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3 years ago

Select the Ratio that is not equivalent to the rest.

Mathematics

1 answer:

Lena [83]3 years ago

8 0

12:25 is not equivalent to the rest

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Sav [38]

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3 years ago

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X^{2} -81 find the diffrence of squares

Rasek [7]

Answer:

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3 years ago

Factor 16x^2 + 49. Check your work.

Shtirlitz [24]

Answer:

$16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

Step-by-step explanation:

Given : Expression $16x^2+49$

To find : Factor the expression ?

Solution :

The given expression is a quadratic function $y=ax^2+bx+c$ the solution is $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

On comparing with general form,

a=16, b=0, c=49

Substitute in the formula,

$x=\frac{-0\pm\sqrt{0^2-4(16)(49)}}{2(16)}$

$x=\frac{\pm\sqrt{-3136}}{32}$

$x=\frac{\pm56i}{32}$

$x=\frac{56i}{32},\frac{-56i}{32}$

$x=\frac{7i}{4},\frac{-7i}{4}$

Factors are $(x-\frac{7i}{4}),(x+\frac{7i}{4})$

Therefore, $16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

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4 years ago

Which of these terms indicates the exchange of goods and services between countries

kupik [55]

International trade.

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3 years ago

1) ? x (-9) = -36

diamong [38]

Answer:

1. 4

2. 4

3.7

4.-2

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6. -5

7.5

8.24

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3 years ago

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