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3 years ago

5-2i-2(3+i) can you help me with this answer

Mathematics

1 answer:

weeeeeb [17]3 years ago

8 0

Answer:

-1 - 4 i

Step-by-step explanation:

5 - (2 * i) - (2 * (3 + i)) =

-1 - 4 i

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Find x<br> options;<br> a) 21√2/2<br> b) 21√2<br> c) 21√3/2<br> d) 7

pishuonlain [190]

The value of x is 21√2/2

The correct option is (A)

<h3>What is Trigonometry?</h3>

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles.

In triangle having angle 60.

sin 60 = P/ 7√3

√3/2= P/7√3

2P= 21

P= 21/2

Now again

cos 45= 21/2/x

1/√2 = 10.5/x

x= 21√2/2

Learn more about trigonometry here:

brainly.com/question/26719838

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2 years ago

2x+10=28 <br> What is the solution to this equation

grandymaker [24]

Answer:

Step-by-step explanation:

2x + 10 = 28

Bringing like terms on one side

2x = 28 - 10

2x = 18

x = 18/2 = 9

6 0

3 years ago

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One pound of candies costs $3.50. How many pounds of candies can be bought for $7?

faust18 [17]

Answer:

2 pounds

Step-by-step explanation:

4 0

3 years ago

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6% of what number is 270?

Degger [83]

To find this divide 270 by 6%. 270/.06 = 4500. So 20% of 4500 is 270

5 0

3 years ago

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Fill in the blanks to complete the description of how to solve the equation.

Svetach [21]

Answer:

The value of x is the given expression is $\frac{-3}{2}$

Step-by-step explanation:

Given equation is 28x-56=22x-65

To simplify the given equation as below:

28x-56=22x-65

Subtracting 22x on both sides we get

28x-56-22x=22x-65-22x

6x-56=-65 ( adding the like terms )

Adding 56 on both sides we have

6x-56_56=-65+56

6x=-9

Dividing by 9 on both sides

$\frac{2x}{3}=-1$

Multiply into $\frac{3}{2}$ on both side

$\frac{2x}{3}\times(\frac{3}{2})=-1\times(\frac{3}{2})$

$x=\frac{-3}{2}$

Therefore $x=\frac{-3}{2}$

The value of x is the given expression is $\frac{-3}{2}$

8 0

4 years ago

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