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Andre45 [30]
3 years ago
11

Find the sum and the product of the roots of the equation: x^2−37x+27=0

Mathematics
1 answer:
lawyer [7]3 years ago
6 0

Answer:

Sum of the Roots = 37

Product of the Roots = 27

Step-by-step explanation:

Here, the given expression is  x^{2}  - 37x + 27 = 0

Now the general Quadratic Equation is of the form:

ax^{2}  + bx + c = 0

Here, Sum of the Roots = -(\frac{b}{a} )

and the Product of the Roots =  (\frac{c}{a} )

So, comparing the general equation with the given equation, we get:

a = 1, b = -37 and c = 27

So, Sum of the Roots = -(\frac{-37}{1} )  =  37

and the Product of the Roots =  (\frac{27}{1} ) = 27

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A survey is made to determine the number of households having electric appliances in a certain city. It is found that 75% have r
Mashcka [7]

Answer:

The probability that a household has at least one of these appliances is 0.95

Step-by-step explanation:

Percentage of households having radios P(R) = 75% = 0.75

Percentage of households having electric irons P(I) = 65% = 0.65

Percentage of households having electric toasters P(T) = 55% = 0.55

Percentage of household having iron and radio P(I∩R) = 50% = 0.5

Percentage of household having radios and toasters P(R∩T) = 40% = 0.40

Percentage of household having iron and toasters P(I∩T) = 30% = 0.30

Percentage of household having all three P(I∩R∩T) = 20% = 0.20

Probability of households having at least one of the appliance can be calculated using the rule:

P(at least one of the three) = P(R) +P(I) + P(T) - P(I∩R) - P(R∩T) - P(I∩T) + P(I∩R∩T)

P(at least one of the three)=0.75 + 0.65 + 0.55 - 0.50 - 0.40 - 0.30 + 0.20  P(at least one of the three) = 0.95

The probability that a household has at least one of these appliances is 0.95

3 0
2 years ago
What is the mixed number for 45/5
wariber [46]
45/5 simplifies to 9/1 so the answer would just be 9
8 0
3 years ago
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What is the quotient of 13 divided by 8
Masteriza [31]
1.625 or/and 13/8 should be your answer
8 0
2 years ago
Solve the equation and enter the value of x below.<br> X-(-8) = -13<br> X =
Natali [406]
X=-21. Hope this helps
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3 years ago
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Taylor has $20 to spend on school supplies. A pack of
mariarad [96]

Answer:

7 packs

Step-by-step explanation:

2.75p < 20

Divide both sides by 2.75

2.75p/2.75 < 20/2.76

Simplify

p = 7.27 (27 repeating)

Round

p = 7

6 0
3 years ago
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