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Morgarella [4.7K]
4 years ago
13

What are the solutions to the equation √x2+2x-10=√x+20

Mathematics
1 answer:
Marianna [84]4 years ago
5 0
<span>√x^2+2x-10=√x+20
 raising both members to the square
</span> x^2+2x-10=x+20
 rewriting
 x^2+x-30=0
 factoring
 (x+6)(x-5)=0
 therefore the solutions are
<span> x = –6, x = 5
</span>the answer is 
<span>B. x = –6, x = 5</span>
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Given that f(x) =<br> X + 3<br> 2 <br> a) Find f(2)<br> b) Find f'(x)<br> c) Find f"(12)
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Answer:

Step-by-step explanation:

Unclear.  Did you mean f(x) = 2^(x + 3)?  If so, the parentheses are mandatory.

Assuming that f(x) = 2^(x + 3) is correct, then:

a) f(2) = 2^(2 + 3) = 2^5 = 32

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c) f"(x) = 2^(x + 3) (same as in (b)), so that:

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3 years ago
A quadrilateral has three angles that measure 90º, 80º, and 74º.
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I did the math and <span>x=116</span>
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3 years ago
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Lubov Fominskaja [6]

Answer:

a) 2nd container is more efficient and contains the elements for a container.

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b) A cylinder is a geometric solid common in everyday life.  Examples of a cylinder are soup cans, food tins, drink cans, candles, toilet paper rolls, cups, aerosol cans, flower vases, test tubes, fire extinguishers, plant containers, salt shakers and pencil holders.  The two ends are called bases, and are usually circular.  Though, they can take other shapes.  When a cylinder is unrolled and flattened out, the side is actually a rectangle.

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6 0
4 years ago
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6 0
3 years ago
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Which function has a domain of {all real values of x : x does not equal 1)? **Hint: Graph the function and look for an asymptote
nikitadnepr [17]
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(Just a side rant, the reason none of them are technically correct is because x cannot equal -1 either… just some bonus points you could redeem with your teacher if you feel like it)
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3 years ago
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