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4 years ago

I need 3 and 4 please help.

Mathematics

1 answer:

Lilit [14]4 years ago

5 0

Answer:

$16,242.63

Step-by-step explanation:

What I did was I multiplied the original price of the car which was $32,000 by 12% 4 times and each time I would get the answer I would minus it to the price. So heres an example: 32,000*12%=3,840, 32,000-3,840=28,160. 28,160*12=3,379.20, 28,160-3,379.20=24,780.80. And you keep going 2 more times until you get to 4 then after the 4th one you will do 8% twice and you will get $16,242.63.

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PLZ ANSWER GUYS. The sum of 3 consecutive odd numbers is 39. What is the smallest of these numbers? Write an equation for for th

amid [387]

Answer:

The three integers are

11, 13, and 15.

Step-by-step explanation:

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3 years ago

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vivado [14]

1. $x^2+y^2=28$ and x+y=6

2. x^2+y^2 and x+y remind us of the formula: $(x+y)^{2}= x^2+y^2+2xy$

substituting we get:

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3 Let's solve the system of equations i)x+y=6 and ii)xy=4

substitute y=4/x in (i):

$x+ \frac{4}{x} =6$

multiply all sides by x:

$x^{2} +4=6x$

$x^{2} -6x+4=0$

complete the square:

$x^{2} -6x+4=x^{2} -2*3x+9-9+4= (x-3)^{2}-5=0$

$x-3=\sqrt{5}$ or $x-3=-\sqrt{5}$

$x=3+\sqrt{5}$ or $x=3-\sqrt{5}$

so from x+y=6, y=6-x

case 1, $x=3+\sqrt{5}$ gives $y=3-\sqrt{5}$

case 2, $x=3-\sqrt{5}$ gives $y=3+\sqrt{5}$

Answer:

$(3-\sqrt{5}, 3+\sqrt{5})$ , $(3+\sqrt{5}, 3-\sqrt{5})$

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3 years ago