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andre [41]
2 years ago
5

PLEASE HELP Simplify the expression to a + bi form: √ 25- √ -25 – √ 36 – √ -4

Mathematics
1 answer:
klasskru [66]2 years ago
7 0

Answer:

-1+3i

Step-by-step explanation:

\sqrt{25}  -  \sqrt{ - 25}  -  \sqrt{36}  -  \sqrt{ - 4}

Sqr root of 25 and 36 are 5 and 6 respectively

Sqr root of -25 and -4 are 5i and 2i respectively

Combine like with like

5-6=-1

5i-2i=3i

-1+3i

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Y=6x-11 -2x-3y=-7 solve each system of equation by substitution
Anit [1.1K]

Answer:

(2, 1 )

Step-by-step explanation:

Given the 2 equations

y = 6x - 11 → (1)

- 2x - 3y = - 7 → (2)

Substitute y = 6x - 11 into (2)

- 2x - 3(6x - 11) = - 7 ← distribute and simplify left side

- 2x - 18x + 33 = - 7

- 20x + 33 = - 7 ( subtract 33 from both sides )

- 20x = - 40 ( divide both sides by - 20 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 6(2) - 11 = 12 - 11 = 1

Solution is (2, 1 )

5 0
3 years ago
Garth is packing boxes with books.the list shows how many books are in each 10 of boxes
SCORPION-xisa [38]

The median of books to a box is 9 and The mean of books to a box is 11

The complete question is

Garth is packing boxes with books. The list shows how many boxes are in each of 10 boxes. 6,14,6,18,9,9,12,10,11,15

Which statement is true about the number of boxes packed to a box?

A) The median # of books to a box is 8

B) The median # of books to a box is 9

C) The mean # of books to a box is 11

D) The mean # of books to a box is 12

<h3>What is Mean and Median ?</h3>

Mean is the average of the data given while the median is the middle point of the data.

It is given that

The data is

6, 14, 6, 18, 9, 9, 12, 10, 11, 15

The mean is

(6 + 14 + 6 + 18 + 9 + 9 + 12 + 10 + 11 + 15)/10 = 11

and the median is 9

Therefore Option B and C is the correct answer.

To know more about Mean and Median

brainly.com/question/17060266

#SPJ1

3 0
1 year ago
1 hundreds +5 tens +12 ones
charle [14.2K]
<span>1 hundreds + 5 tens + 12 ones

= 100 + 50 + 12 

= 162</span>
8 0
3 years ago
Read 2 more answers
1+h+j.h÷4; use h=8, and j=2​
horrorfan [7]

Answer:

1+8+2/4 = 9.5

Step-by-step explanation:

yeppp that's itttt

8 0
3 years ago
Kerry donated 1/10 of her $500 savings to a charity. How much money did she donate?
attashe74 [19]

Answer:

$50

Step-by-step explanation:

1/10 of $500 =

= 1/10 * $500

= $500/10

= $50

7 0
3 years ago
Read 2 more answers
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