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3 years ago

13

Vivian exchanged her Japanese yen for ?56.92 in U.S. dollars. What equation can be used to find the quantity of Japanese yen tha

t Vivian exchanged? ( one Japanese yen is 0.0093 U.S. dollars)

1 answer:

Lilit [14]3 years ago

5 0

That is 6120.43 yen rounded to the nearest hundredth because if you exchange 56.92 at a rate of 1 yen is equal to 0.0093 you get 6120.43.

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11798 (the price) + 11796 x 0.08 (8% interest)=12742.84

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2 years ago

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What value of k will result in the quadratic having one rational solution if 4x2+kx+4=0?

PtichkaEL [24]

The value of 'k' in the quadratic Equation $4x^{2}+kx+4=0$ having one rational solution is k is 8.

<h3>What is a Quadratic Equation?</h3>

Quadratic equations are the polynomial equations of degree 2 in one variable of the type $f(x) = ax^{2} + bx + c = 0$ where a, b, c, ∈ R and a ≠ 0.
The standard form of a quadratic equation is $ax^{2} + bx + c = 0$ .

Here, the given equation is $4x^{2}+kx+4=0$

By comparing the given equation with the standard form of the quadratic equation we get,

a = 4

b = k

c = 4

The given quadratic is having one rational solution, which means $b^{2} -4ac=0$

Therefore,

$k^{2} -4 \times 4\times4=0\\k^{2} -64=0\\k^{2} =64\\k=\sqrt{64} \\k=8$

Therefore, the value of k is 8.

Learn more about the quadratic equation is brainly.com/question/8649555

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7 0

2 years ago

Rachel withdraws $18 from the bank account once each day for six days. What integer represents the change in the amount in the

Margarita [4]

Answer:

-108

108

Step-by-step explanation:

Since it is withdrawing, we are taking away -$18 every day for 6 days.

(-18)*6 = -108

Since it is deposits, we are adding to the amount in her account, +$18 for 6 days.

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The difference is that one is taking away and one is adding each day, resulting in negative or positive change.

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3 years ago

Please help I don’t get this at all

igor_vitrenko [27]

Answer:

11.82 kilometers in Luis's journey in total

Step-by-step explanation:

As per the statement:

To visit his grandmother

Distance Luis takes a train 6.37 kilometers

Distance Luis takes a car 5.45 kilometers.

We have to find the total distance.

$\text{Total distance} = \text{distance by train}+\text{distance by car}$

Substitute the given values we have;

$\text{Total distance Lui's journey} = 6.37+5.45 = 11.82$ km

Therefore, 11.82 kilometers in Luis's journey in total

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3 years ago