3 years ago

Please help. 25 points for answer

Mathematics

1 answer:

MAVERICK [17]3 years ago

3 0

I think the x is 19 I'm not really sure tho but it might be 19

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Pls help me 10 points

deff fn [24]

Hello there,
5 up right 2
5/2x

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3 years ago

47,34,29,37,22,25,36,39,42,45<br> Find the range of the marks of the students.

Gnesinka [82]

Range = biggest result - smallest
Range= 47-22= 25

(Mark me the brainliest if this has helped!)

8 0

2 years ago

Consider the quadratic equation x squared = 4x - 5. how many solutions does the equation have?

snow_lady [41]

Answer:

The quadratic equation has two complex solutions

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}=4x-5$

Equate to cero

$x^{2}-4x+5=0$

$a=1\\b=-4\\c=5$

substitute in the formula

$x=\frac{4(+/-)\sqrt{-4^{2}-4(1)(5)}} {2(1)}$

$x=\frac{4(+/-)\sqrt{16-20}} {2}$

$x=\frac{4(+/-)\sqrt{-4}} {2}$

Remember that

$i^{2}=-1$

$x=\frac{4(+/-)2i} {2}$

$x=2(+/-)i$

therefore

The quadratic equation has two complex solutions

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3 years ago

PLEASE ANSWER ASAP ITS EASY <br> 71/2 divided by 3/4

zalisa [80]

142/3 is the answer
Which is also equal to 47 1/3

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Suppose the income tax rate is 6%. Determine the amount of money remaining after paying income tax on

liq [111]

Answer:

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Step-by-step explanation:

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