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alexandr1967 [171]
3 years ago
7

SOLVED I NEED THE ANSWER ASAP

Mathematics
2 answers:
Mademuasel [1]3 years ago
4 0

Answer: -5

Step-by-step explanation:

15.5z=-77.5\\z=-\frac{77.5}{15.5} \\z=-5

OverLord2011 [107]3 years ago
3 0
I’m pretty sure the answer is -5
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Multiply.<br> (5x2-6x+2) x (4x2-3x)
stich3 [128]

Answer:

<em>18x² - 84x + 96</em>

Step-by-step explanation:

(5 × 2 - 6x + 2) × (4 × 2 - 3x)

5 × 2 (4 × 2 - 3x) - 6x(4 × 2 - 3x) + 2(4 × 2 - 3x)

80 - 30x - 6x(4 × 2 - 3x) + 2(4 × 2 - 3x)

80 - 30x - 48x + 18x² - 6x

96 - 84x + 18x²

18x² - 84x + 96

Hope this helps! :)

6 0
2 years ago
Jamilia has a weather station in her backyard. She uses a rain gauge to track the total rainfall during two storms.
Zielflug [23.3K]

Answer:

1) The graph is linear, because it has an upwards slope of 5, we can tell because 3*5 =15 and 6*5=30.  

2)Real world meaning is the delta change. Hence in this case it's the increase in rain over time. More rain or raining harder as time progresses.

3)It is not linear because the second sample shows a slope of 7.5 meanwhile the third sample shows a slope of 6 which allows us to conclude that it is not linear.

4)The y intercept means the total rain that was present at the start of the recording which essentially means there was no rain when she started the experiment.

3 0
3 years ago
1. Reduce: 21 =<br> 21<br> Reduce:<br> 28
Hoochie [10]

Answer:

3/4

Step-by-step explanation:

21/28=3/4

3 0
3 years ago
A 2 column table with 5 rows. The first column, x, has the entries, negative 4, negative 3, negative 2, negative 1. The second c
nikitadnepr [17]

Answer

1. y = –2.5x – 15  (A)

2.(-6,0) (C)

Step-by-step explanation:

Its correct for Ed

9 0
2 years ago
Read 3 more answers
I want to calculate APR for Automobile Loans without a calculator, but I struggle with division. Could someone please explain th
vfiekz [6]

Explanation:

Of all the variables in an amortization formula, the interest rate is the one that cannot be solved for. Finding APR for a given loan is generally an iterative process, or one that can be done by many spreadsheets, graphing calculators, and on-line tools.

The formula for the value of a monthly loan payment A on principal P, for t years, at interest rate r is ...

  A = P(r/12)/(1 -(1 +r/12)^(-12t))

but that is of no direct help in finding APR.

__

This formula can be used to develop relations that can approximate APR. The formulas below are for different loan lengths, and will be accurate to 2 decimal places of APR value for APRs in the range of 0 to 15%.

They work like this:

  Find the ratio of total loan repayment cost to the principal amount of the loan. (Division is required for this.) It will generally be a number between 1 and about 1.5 for auto loans of reasonable duration.

Use that value for x in the expression corresponding to the loan length. The range of output from these formulas is from 0 to 15, meaning the APR is 0% to 15%.

<em>APR Formulas</em>

<u>2-year loan</u>

  APR = ((((8.03501x - 53.6947)x + 153.636)x - 248.528)x + 306.753)x -166.201

<u>3-year loan</u>

  APR = ((((4.37626x - 30.7798)x + 92.6767)x - 157.555)x + 203.183)x -111.901

<u>4-year loan</u>

  APR = ((((2.7783x - 20.3207)x + 63.6117)x - 112.328)x + 150.19)x -83.9314

<u>5-year loan</u> (note the leading minus sign)

  APR = ((((( -1.28076x + 11.1732)x - 42.3671)x + 91.6612)x - 125.977)x + 137.601)x -70.8105

<u>6-year loan</u> (note the leading minus sign)

  APR = (((((-0.864078x + 7.82602)x - 30.8075)x + 69.1893)x - 98.6637)x + 111.919)x -58.599

<em>Example</em>

You want to borrow $22,175, and you're told that your monthly payment amount on a 4-year loan would be $512.99. Your total repayment is ...

  $512.99×48 = $24,623.52

Dividing this by the amount you borrowed, you get a ratio of ...

  24,623.52/22,175 ≈ 1.1104

Using this value in the formula for the 4-year loan APR, we make the following calculations:

   APR = ((((2.7783(1.1104) - 20.3207)(1.1104) + 63.6117)(1.1104) - 112.328)(1.1104) + 150.19)(1.1104) -83.9314

     = (((-17.2357)(1.1104) + 63.6117)(1.1104) - 112.328)(1.1104) + 150.19)(1.1104) -83.9314

     = (((44.4732)(1.1104) - 112.328)(1.1104) + 150.19)(1.1104) -83.9314

     = ((-62.945)(1.1104) + 150.19)(1.1104) -83.9314

     = (80.2959)(1.1104) -83.9314

     = 5.2292

  APR = 5.23 . . . percent (result should be rounded to 2 decimal places)

__

<em>Comment on formula evaluation</em>

It is tedious, but necessary, to keep 4 decimal places of precision in each of the intermediate calculations, rounding where required. These formulas are taking relatively small differences of relatively large numbers, so the best reasonable precision should be maintained in all calculations. The final answer should be rounded to 2 decimal places.

These computations can be done by hand, but a calculator or spreadsheet is immensely helpful.

6 0
3 years ago
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