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3 years ago

Jane buys a coat that is $18 off the orinigal price. This is a 30% discount. What is the original price of the coat?

1 answer:

6 0

Total cost - (total cost * 30%) = discounted price
$C - .3C = 18 \\ 
.7C =18 \\
C = \frac{18}{ \frac{7}{10}}\\
C=\frac{180}{7}\\
C= 25.7142857...$

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Write an equation to model growth or decay in the following scenario. A stock is declining at a rate of 25% of its value every 2

yawa3891 [41]

The exponential function that models this situation is:

$y(t) = 225(0.75)^{\frac{t}{2}}$

------------------------------------------

A decaying exponential function has the following format:

$y(t) = y(0)(1 - r)^t$

In which:

y(0) is the initial value.
r is the decay rate, as a decimal.

In this problem:

The stock started at $225, thus $y(0) = 225$ .
Declines at a rate of 25% every 2 weeks, thus $r = 0.25, t = \frac{t}{2}$

The equation is:

$y(t) = y(0)(1 - r)^t$

$y(t) = 225(1 - 0.25)^{\frac{t}{2}}$

$y(t) = 225(0.75)^{\frac{t}{2}}$

A similar problem is given at brainly.com/question/24282972

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2 years ago

1• (a + 3) = a + 3<br> What is the property

Artist 52 [7]

Answer:

the commutative property because you’re not changing the way its form style, but of more like their former

6 0

3 years ago

Omar has 3 1/14 cups of dough to make dumplings.If he uses 3/16 cup of dough for each dumpling,how many whole dumplings can Omar

Bumek [7]

Answer:

Omar can make 16 dumplings with some dough to spare

Step-by-step explanation:

you should convert each value to have the same denominator to make the equation easier

3 and 1/14 cups is the same as 43/14 cups of dough

so the total 43/14 needs to be divided by 3/16

43/14 divided by 3/16 = 43/14 * 16/3

=688/42 = 16.3809...

so Omar can make 16 dumplings with some dough to spare

6 0

3 years ago

fourth,sixth and thirteenth term in this sequence A(n)= 6+(n+1)(-2) help me to find and describe the explicite formula

OleMash [197]

Hello,

A(n)=6+(n+1)^(-2)=6+1/(n+1)²

$A_{4} =6+ \dfrac{1}{(4+1)^2} =6+ \dfrac{1}{25}= \dfrac{151}{25} \\

 A_{6} =6+ \dfrac{1}{(6+1)^2} =6+ \dfrac{1}{49}= \dfrac{295}{49} \\

 A_{13} =6+ \dfrac{1}{(13+1)^2} =6+ \dfrac{1}{196}= \dfrac{1177}{196} \\
$

7 0

3 years ago

Help me with Balloon Mortgages?

Ket [755]

I just answered this question. Here's my answer.

Home price is $245,000. There is no down payment mentioned.
I understand 20/4 as amortized over 20 years and balloon payment after 4 years.

Total cost would be = Balloon payment + Total monthly payment

4 years x 12 months = 48 months
Balloon payment = 216,789.79 x 1 mo = 216,789.79
Total monthly payment = 1,727.11 x 47 mos = 81,174.17

<span>Total cost = 216,789.79 + 81,174.17 = 297,963.96</span>

7 0

3 years ago