3 years ago

Solve the equation. 7x2 – 34x - 5=0

Mathematics

1 answer:

Taya2010 [7]3 years ago

5 0

Answer: x = -1/7 = -0.143

x = 5

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A ladder is 12 metres long . It leans against a wall with one end on the ground 7 metres from the wall. The other end just reach

MissTica

Answer:

window sill height =9.75 meters

Step-by-step explanation:

Ladder^2=height^2+length^2

12^2=height^2+7^2

144=height^2+49

height^2=144-49=95

height=9.75

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3 years ago

Find the mean and the median of this data set: 8, 6, 6, 3, 72, 7, 4, 2

icang [17]

Answer:

median: 6 ; mean: 13.5

Step-by-step explanation:

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3 years ago

What are the solutions of 3x^2-x+4=0

guajiro [1.7K]

3x² -x+4=0

We can use quadratic formula
a=3, b= -1, c=4
$x= \frac{-b+/- \sqrt{b^{2}-4ac} }{2a} 
\\ \\ x= \frac{1+/- \sqrt{1-4*3*4} }{2*3} 
\\ \\ x = \frac{1+/- \sqrt{-47} }{6} 

This equation does not have real roots, it has only 2 imaginary roots.$

$x= \frac{1+ \sqrt{47}i }{6} 
\\ \\ x= \frac{1- \sqrt{47}i }{6}$

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3 years ago

A number is greater than 8. The same number is less than 10. The inequalities x greater-than 8 and x less-than 10 represent the

Svet_ta [14]

Answer:

The math problem is easy its 8.5,9.5

Step-by-step explanation:

I know this because i am good at math

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2 years ago

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Step-by-step explanation:

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