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Molodets [167]
2 years ago
12

When you roast coffee, it loses 12% of its weight. how much fresh coffee do you need in order to get 14 2/25 lb of roasted coffe

e?
Mathematics
1 answer:
Komok [63]2 years ago
6 0

Answer:

16 lb of fresh coffee.

Step-by-step explanation:

Let  x pound be the  amount of fresh coffee needed.

100 - 12 = 88%  is equivalent to 14 2/25  of roasted coffee.

By proportion  x = 14 2/25  /  88/100

= 352 / 25 * 100/88

= 35200 / 25 * 88

= 16 lb  (answer).

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Give the discriminant of the equation 0 = −x2+6x−9<br>please answer
Brut [27]

Answer:

x = 3

Steps:

- ( {x}^{2}  - 6x + 9) = 0

-  {(x - 3)}^{2}  = 0

{(x - 3)}^{2}  = 0

x - 3 = 0

There you go!

8 0
3 years ago
Different hotels in a certain area are randomly selected, and their ratings and prices were obtained online. Using technology, w
Savatey [412]

Answer:

a. y= 130x + 350 + \epsilon

b. The symbol y-bar represents the average price of hotels in the area

Step-by-step explanation:

a. The regression line equation is given by:

y=\alpha x + \beta + \epsilon

Where Alpha represents the slope, Beta represents the intercept with the Y axis, and epsilon represents the random component of the model. Thus,

\alpha = 130 y \beta = 350  Obtaining:

y= 130x + 350 + \epsilon.

b.  In a simple linear regression model the value of y-bar represents the average of all values ​​of y observed. Thus, since y represents the prices of the hotels, then y-bar is the average price of hotels in the area.

5 0
2 years ago
2. What is the slope of the line through<br> the points (-5, 7) and ({0,-2) ?
valentinak56 [21]

Answer:

-9/5

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-2-7)/(0-(-5))

m=-9/(0+5)

m=-9/5

6 0
2 years ago
A square is shown below. Which expression can be used to find the area, in square units, of the shaded triangle in the square?
BaLLatris [955]

We will use this formula = 1/2 × base × height

And thus

1/2 × 8 ×8

4 0
3 years ago
Three years ago, Andy invested $7,000 in an account that earns 10% interest compounded annually.
Serggg [28]
Andy has $9317.00, to find your answer, do y=7000(1.10)^3 and you get 9317.
7 0
3 years ago
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