6x=30

x=30/6

x=5

6x+18-10=32

6x+8=32

6x=32-8

6x=24

x=24/6

x=4

e. Equation b and d have the same solution set.

The expression on both sides of the equal in the equation d is are twice of the expression in equation b. So, if (right side)=(left side) is true for some values of x, then 2(right side) = 2(left side) will be true for the same values of x.So we can find the solution without finding the solution set of both the equations.

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qwelly [4]

Answer:

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Step-by-step explanation:

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2 years ago

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saw5 [17]

Step-by-step explanation:

1st term =4×2(1-1)=0

2nd term=4×2(2-1)=8

3rd term=4×2(3-1)=16

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2 years ago

the measure of an exterior angle of a triangle is greater than the measure of either of its remove interior angles

postnew [5]

Answer:

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2 years ago

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What is the following qoutient? 3√8/4√6

kogti [31]

Answer:

3 sqrt(3)

----------- or -----------

2 sqrt(3) 2

Step-by-step explanation:

3 sqrt(8)

-----------------

4 sqrt(6)

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-----------------

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We know that sqrt(ab) = sqrt(a) sqrt(b)

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------------------------

4 sqrt(3) sqrt(2)

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----------

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-----------

2 sqrt(3)

We can simplify the answer be multiplying by sqrt(3)/sqrt(3)

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----------- * ----------

2 sqrt(3) sqrt(3)

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-----------

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-----------

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2 years ago

Which expression is equivalent to (4 + 6i)2?

larisa86 [58]

$\bf \textit{recall that }i^2=-1\\\\
-------------------------------\\\\
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\\\\\\
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3 years ago

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