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3 years ago

Which property is used in the statement?

Mathematics

1 answer:

nignag [31]3 years ago

7 0

Its D . Subtraction property of equation

Let me show you why

p+5-8

Subtract 5 from both sides

p+5-5=-8-5

p=-13

So , yeah its D

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You’re trying to decide which cell phone plan to purchase. Plan A charges $40 for a new phone and $20 a month for usage. Plan B

Keith_Richards [23]

Answer:

Plan A - 20x+40

Plan B - 30x

Step-by-step explanation:

x will determine the number of months.

For example, Plan A's equation

If I paid for one month, I should get $60.

20(1)+40 = 60

Now for three months, I should get $100. Because Plan A charges $20/month after a one time fee of $40 for the new phone.

20(3)+40 = 100

On the other hand, Plan B gives away a free phone, meaning no one-time fees. It only charges us $30/month. That's easy.

30(1) = $30

30(3) = $90

3 0

3 years ago

A local bakery charges $2.75 per cupcake.

USPshnik [31]

Answer:

Step-by-step explanation:

y = 2.75x

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6 0

2 years ago

Read 2 more answers

You have $5600. The best interest rate you can find is 3%

EleoNora [17]

Answer:

18 years

Step-by-step explanation:

The formula for computing accrued amount A for a principal of P at an interest rate of r(in decimal) compounded n times in a year for t years is given by

$A = P(1 + \frac{r}{n})^{nt}$

Note that r is percentage converted to decimal. So 3% = 3/100 = 0.03

We can rearrange the above equation to:

$\frac{A}{P} = (1 + \frac{r}{n})^{nt}$

Taking logs on both sides

$log(\frac{A}{P}) = log(1 + \frac{r}{n})^{nt}$

This gives

$log(\frac{A}{P}) =nt \times log(1 + \frac{r}{n})\\So,\\nt = \frac{log(\frac{A}{P})}{ log(1 + \frac{r}{n})}$

In this particular problem, n = 4, , A= 9600, P = 5600, r =0.03, so r/n = 0.03/4 = 0.0075

1 + r/n = 1+0.0075 = 1.0075

4t = log(9600/5600)/log(1.0075) = log(1.714) / log(1.0075) = 0.234 /0.00325 = 72

t = 72/4 = 18 years

4 0

2 years ago

For ten school days the numbers of bikes parked at a school bike rack are 10,12,8,11,13,9,2,1,9, and 12

kumpel [21]

Step-by-step explanation:

for this question is not even possible

6 0

2 years ago

The mean of 2.7, 3.6 and 1.8

kolezko [41]

Set them up from least to greatest..
The mean is the average of all the data so..
The answer is 2.7

8 0

3 years ago