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2 years ago

ALGUIEN QUE ME AYUDE A COMPLETAR LOS CUADRADOS

Mathematics

1 answer:

g100num [7]2 years ago

8 0

The answer is fjfjfj

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Jodi traded $3400 for Chinese yuan, immediately changed her mind, and then

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Which expressions are equivalent to 3x + 2(x − 1) − 4?

alina1380 [7]

5x-6 is equivalent. This is because 2 (x-1) becomes 2x-2, which makes the expression 3x+2x-2-4, which when put all together becomes 5x-6.

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Help please!! 30 Pts!!

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Determine the zeroes of 10x2−5=35

OLEGan [10]

Answer:

x = +2, x = -2

Step-by-step explanation:

The equation to solve in this problem is

$10x^2-5=35$

The first step we do is to subtract 35 on both sides of the equation, so we get:

$10x^2-5-35=0\\10x^2-40=0$

Now we simplify the equation by dividing both terms by 10:

$\frac{10x^2-40}{10}=0\\x^2-4=0$

Now we observe that the term on the left is the difference between two squares, so it can be rewritten using the property:

$a^2-b^2=(a+b)(a-b)$

Where here,

a = x

b = 2

So we can rewrite the equation as:

$x^2-4=0\\(x+2)(x-2)=0$

And this equation is zero when either one of the two factors is zero, so the two solutions are:

$x+2=0\rightarrow x=-2\\x-2=0 \rightarrow x=+2$

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2 years ago

About one-fifth of the population of a town has blue eyes. About two-sevenths of the population has brown eyes. What is the prob

mihalych1998 [28]

Answer:

Option C, 1/35

Step-by-step explanation:

Given

Proportion of town that has blue eyes = 1/5 = 0.2

Proportion of town that has brown eyes = 1/7

The probability of choosing either a blue eye or a brown eye person is

Probability of blue eye individual * Probability of brown eye individual

= 1/5 * 1/7 = 1/35

Hence, option C is correct

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2 years ago