3 years ago

40% of what number is 18?

Mathematics

2 answers:

kenny6666 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

vladimir1956 [14]3 years ago

3 0

Answer:

40 percent (calculated percentage %) of what number equals 18? Answer: 45.

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Given the function defined in the table below find the average rate of change

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2 years ago

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dem82 [27]

Answer:

x = 46°

Step-by-step explanation:

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2 years ago

Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x

Lynna [10]

ANSWER

1.39

EXPLANATION

The given quadratic equation is

$0 = 2 {x}^{2} + 3x - 8$

This is the same as,

$2 {x}^{2} + 3x - 8 = 0$

Comparing to

$a {x}^{2} + bx + c = 0$

We have

a=2, b=3,c=-8

Using the quadratic formula, the solution is given by:

$x = \frac{ - b \pm \: \sqrt{ {b}^{2} - 4ac} }{2a}$

We substitute the values to get,

$x = \frac{ - 3\pm \: \sqrt{ {3}^{2} - 4(2)( - 8)} }{2(2)}$

$x = \frac{ - 3\pm \: \sqrt{ 73} }{4}$

The positive root is

$x = \frac{ - 3 + \: \sqrt{ 73} }{4} = 1.39$

to the nearest hundredth.

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3 years ago

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lbvjy [14]

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Step-by-step explanation:A p E x verified

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2 years ago