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UkoKoshka [18]
3 years ago
11

Cuanto da √(1 ÷ 6^2 - 1 ÷ 10^2)

Mathematics
1 answer:
Zepler [3.9K]3 years ago
3 0

Answer:

<u>It</u><u> </u><u>is</u><u> </u><u>2</u><u>/</u><u>1</u><u>5</u>

Step-by-step explanation:

= \sqrt{ \frac{1}{ {6}^{2} }  -  \frac{1}{ {10}^{2} } }  \\ \\   =  \sqrt{ \frac{4}{225} }  \\  \\  =  \frac{ \sqrt{4} }{ \sqrt{225} }  \\  \\  =  \frac{2}{15}

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The correct option is D, A bigger down payment is money paid toward principal, interest-free, which also decreases the amount paid monthly.

<h3>What is interest?</h3>

The amount of money a lender or financial organization earns for lending out money is known as interest.

We know that monthly payments include the interest on the principal amount that is not been paid during the purchase of an item, if the down payment is more than the principal amount that the customer does not pay will decrease which will decrease the loan amount, thus, the interest on the principal amount will decrease as well.

Now, as the interest and the principal amount have both is been reduced, therefore, the monthly instalment(monthly payment) will be reduced as well.

Hence, the correct option is D, A bigger down payment is money paid toward principal, interest-free, which also decreases the amount paid monthly.

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brainly.com/question/2793278

3 0
2 years ago
Find the constant of variation k for the inverse variation. Then write an equation for the inverse variation. y = 2.5 when x = 9
Ahat [919]
1. k = 2<span>2.5</span><span>
2. xy=k
  

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7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST <br><br> what is the domain of (f/g) (x)?
tatyana61 [14]

Given that f(x) = \sqrt{7-x} and g(x) = \sqrt{x + 2}, we can say the following:

\Bigg(\dfrac{f}{g}\Bigg)(x) = \dfrac{f (x)}{g(x)} = \dfrac{\sqrt{7 - x}}{\sqrt{x+2}}


Now, remember what happens if we have a negative square root: it becomes an imaginary number. We don't want this, so we want to make sure whatever is under a square root is greater than 0 (given we are talking about real numbers only).


Thus, let's set what is under both square roots to be greater than 0:

\sqrt{7 - x} \Rightarrow 7 - x \geq 0 \Rightarrow x \leq 7

\sqrt{x + 2} \Rightarrow x + 2 \geq 0 \Rightarrow x \geq -2


Since both of the square roots are in the same function, we want to take the union of the domains of the individual square roots to find the domain of the overall function.

x \leq 7 \,\,\cup x \geq -2 = \boxed{-2 \leq x \leq 7}


Now, let's look back at the function entirely, which is:

\Bigg( \dfrac{f}{g} \Bigg)(x) = \dfrac{\sqrt{7 - x}}{\sqrt{x+2}}

Since \sqrt{x + 2} is on the bottom of the fraction, we must say that \sqrt{x + 2} \neq 0, since the denominator can't equal 0. Thus, we must exclude \sqrt{x + 2} = 0 \Rightarrow x + 2 = 0 \Rightarrow x = -2 from the domain.


Thus, our answer is Choice C, or \boxed{ \{ x | -2 < x \leq 7 \}}.


<em>If you are wondering why the choices begin with the x | symbol, it is because this is a way of representing that x lies within a particular set.</em>

6 0
3 years ago
Find the value of this expression if x = -9.<br> x2 + 3<br> x +6
iren [92.7K]

Answer:

Step-by-step explanation:

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7 0
3 years ago
Write an equation of the line that passes through (1,2) and is parallel to the line y = -5x +4
STatiana [176]

Answer:

y=-5x+7

Step-by-step explanation:

Prallel lines have the same slope

so the slope of  the unknown line is -5

and passes through(1,2)

y-2=-5(x-1)

slope-intercept form:y=-5x+7

6 0
3 years ago
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