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arlik [135]
3 years ago
10

$15 mug marked up 20%

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
7 0

Answer:

18 dollars

Step-by-step explanation:

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3 years ago
What is 298366366×874652882÷727+66377277×863663761-76544
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Answer:

5.7686613e+16

Step-by-step explanation:

Use PEMDAS, or the orders of operations, to solve this question.

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4 years ago
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3 years ago
Which equation has exactly two real and two non real solutions?
tatiyna

Answer:

The first option x^4-21x^2-100=0.

Step-by-step explanation:

To have exactly 2 real and two non real solutions, the degree of the polynomial must be a degree 4. Degree is the highest exponent value in the polynomial and is also the number of solutions to the polynomial. This polynomial ha 2 real+2 non real= 4 solutions and must be x^4. This eliminates the bottom two solutions.

In order to have two real and two non real solutions, the polynomial must factor. If it factors all the way like

x^4-100x^2=0\\x^2(x^2-100)=0\\x^2(x-10)(x+10)=0\\\\x^2=0\\x-10=0\\x+10=0

This means x=0, 10, -10 are real solutions to the polynomial. It has no non real solutions. This eliminates this answer choice.

Only answer choice 1 meets the requirement.

5 0
4 years ago
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V289<br> Rational<br> Irrational
Diano4ka-milaya [45]
Answer: Irrational

Explanation: bc it is
8 0
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