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3 years ago

What is the measurement of x

Mathematics

2 answers:

krek1111 [17]3 years ago

6 0

I think it’s 3.9999.

Nesterboy [21]3 years ago

5 0

The measurement of x is 3.9999

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Which are the solutions of x2 = –5x + 8?

Nostrana [21]

Answer:

As exact answers:

$x=\frac{-5-\sqrt{57} }{2}$ and $x=\frac{-5+\sqrt{57} }{2}$

As decimal answers:

x = -6.2749172 ≈-6.3

x = 1.27491722 ≈ 1.3

Step-by-step explanation:

For quadratic equations, you can use the quadratic formula. Rearrange the equation to standard from, which is ax² + bx + c = 0.

x² = –5x + 8

x² + 5x - 8 = 0

State the values for "a", "b" and "c",

a = 1; b = 5; c = -8

$x=\frac{-b±\sqrt{b^{2}-4ac} }{2a}$ (Ignore the Â, it's a formatting error)

$x=\frac{-5±\sqrt{5^{2}-4(1)(-8)} }{2(1)}$ Simplify

$x=\frac{-5±\sqrt{25-(-32)} }{2}$ Two negatives make a positive

$x=\frac{-5±\sqrt{57} }{2}$

Split the equation at the ± for plus and minus:

$x=\frac{-5+\sqrt{57} }{2}$ = 1.27491722 ≈ 1.3

$x=\frac{-5-\sqrt{57} }{2}$ = -6.2749172 ≈ -6.3

Therefore the solutions are 1.3 and -6.3.

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3 years ago

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Step-by-step explanation:

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4 0

2 years ago

(show ur work) Each bag of gourment popcorn for a school fundraiser costs $6.75. The total amount received from the popcorn sale

Alinara [238K]

Answer:

725 Boxes of Popcorn

Step-by-step explanation:

You can do it simply by just typing in the calculator 4893.75÷6.75.

But I can show my work. Picture below

5 0

2 years ago

PLEASE HELP ME!! Simplify by multiplying the LCD

Umnica [9.8K]

Answer:

x+1/x-1 +1 / x+1/x-1 -1= x

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3 years ago

Ralph likes 25 but not 24;400 but not 300;144 but not 145; does he like 10,50,124,200, or 1600

Likurg_2 [28]

25, 400 and 144 are all square numbers and 24, 300 and 145 are not.

Therefore, he must like 1600

4 0

3 years ago