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4 years ago

Simplify ( 1+3i)=(-2+7i) Help

Mathematics

1 answer:

dalvyx [7]4 years ago

6 0

1+3i=5
3i=5-1
3i=4
this is in standard form

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after a party, you have 2/5 of the brownies you made left over. there are 16 left. how many brownies did you make for the party

vodomira [7]

16 = 2/5
16 ÷ 2 = 2/5 ÷ 2/1
8 = 1/5
8 * 5 = 1/5 * 5
40 = 5/5
You started the party with 40 brownies

7 0

4 years ago

Read 2 more answers

What’s the reciprocal of the number 1 1/2?

Pie

Answer:

2/3

Step-by-step explanation:

To find the reciprocal you first have to turn the mixed number into an improper fraction. (multiply denominator by whole number, then add the numerator, the denominator stays the same)

(1 x 2 )+ 1=3>>numerator | denominator stays the same>>2 | 3/2

Since the reciprocal is the number that you multiply by to get one, you can flip the numerator and denominator to get your reciprocal.

3/2>>2/3 ( the denominator came to the numerator, and the numerator came to the denominator)

2/3 is your reciprocal

To check your work, you can multiply the reciprocal and the regular number, if your answer is 1, then your reciprocal is correct. If your answer is anything else other than one, you may want to rethink your work.

correct reciprocal: 2/5 x 5/2 = 1

incorrect reciprocal: 2/5 x 6/2 = 5/6

8 0

3 years ago

What is the distance between the points ( 19, 4) and (11, 12)?

Olenka [21]

D = $\sqrt{(x_{2}- x_{1})^{2}+ (y_{2} -y_{1})^{2}}$
D = √(11-19)²+(12-4)²
D = √(-8)²+(8)²
D = √64+64
D = √128
D ≈ 11.3137

8 0

3 years ago

write the set notation of the following Venn-diagram I will mark him or her as the brainliest answer

GalinKa [24]

Answer:

A intersection B complement

4 0

3 years ago

4. 10 Unit Test: Surface Area and Volume - Part 1

olga_2 [115]

The shape represented by this solid figure attached is a triangular prism with two triangle base and three rectangular faces.

<h3>What is a solid figure?</h3>

A solid figure is a three dimensional shape having length, width and height. Examples of solid figures are<em> cylinders, cone, pyramid</em> and <em>prism</em>.

The shape represented by this solid figure attached is a triangular prism with two triangle base and three rectangular faces.

Find out more on solid figure at: brainly.com/question/8774322

7 0

3 years ago