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BARSIC [14]
2 years ago
12

(-3+7i)(1-2i) can you help me with the answer to this

Mathematics
1 answer:
lozanna [386]2 years ago
4 0

Answer:

11 + 13i

Step-by-step explanation:

A must know is that

\sqrt{i}  =  - 1

Complex numbers

1st: foil the equations

- 3(1 - 2i) + 7i(1 - 2i)

- 3 + 6i + 7i- 14 {i}^{2}

2nd Combine like terms and substitute

i ^{2} for \:  - 1

- 3 + 14  + 13i

11  +  13i

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Use this idea to find the value of x in the diagram at<br> right. Be sure to show all work.<br> 71°
EleoNora [17]

We have that  the value of x in the diagram at the right is

x=109

From the question we are told

Use this idea to find the value of x in the diagram at  right.

From The diagram  we have a Triangle with its base angles equal

Generally the equation for the Triangle   is mathematically given as

180=2b+y

Where

b=Base angles

Since Angle on a straight line is 90

Therefore

180=71+x

x=109

In conclusion

The value of x in the diagram at the right is

x=109

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brainly.com/question/14209188?referrer=searchResults

3 0
2 years ago
In a direct variation, the ratio of y -values to x -values is equal to a constant.
liberstina [14]

Answer:

True

Step-by-step explanation:

The equation of direct variation is

y = kx ← k is the constant of variation

To find k divide both sides by x

\frac{y}{x} = k

That is the constant is the ratio of y- values to x- values

3 0
2 years ago
How many shapes would I have on term 104?​
pishuonlain [190]

Answer:

313 shapes

Step-by-step explanation:

The nth term is 3n+1

so 3x104=312+1= 313 shapes

4 0
2 years ago
Tamara has $42.00 to buy party decorations. She wants to buy 3 packs of party hats, 2 bags of balloons, and a banner
posledela

Answer:

Step-by-step explanation:

Add everything together then you get 22.02 and she could buy everything but you gotta figure out the other part b bc I’m stuck on it

7 0
3 years ago
The width of a square tablecloth is 8 feet. What is the area of the tablecloth?
sergij07 [2.7K]

Answer:

The answer is 64

Step-by-step explanation:

Since a square's sides are equal that means the dimensions are equal as well

8 x 8 = 64

5 0
2 years ago
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