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mamaluj [8]
3 years ago
13

Rationalize the denominator of (click photo)

Mathematics
1 answer:
Ede4ka [16]3 years ago
6 0
\frac{\sqrt{-49}}{(7-2i)-(4+9i)}=\\
\frac{\sqrt{-1*7*7}}{3-11i}=\\
\frac{7i}{3-11i}*\frac{3+11i}{3+11i}=\\
\frac{(7i)*(3+11i)}{3^2-(11i)^2}=\\
\frac{21i+77i^2}{9+121}=\\
\frac{21i-77}{130}=\\
\frac{-77+21i}{130}

so it is the last option
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PLEASE HELP! REWARDING BRAINLIEST
TEA [102]
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x-2y=-2…(2)

(1)-(2): (x+2y)-(x-2y)=2- (-2)
4y=4
y=1

subs y=1 into(1)
x+2(1) =2
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the answer is C
7 0
3 years ago
If this trapezoid is moved through the
jeka94

Answer:

Step-by-step explanation:

A(-6,2) =>A'(-5, -1)

B(-5,4) =>B'( -4,1)

C(-2,4)=> C'(-1,1)

D( 1,2) => D'(2,-1)

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2 years ago
Please help!!! I have a chance to get $50 if I get all of these questions right!!
AnnyKZ [126]

Answer:

number 1 is c      number 2 is b,c,e  number 3 is b

Step-by-step explanation:

1: if you see something to the power you will always think of repeated multiplication off the bat. so you just multiply the coefficient by the amount of the exponent.

2: 1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1=1 no

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4*4=16 yes

8*8=64 no

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3: 3/4*3/4*3/4=27/64

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3 0
3 years ago
The length of one edge of a cube is 7 units. What is the volume of this cube in cubic units?HELP ME PLEASE JUSTIFY THE ANSWER th
IRISSAK [1]

Answer:

343 cubic units^3

Step-by-step explanation:

its a cube which means all the sides are the same length, multiply lwh (length x width x height), which would be 7x7x7 or 7^3.

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3 years ago
Which of the following points is the solution of the inequality <br><img src="https://tex.z-dn.net/?f=y%20%3C%20%20-%20%20%7Cx%7
Harman [31]

Answer:

(1,0)

Step-by-step explanation:

Absolute value is represented by using these bars → ║.

║= number of units from 0.

This equation says that whatever number is in the absolute value bars , x , is greater than y.

4 0
2 years ago
Read 2 more answers
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