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Shkiper50 [21]
3 years ago
6

Simplify the equation 28 - 6n + 7(2n -8)-3n

Mathematics
2 answers:
Flauer [41]3 years ago
6 0

Answer:

5n-28

Step-by-step explanation:

28-6n+7(2n-8)-3n

28-6n+14n-56-3n

28+8n-56-3n

28-56+8n-3n

-28+5n

5n-28

BaLLatris [955]3 years ago
4 0
Answer: 5n - 28

first, distribute 7 to (2n-8), which would be 14n - 56

rewrite to have all common terms next to each other, which would be:

-6n + 14n - 3n + 28 - 56

combine all like terms.

5n - 28
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If 1 euro is priced at $1.25 and if 1 euro will also buy 88 Japanese yen (€1 = ¥88), in equilibrium, with no arbitrage opportuni
Alborosie

Answer:

So the exchange rate is that each dollar is worth 70.4 yens.

Step-by-step explanation:

We have that:

1 euro is priced at $1.25

1 euro will also buy 88 Japanese yen

This also means that:

$1.25 is priced at 88 Japanese yen

How much is the cross rate between the yen and the dollar (yen per dollar exchange rate)?

How much yens is 1 dollar?

This can be solved by a simple rule of three.

$1.25 - 88 yen

$1 - x yen

1.25x = 88

x = \frac{88}{1.25}

x = 70.4

So the exchange rate is that each dollar is worth 70.4 yens.

5 0
3 years ago
Select the best answer. About how much will a $459.95 LCD TV cost including the sales tax of 8.25%?
erma4kov [3.2K]
I used the Old Change New method and I crossed multiplied.
The answer is about $498 (I rounded $497.895875)
Check: $498>459.95 by 8.25%

5 0
3 years ago
A curve is traced by a point p(x,y) which moves such that its distance from the point a(-1,1) is three times its distance from t
Gre4nikov [31]
Refer to the figure shown below.

The point c, on line segment ab, is in a 3:1 ratio from a.
Therefore,
the x-coordinate of c is -1 +(3/4)*(3) = 5/4 = 1.25.
the y-coordinate of c is 1 - (3/4)*(2) = -1/2 = -0.5.

At point p(x,y), we want d1 = 3d₂, or d₁² = 9d₂².
Therefore
(x + 1)² + (y - 1)² = 9[(x - 2)² + (y + 1)²]
x² + 2x + 1 + y² - 2y + 1 = 9x² - 36x + 36 + 9y² + 18y + 9
8x² - 38x + 8y² + 20y + 43 = 0
x² - 4.75x + y² + 2.5y + 5.375 = 0
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This is a circle with center at (2.375, -1.25) and radius 1.352.

Answer:
(x - 2.375)² + (y +1.25)² = 1.828

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4 years ago
42 birthday cakes in 777 days How many birthday cakes can Mark make in 555 days?
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Answer:

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Step-by-step explanation:

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