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
Lapatulllka [165]
3 years ago
6

Simplify the surd 3√ 20 +√ 45 ​

Mathematics
2 answers:
vagabundo [1.1K]3 years ago
4 0
9/- 7dndusjjsjddkkdkdksksjdid
melisa1 [442]3 years ago
3 0

Answer:

9\sqrt{5}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Simplify the radicals

\sqrt{20}

= \sqrt{4(5)}

= \sqrt{4} × \sqrt{5}

= 2\sqrt{5}

\sqrt{45}

= \sqrt{9(5)}

= \sqrt{9} × \sqrt{5}

= 3\sqrt{5}

Then

3\sqrt{20} + \sqrt{45}

= 3(2\sqrt{5} ) + 3\sqrt{5}

= 6\sqrt{5} + 3\sqrt{5}

= 9\sqrt{5}

You might be interested in
Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x &lt; 0<br> Is f a probability density function?
Lynna [10]

Yes. f(x) is a PDF if

• f(x) \ge 0 for all x in the support; this is true, since e^{-x}>0 for all x, and multiplying a positive number x doesn't change this fact;

• the integral of f(x) over its support is 1; this is also true, since

\displaystyle \int_{-\infty}^\infty f(x) \, dx = \int_0^\infty xe^{-x} \, dx = 1

which can be computed by parts.

3 0
2 years ago
If one candy bar weighs 3 ounces, what is the weight of 11 candy bars?
Harman [31]

Answer:

C. 2 lb

Step-by-step explanation:

11 x 3 = 33

33 oz = 2.0625 lb or 2 lb

6 0
3 years ago
Read 2 more answers
If x = –5, which number line shows the value of |x|? (1 point)<br><br> Question 16 options:
Eva8 [605]

Answer:

5

Step-by-step explanation:

N/A

6 0
3 years ago
Read 2 more answers
Michelle has 3
anyanavicka [17]

Answer: 4/5

Step-by-step explanation:

3 0
3 years ago
I don't understand how to solve these problems
iragen [17]
When adding fractions you need to get common denominators then you multiply too times bottom and then boom add and there you go
8 0
3 years ago
Read 2 more answers
Other questions:
  • Trevor makes a scale drawing of a doghouse that he is building. The scale he uses is 1 in. :0.4ft. What is the actual area of th
    7·1 answer
  • What is the answer for this??
    11·1 answer
  • Explain why domain restrictions for inverse trigonometric functions are necessary
    5·1 answer
  • Simplify the expression<br> 6x + 2x =
    7·1 answer
  • A company with loud machinery needs to cut its sound intensity to 44% of its original level. By how many decibels would the loud
    14·2 answers
  • Please Help I’ll Give You BrainList and a Heart.
    15·1 answer
  • 18 12/19+ 23 18/19- 15 14/19 simplify with explanation. please help.!
    10·1 answer
  • The table shows the amount of money Justin earns for mowing lawns. Is the relationship proportional? Why or why not?
    14·1 answer
  • Round 7.12568 to the nearest thousandth
    9·2 answers
  • Helpppp plssss anyoneeee
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!