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3 years ago

6

-3√-20 written as a complex number

1 answer:

galben [10]3 years ago

3 0

Answer: 3√-20 = 3√20√-1 = (3√20)i

Step-by-step explanation:

√-20 can be written √20√-1 since

(√20√-1)^2 is indeed -20.

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The store salsa jars have a height of ten centimeters and a radius of five centimeters. If

Alex_Xolod [135]

Answer:

471.2 cm³ missing

Step-by-step explanation:

jars are cylinders

volume of cylinder = π * r² * h

h=10

r=5

v=785.4 cm³ of a full jar

r stays the same = 5

h = 4

v= 314.2 cm³ left in the jar

whats missing is the full-left

785.4-314.2=471.2 cm³ missing

6 0

3 years ago

Please answer this question<br><br> ONLY ANSWER IF YOU KNOW FOR SURE

Fittoniya [83]

The answer is 540 m2 hope this helps

7 0

3 years ago

Read 2 more answers

Given that these simultaneous equations

Tatiana [17]

The value of k is $(3\sqrt{ 10})/2$

<h3>How to solve the simultaneous equation?</h3>

Given:

x-y=k.............(eq i)

2x²+y²-15..............(eq ii)

We would make y the subject formula in eq ii

2x²+y²-15= 0

2x² + y²= 15

y²= 15-2x²

y= $\sqrt{15-2x^2}$ ...........(eq iii)

Substitute the value of y into eq i

x-( $\sqrt{15-2x^2}$ = k

x- ( $\sqrt{15} - 2x$ = k

k= $(3\sqrt{ 10})/2$

Read more about simultaneous equations here:

brainly.com/question/16863577

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3 0

2 years ago

40% of the 35 male guests wear glasses

AVprozaik [17]

14 males wear glasses

40*35= 1400
1400/100= 14

7 0

3 years ago

What is the average of 4 1/2, 3 1/3, 2 , 2 1/6

Zinaida [17]

Answer:

3

Step-by-step explanation:

To find the average add all these numbers together, then divide by how many numbers you have.

$4\frac{1}{2} +3\frac{1}{3} +2+2\frac{1}{6} =12$

$\frac{12}{4} =3$

$Answer: 3$

4 0

3 years ago