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Sliva [168]
3 years ago
6

What is the sum of the roots of the equation 2 x^2 + 5 x − 3 = 0?

Mathematics
1 answer:
Dima020 [189]3 years ago
4 0

Answer:

B) -2.5

Step-by-step explanation:

2x^2 + 5x -3 = 0

(2x - 1)(x + 3) = 0

2x - 1 = 0; 2x = 1, so x = 1/2 = ROOT 1

x + 3 = 0, so x = -3 = ROOT 2

Now add the roots: -3 + 1/2 = - 2 1/2, so the answer is B.

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Simplify the equation in simplest for using only positive exponents: (16x^4y^-12)^-5/2?
Lapatulllka [165]

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Step-by-step explanation:

That is the answer if the equation looks like this:(16x^4y^{-12} )^\frac{-5}{2}

7 0
3 years ago
(0.04)^3/2. .......<br>........<br><br>​
zhannawk [14.2K]

Answer:

Step-by-step explanation:

hello :

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4 0
3 years ago
Need help!!!! asap. ​
frez [133]

Answer:

D

Step-by-step explanation:

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7 0
3 years ago
Which is larger?<br> 7% or 0.7 and explain how you know.
disa [49]
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7 0
3 years ago
Read 2 more answers
Tammy conducted a survey to find the favorite subject of the students at her school. She asked 25 students from her math class w
almond37 [142]
Tammy's sample may not be considered valid because, on the first hand, it is said that she only asked students from her " Math Class". 
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Illustrating her survey through statistics may be more reliable and valid because it shows frequencies in which she can calculate easily and accurately the percentage of  the number of students per subject, in a more objective manner.
7 0
3 years ago
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