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xeze [42]
3 years ago
10

What is the following sum? 4 sqrt 5 + 2 sqrt 5

Mathematics
2 answers:
Leya [2.2K]3 years ago
8 0
The rule is a \sqrt{b}+c \sqrt{b}=(a+c) \sqrt{b}, so

4 \sqrt{5}+2 \sqrt{5}  = 6 \sqrt{5}
77julia77 [94]3 years ago
6 0

Answer:

6\sqrt{5}

Step-by-step explanation:

sum of 4 sqrt 5 + 2 sqrt 5

4\sqrt{5} + 2\sqrt{5}

Both terms have same square root(5)

So they are like terms.

When they are like terms, we add the number outside the square root.

Square root remains the same.

a\sqrt{x} + b\sqrt{x}=(a+b)\sqrt{x}

4\sqrt{5} + 2\sqrt{5}=(4+2)\sqrt{5}=6\sqrt{5}

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Whoever answers these 6 area of composite shapes will get brainliest.
german

Answer:

  1. <u>80 mi²</u>
  2. <u>63 in²</u>
  3. <u>32 m²</u>
  4. <u>44 cm²</u>
  5. <u>59.5 ft²</u>
  6. <u>48 km²</u>

Step-by-step explanation:

<u>Q1</u>

  • 8 x 4 + 12 x 4
  • 32 + 48
  • <u>80 mi²</u>

<u>Q2</u>

  • 5 x 3 + 12 x 4
  • 15 + 48
  • <u>63 in²</u>

<u>Q3</u>

  • 4 x 2 + 8 x 3
  • 8 + 24
  • <u>32 m²</u>

<u>Q4</u>

  • 10 x 4 + 2 x 2
  • 40 + 4
  • <u>44 cm²</u>

<u>Q5</u>

  • 5 x 2 + 11 x 4.5
  • 10 + 49.5
  • <u>59.5 ft²</u>

<u>Q6</u>

  • 3 x 1 + 9 x 5
  • 3 + 45
  • <u>48 km²</u>
5 0
1 year ago
The graphs below have the same shape. What is the equation of the blue<br>graph?​
Semenov [28]

Answer:

the answer is d

Step-by-step explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

vertex- (5,0)

focus- (5,1/4)

axis of symmetry-  x=5

directrix- y=-1/4

ps. can u mark me brainliest if i get this aswer right plz????

thank u!!!!

5 0
2 years ago
Can you please help me get this done it’s due TOMORROW!
siniylev [52]

Answer:

Hi  , the answer is 280-140/ 4-2 = 140/2  

y = 2/140 x

b .  70 beats each minute

Step-by-step explanation:  

we will  take a 2 point from the graph

(280,4) , (y1,x1)    and (140, 2) , (y2,x2)      each point represent a (y,x)  point

m = y1-y2 / x1-x2   = 280-140 / 4-2 = 140 /2

now , y/x = 140/2 ... by B. Multiplication we will get y = 2/140 x  

b .

from the graph we see that every minute  the curve increase 70 beats

Thanks

8 0
2 years ago
The latest online craze is a new game, Khan on Seven. You get 100 points for playing the game. In addition, you get 50 points fo
Blizzard [7]

Answer: 50x+100\geq18,000

Step-by-step explanation:

Let w denotes a seven letter word which Sal will need to make to break the record.

Since  you get 50 points for each seven-letter and 100 points for playing the game.

Then the total points earned by you by making w seven letters words will be:

50x+100

Since, Sal wants to break that record, and needs 18,000 points or more to do so.

Then , the required inequality will be :

50x+100\geq18,000

3 0
3 years ago
Read 2 more answers
Please help! I will give 5 star rating and brainlest ! To anyone that helps with this question
kiruha [24]

Answer:

wat is the question?

Step-by-step explanation:

5 0
3 years ago
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