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Scrat [10]
3 years ago
9

Simplify( (-4/5)^-2)^2

Mathematics
1 answer:
arsen [322]3 years ago
4 0
( (-⁴/₅)-² )²

=
( (⁵/₄)² )²

= ( (5²/4²) )²

= (²⁵/₁₆)²

25²
-------
16²

=
625
------- = 2.44141
256
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QUADRATIC FORMULA SIMPLIFIED PLZ HELP
olga2289 [7]

Answer:

  • 3x² + 5x + 1 = 0 simplified
  • x = (-5 ± \sqrt{13})/6 roots

Step-by-step explanation:

<u>Given quadratic formula</u>

  • 3x² + 5x - 5 = - 6

<u>Standard form</u>

  • ax² + bx + c = 0

<u>Simplifying</u>

  • 3x² + 5x - 5 + 6 = 0
  • 3x² + 5x + 1 = 0

<u>Solving</u>

  • x = (-5 ± \sqrt{5^2 -4*3*1})/(2*3)
  • x = (-5 ± \sqrt{13})/6
6 0
3 years ago
The graph of a proportional relationship contains the point (20, 4).
soldier1979 [14.2K]

Answer:

y=\frac{1}{5}x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem we have

point (20,4)

Substitute the values and solve for k

k=y/x

k=\frac{4}{20} =\frac{1}{5}

therefore

the equation of the line is equal to

y=\frac{1}{5}x


6 0
3 years ago
Read 2 more answers
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dexar [7]
She used 278.4 minutes
5 0
3 years ago
7.6375 correct to 2 decimal place
Reil [10]
I got 7.64 because you round the 3 to 4 since the 7, in the 3rd decimal place is higher than 5
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Naya [18.7K]

Answer:

-10/7

Step-by-step explanation:

(-5/7)/(2/4) = (-5/7)/(1/2) = (-5/7)*(2/1) = -10/7

3 0
3 years ago
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