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
The value
ehidna [41]

Answer:

A

Step-by-step explanation:

Check the solution by substituting x = \frac{\pi }{2} into the left side of the equation

2sin²x - sinx - 1

= 2sin²(\frac{\pi }{2} ) - sin (\frac{\pi }{2} ) - 1

= 2(1)² - 1 - 1

= 2 - 1 - 1

= 0

= right side

\frac{\pi }{2} is therefore a solution to the equation

7 0
3 years ago
You are hiking in the woods at a rate of 3 mph. The function y=3x describes how many miles y you walk in x hours. create an inpu
Finger [1]

Answer:

x ---- y

1 ---- 3

4 ---- 12

6 ---- 18

Step-by-step explanation:

Given

y = 3x

Required

Create a table that represents this scenario

Because x represents time, x can not be negative. So, the domain of x is:

x \geq 0

Assume x = 1

y = 3 * 1 = 3

Assume x = 4

y=3*4 = 12

Assume x = 6

y=3*6 = 18

Hence, the table is:

x ---- y

1 ---- 3

4 ---- 12

6 ---- 18

4 0
3 years ago
Identify whether each cube root or square root lies between 2 and 3, 4 and 5, or 9 and 10.
leva [86]

Answer:

The cube root and square root are not given, but I'm going to give a chart that might help.

Square roots:

2 = √4

3 = √9

4 = √16

5 = √25

9 = √81

10 = √100

Cube roots:

2 = ^3√8

3 = ^3√27

4 = ^3√64

5 = ^3√125

9 = ^3√729

10 = ^3√1000

3 0
3 years ago
4 people stacked 40 pizzas . Ronnie stacked 0.25 of the pizzas and Mack stacked 9 outa the 40 and Kim stacked 35% so how many di
saw5 [17]

Answer:

7

Step-by-step explanation:

No. of pizza Ronnie stacked = 0.25 × 40

                                               = 10

No. of pizza Mack stacked = 9

No. of pizza Kim stacked = \frac{35}{100} × 40

                                         = 14

No. of pizza Ada stacked = 40 - 10 - 9 - 14

                                          = 7

3 0
3 years ago
Read 2 more answers
Martin can run 1 mile in 7 minutes wjat do u write it in proportions
Vikki [24]

Answer:

1:7

Step-by-step explanation:


3 0
3 years ago
Other questions:
  • Explain why the initial value of any function of the form f(x) = a(bx) is equal to a.
    7·1 answer
  • If you have 30 dollars and spend 6.99 how much is left
    5·1 answer
  • PLEASE HELP ASAP! IF YOU KNOW..OH AND FOLLOW AND LIKE M MUSICAL.LYS(APP) IF U HAVE ONE! (@badgalsoundshots)!!!!
    12·1 answer
  • Complete the steps in solving the quadratic function 7x – 9 = 7x2 – 49x by completing the square
    11·1 answer
  • Which table shows a proportional relationship between miles traveled and gas used?
    5·2 answers
  • Find the value of n if
    15·2 answers
  • -3 &lt; 4x -7 &lt; 4<br> NEED HELP ASAP!!
    5·1 answer
  • elena gives the following sequence of transformations to show that the two figures are similar by transforming ABCD into EFGD​
    8·2 answers
  • A dining set is priced at $785. If the sales tax is 9 percent, what is the cost to purchase the dining set? Round to the nearest
    12·1 answer
  • A triangular prism. The triangular base has a base of 7. 8 centimeters and height of 4 centimeters. The prism has a height of 9
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!