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
stira [4]
3 years ago
7

Simplify each square root:

Mathematics
1 answer:
STatiana [176]3 years ago
8 0
1.\ \sqrt{-25}-isn't\ real\ number\to\sqrt{-25}=\sqrt{25(-1)}=\sqrt{25}\cdot\sqrt{-1}=5i\\\\2.\ \sqrt{1.44}=\sqrt{1.2^2}=1.2\\\\3.\ \sqrt{\frac{16}{49}}=\frac{\sqrt{16}}{\sqrt{49}}=\frac{\sqrt{4^2}}{\sqrt{7^2}}=\frac{4}{7}\\\\\sqrt{-\frac{16}{49}}=\frac{4}{7}i\\\\4.\ \sqrt{361}=\sqrt{19^2}=19\\\\5.\ \sqrt{49}=\sqrt{7^2}=7\\\\6.\ \sqrt{0.64}=\sqrt{0.8^2}=0.8\\\\\sqrt{-0.64}=0.8i

7.\ \sqrt{-6.25}=\sqrt{6.25(-1)}=\sqrt{6.25}\cdot\sqrt{-1}=\sqrt{2.5^2}\cdot\sqty{-1}=2.5i\\\\8.\ \sqrt\frac{169}{196}=\frac{\sqrt{169}}{\sqrt{196}}=\frac{\sqrt{13^2}}{\sqrt{14^2}}=\frac{13}{14}\\\\9.\ \sqrt\frac{25}{324}=\frac{\sqrt{25}}{\sqrt{324}}=\frac{\sqrt{5^2}}{\sqrt{18^2}}=\frac{5}{18}\\====================================

i=\sqrt{-1}\ is\ the\ imaginary\ unit\\---------------------\\If\ a\geq0\ then\ \sqrt{a^2}=a
You might be interested in
Does this equation make sense plz help.
Gnoma [55]
<h3>✽ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ✽</h3>

➷ Simply substitute the values into the equations to see if it's correct:

Since the time taken will be more than 2 hours, we can try it with the value 3

t(x) = 70 + 5(3) = 85

g(x) = 30 + 15(3) = 75

As you can see, this is the incorrect choice as when a value more than 2 hours is used, the second engineer has a cheaper cost.

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

8 0
3 years ago
What is the value of x in the figure?
Bumek [7]

Answer:

29

Step-by-step explanation:

x+61=90

This is because they are complementary angles.

You can tell by the little square in the corner next to them

x=29

4 0
3 years ago
All questions, please help me thanks
Oksi-84 [34.3K]
73 teams
3min. 3sec.
18.5 miles

6 0
3 years ago
Need help with this question pls help
ycow [4]
Well, we have linear terms (the heights and radii of the two cylinders) and cubic terms (the volume of the two cylinders). So, we need to cube the given ratio respective of their order.

2 -> to the power of 3 -> 2×2×2=8
3 -> to the power of 3 -> 3×3×3=27

Therefore, the ratio of the volumes of the two cylinders is 8:27. Your answer is D.
7 0
3 years ago
I need some help with this please
Marianna [84]
15/25 can be divided by 5 so it would be 3/5. Hope it helped!!!
5 0
2 years ago
Read 2 more answers
Other questions:
  • Square
    8·2 answers
  • Devide. (x^3-8x^2+2•(x-3)
    8·1 answer
  • H=10 cm <br>r= 7cm <br>calculate the volume of the cylinder ​
    10·2 answers
  • A ball dropped from the top of the building can be modeled by the function f(t)=-16t^2 + 36 , where t represents time in seconds
    6·2 answers
  • A football team played A games last year. They lost B of those games. What was their winning percentage? 
    13·1 answer
  • Please help asap! I don’t really understand
    5·1 answer
  • Please quys can you help me with this​???? please
    11·1 answer
  • The ________________ is the horizontal number line on the coordinate grid.
    8·1 answer
  • please help please plase please please please please please please please please please please please please please why is pleas
    12·2 answers
  • I need help! who ever get this right and explain nicely then I make you brainlist.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!