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Anna007 [38]
4 years ago
10

Help me please Surds

Mathematics
1 answer:
kodGreya [7K]4 years ago
7 0

Answer:

12\sqrt{6} + 8\sqrt{15} + 12 + 4\sqrt{10}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Given

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

Each term in the second factor is multiplied by each term in the first factor, that is

4\sqrt{3} (3\sqrt{2} + 2\sqrt{5} ) + 2\sqrt{2} (3\sqrt{2} + 2\sqrt{5} ) ← distribute both parenthesis

= 12\sqrt{6} + 8\sqrt{15} + 12 + 4\sqrt{10}

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Given the cost function Upper C (x )and the revenue function Upper R (x )​, find the number of units x that must be sold to brea
Mariulka [41]

Answer:

18,000 units .

Step-by-step explanation:

The cost function C(x) and the revenue function R(x) are, respectively:

C(x) = 14x +72,000\\R(x)= 18x

In order to break even, the revenue function, for a given value of "x" must yield a value equal or greater than the cost function. Simply equal both functions to find a minimum value of x needed to break even:

C(x) = R(x)\\14x +72,000 = 18x\\4x=72,000\\x=18,000

18,000 units must be sold in order to break even.

5 0
4 years ago
Simplify each expression
Amiraneli [1.4K]
1. -4+5x^3-(-3y)^0

-1+-3=-4
3x^2+ 2x^1= 5x^3
9y^1-6y^1=14y^0

2. 2y-(-3x^5)+10

5y-3y=2y
-3x^1+-2x^2=-5x^3
-5x^3+2x^2=-3x^5

3. 3x+3y+8

4x^2+2x=6x^3
6x^3-3x^2=3x
7y-2y=4y
4y-y=3y
-5+(-3)=8

4. 6x^3+4y+2

3x^2+3x^1=6x^3
7y-2y=5y
5y-y=4y

I hope this helped
3 0
3 years ago
How much greater, in square inches, is the area of a circle of radius 20 inches than a circle of diameter 20 inches? Express you
r-ruslan [8.4K]

Answer:

  300π in²

Step-by-step explanation:

The circle with diameter 20 inches has a radius of 10 inches, so an area of ...

  A = πr² = π(10 in)² = 100π in²

The circle with a radius of 20 inches has an area of ...

  A = πr² = π(20 in)² = 400π in²

The larger circle is larger by ...

  (400π in²) -(100π in²) = 300π in²

8 0
4 years ago
Solve: 8 – 2x = 2<br> x=<br><br> And how?
TiliK225 [7]

Answer:

x = 3

Step-by-step explanation:

8 - 2x = 2

- 2x = 2 - 8

- 2x = - 6

- x = - 6/2

- x = - 3

x = 3

5 0
4 years ago
Read 2 more answers
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KonstantinChe [14]

Answer:A

Step-by-step explanation:A

6 0
4 years ago
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