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QveST [7]
3 years ago
9

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (–

1 + i) + (21 + 5i)?
(–1 + i) + (21 + 5i) + 0
–1 + (i + 21) + 5i
(–1 + 21) + (i + 5i)
–(1 – i) + (21 + 5i)
Mathematics
2 answers:
ExtremeBDS [4]3 years ago
3 0
-( 1 -i ) + (21 + 5i)
Readme [11.4K]3 years ago
3 0

Answer:

Its D on edg

Step-by-step explanation:

follow my ifunny "dankmemehistory"

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What is 243.875 rounded to the nearest tenth,hundreth,ten,and hundred?
ira [324]
Tenth: 243.9
hundreth: 243.88
ten: 240
hundred:200

hope this helps
5 0
3 years ago
What divided by 10² is 22.425
Ipatiy [6.2K]

Answer:

2,242.5

Step-by-step explanation:

10² = 100 (one and 2 zeros ; notice that the exponent is 2 )

Makes sense that we will need a bigger number than 22.425 to divide by 100 to get a 22.425 so move the decimal point to the left 2 spots and get 2,242.5.

2,242.5 /100 = 22.425

4 0
3 years ago
Need this very badly ​
Anuta_ua [19.1K]

Answer:

A 161 square feet

Step-by-step explanation:

5×5=25

1/2 of 25 is 12.5(triangular face) ×2=25

5×8 is 40 (base and left face)

8×7 is 56 (right face)

25+40+40+56=161

5 0
3 years ago
How to solve 3(x+5)=8x
ipn [44]
3(x+5)=8x~~~First we distribute (we multiply 3 by x and 3 by 5)
3x+15=8x~~~Remove 3x from both sides
-3x       -3x
15=5x~~~~Turn this equation around so x is on the other side
5x=15~~~Divide by 5x
÷5x ÷5x

x=3

7 0
3 years ago
Please guys. Would bless you
natima [27]

Answer:

10 hours

Step-by-step explanation:

volume of lower portion = 85x125x40 = 425,000

volume of upper portion = 20x30x125 = 75,000

in 1.5 hours, the pump removed 75,000

in one hour it removed 50,000     (75000/1.5 = 50,000)

425,000 / 50,000 = 8.5 hours for bottom portion

8.5 + 1.5 = 10 hours total time for top and bottom

8 0
4 years ago
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