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
Gennadij [26K]
3 years ago
7

Simplify the expression 2√ 20 − 3√ 7 − 2√ 5 + 4√ 63 .

Mathematics
2 answers:
earnstyle [38]3 years ago
8 0

Answer:

The simplified form is,

\boxed{\boxed{6\sqrt{5}+9\sqrt{7}}}

Step-by-step explanation:

The given expression is,

=2\sqrt{20}-3\sqrt{7}+2\sqrt{5}+4\sqrt{63}

=2\sqrt{4\times 5}-3\sqrt{7}+2\sqrt{5}+4\sqrt{9\times 7}

=2(\sqrt{4}\times \sqrt{5})-3\sqrt{7}+2\sqrt{5}+4(\sqrt{9}\times \sqrt{7})

=2(2\times \sqrt{5})-3\sqrt{7}+2\sqrt{5}+4(3\times \sqrt{7})

=4\sqrt{5}-3\sqrt{7}+2\sqrt{5}+12\sqrt{7}

=4\sqrt{5}+2\sqrt{5}+12\sqrt{7}-3\sqrt{7}

=6\sqrt{5}+9\sqrt{7}

Tema [17]3 years ago
5 0
The simplified expression is 2sqrt(5)+9sqrt(7)
You might be interested in
I need help on 2,5 10-12,29 please anyone !!
AfilCa [17]

Answer:

2:1/2

5:16/24

10:Movie B

11:Movie D

12:2/3

I can't see 29. If you show it, then i will solve it.

Step-by-step explanation:

3 0
3 years ago
Elaina is planning to save enough money to buy laptop computer. She needs $600. She already has $200 in her bank account. She is
Natali [406]

Answer: 200+40x=600

Step-by-step explanation:

200+40x=600

600-200=400

40x=400

40/40= 1 or x

400/ 40=10

x=10

5 0
3 years ago
A van travels 260 miles on 13 gallons of gas. Find how many gallons the van needs to travel 500 miles?
FinnZ [79.3K]

Answer:

  25 gallons

Step-by-step explanation:

Assuming miles-per-gallon is a constant, the amount of gas is proportional to the miles driven:

  gallons/(500 mi) = (13 gal)/(260 mi)

  gallons = (500 mi)/(260 mi)(13 gal) . . . . multiply by 500 mi

  gallons = 25 gal . . . . do the arithmetic

The van will need 25 gallons of gas to go 500 miles.

6 0
3 years ago
What is the 32nd term of 311, 305, 299
nata0808 [166]

Answer:

503

Step-by-step explanation:

For an arithmetic sequence, the n-th term is found by

a_n = a_1 + (n - 1)d

To find d (the common difference) we can simply subtract one of the terms by the last, for example:

d = 299 - 305 \\d = -6 \\

The common difference must be the same throughout the entire sequence, so we can do it once more just to be sure:

d = 305 - 311\\d = -6

We also have to know that a_1 stands for the first term of the sequence, which in this case is 311.

Now that we know this, let's find the 32nd term

a_{32} = 311 + (32 - 1)-6\\a_{32} = 311 + 192\\a_{32} = 503

Good luck!

4 0
3 years ago
Read 2 more answers
HELP MEE IN MATHHHH pleasee
evablogger [386]

Answer:

44.7

Step-by-step explanation:

I guessed based on what the side looks like so if it's wrong I"m so so sorry

7 0
2 years ago
Other questions:
  • A Chemist has 100g of 25% acid solution. How much of these solution he needs to drain and replace with 70% acid solution to obta
    8·2 answers
  • What is 25/100 in simplest form
    8·1 answer
  • How many times is function f called in the code segment below? 25 points?
    13·1 answer
  • How do you do this !
    5·2 answers
  • Please help me with all problems,, due tommorow :(
    10·1 answer
  • What is a plane figure bounded by four straight line​
    10·1 answer
  • Whats 652-387 <br> Please help im not good at math
    9·2 answers
  • What is the sum of the fractions? Use the number line and equivalent fractions to help find the answer.
    9·2 answers
  • Use the order of operations to simplify this expression.<br> 2 + 4(5 − 8)
    11·1 answer
  • There are only red and blue marbles in a box. The probability of choosing a red marble in
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!