1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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
You might be interested in
Calculate the perimeter and area for the parallelogram if a = 2.8 ,b = 16.5 and h = 11.5
Nana76 [90]

Perimeter = 2(a+b)

= 2(2.8+16.5)

=2(19.3)

Perimeter = 38.6

Area=base x height

=2.8 x 11.5

=32.2

3 0
3 years ago
Read 2 more answers
Initially, there were equal amount of roses and tulips at a store. Each bouquet was made with 3 roses and 4 tulips. After the bo
egoroff_w [7]

Answer:

12 bouquets

Step-by-step explanation:

Let there be x number of roses and x number of tulips initially at the store.  Each bouquet was made with 3 roses and 4 tulips. Assume that y bouquets were made in total.

If each bouquet was made with 3 roses and 4 tulips, then y bouquets will be made with 3y roses and 4y tulips.

After the bouquets were all made, there were 30 roses and 18 tulips left in the store. This means, if we subtract number of roses that were used in bouquets from total number of roses, the result must be 30. Likewise, for tulips the result would be 18. This can be represented as:

x - 3y = 30                               Equation 1

x  - 4y = 18                                Equation 2

Subtracting Equation 2 from Equation 1, we get:

x - 3y - (x - 4y) = 30 - 18

x - 3y - x + 4y = 12

y = 12

Since y represents the number of bouquets made, we can conclude that 12 bouquets were made in the store.

5 0
3 years ago
Read 2 more answers
What is 0.326 in expanded form
12345 [234]
0.300 + .020 + 0.006 would be 0.326 in expanded form.
3 0
3 years ago
2(x -9) = 9 divided ( - 1/3) what value of x makes the equation true <br> plsss help :)))
Ivanshal [37]

Answer:

x = -9/2

Step-by-step explanation:

1. Divide 9 by -1/3:

\frac{9}{1} ÷ -\frac{1}{3} = \frac{9}{1} · -\frac{3}{1}

= -27

2. Divide both sides by 2:

2(x - 9) = -27

\frac{2(x-9)}{2} = \frac{-27}{2}

(x - 9) = -\frac{27}{2}

3. Add 9 to both sides:

x = -\frac{9}{2}

(or 4.5 if you need it in decimal form)

hope this helps!

6 0
2 years ago
-9/4(1/2)+3/4 divide 5/6
Fed [463]
I think is 3/4 /////
5 0
3 years ago
Other questions:
  • A sprinter ran a race in 11 seconds. What is the domain of this graph?
    13·1 answer
  • What the heck is 1+1 equal. Please explain.
    8·2 answers
  • you have a liter bottle of orange juice you want to divide the juice into one cup amount how many cups can you pour
    5·1 answer
  • Type the correct answer in the box. Assume that π = 3.14, and round your answer to the nearest integer.
    15·2 answers
  • Is (0,0) a solution to this system y&gt;=x^2+x-4; y&lt;=x^2+2x+1
    5·2 answers
  • Find the area of the trapezoid. Leave your answer in simplest radical form.
    12·1 answer
  • MATH HELP PLEASE 5 AND 6
    10·1 answer
  • A bicycle has a listed price of $848.99 before tax. If the sales tax rate is 8.75%, find the total cost of the bicycle with sale
    11·1 answer
  • Put a digit in the gap, such that the answer is a whole number:<br> e<br> 9x - 94-10...
    10·1 answer
  • Find the slope of the line
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!