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
zalisa [80]
3 years ago
7

Rebecca solved

Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0

No.

\sqrt{45}=3\sqrt{5}  \\2\sqrt{20} =2\sqrt5}

If you add them up you DO NOT GET 5\sqrt{5}. According to mathematics, it equals to 7\sqrt{5}.

You might be interested in
Solve for n<br> 3n + 2 - 2n + 5 = 17<br> (Combine like terms then solve.)
elixir [45]

Answer:

n+7=17

n=17-7

n=10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Kendra ordered a set of blue and brown pins. She received 100 pins, and 30% of them were blue. How many blue pins did Kendra rec
natka813 [3]

Answer:

30 blue pins

Step-by-step explanation:

30% is the same as 30 out of 100, so this can be written in this fraction: \frac{30}{100}

now, you should multiply this fraction by the total number of pins she ordered:

100 x \frac{30}{100}

to solve this, you can simplify by dividing 100 by 100, this equals 1

30 times 1 is 30

there are 30 blue pins

8 0
2 years ago
Read 2 more answers
5(-3x - 2) - (x - 3) = -4 (4x +5) + 13
S_A_V [24]
Start off by distributing the numbers into the parentheses:

5(-3x - 2) - (x - 3) = -4(4x + 5) + 13
-15x - 10 - (x - 3) = -16x - 20 + 13

(Note: It's super important to be careful when opening up negative parentheses! -(x-3) is not just - x - 3, it is actually -x + 3 since the negative is distributed in every number!)

-15x - 10 - x + 3 = -16x - 20 + 13
-16x - 7 = -16x - 7
-16x = -16x
0 = 0

There is an infinite number of solutions in this equation.

(When you get 0=0 when solving for a variable, that means that said variable will have infinite solutions, that is, any number plugged into the equation will work)
4 0
3 years ago
Read 2 more answers
How many qt are in a gallon
egoroff_w [7]
4 quarts in a gallon
8 0
3 years ago
Read 2 more answers
The solution set for the equation of a circle is all the_____ on the circle.
zalisa [80]
The answer to your question is ( points ).
5 0
2 years ago
Other questions:
  • What is 5 sqrt (28) + sqrt (63) in simplest radical form?
    7·1 answer
  • PLEASE HELP !
    7·2 answers
  • ALL OF A SUDDEN EVERYONE IS CLUELESS IN GEOMATRY?!?! COME ON!!! I LITERALLY HAVE 12 MINUTES LEFT! HELP ME PLEASE! I AM STRESSED
    13·1 answer
  • The total surface area of a cube is 37.50 square centimetre. Find its volume.​
    15·2 answers
  • * please read directions* i need help i’m very confused!! asap ( 10 points)
    12·1 answer
  • 3 discounts of30% ,35%, and 20% are applied to an item what will be thetotal percent markdown?
    7·1 answer
  • YEAR 9 MATHS
    7·2 answers
  • A rectangle has a length of (5x+2) and a width of (3x-1) with an area of 308 square units. Find the perimeter
    11·1 answer
  • A clothing store advertised a sale of forty percent off all merchandise. How is forty percent written in standard form?
    6·1 answer
  • Write it in standard form
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!