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AleksandrR [38]

2 years ago

11

URGENT! I'm not quite sure if it's either C or D...Can someone please help me?

1 answer:

Anestetic [448]2 years ago

7 0

D because if there’s a margin of error it’s between 19 and 27 percent. C just doesn’t make sense

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A house purchased for $230,000 has lost 6% of its value each year for the last four years. What is the house worth now?

lutik1710 [3]

You can use the compound growth to work this out,

Firstly you need to make a multiplier for -6%;
1-(6/100) = 0.94

The you times the amount of money by 0.94 to the power of 4 because you are working out 4 years:
230000*0.94^4 = 179527.26

The answer is $179527.26,
Hope this helps! :)

3 0

3 years ago

9,13,43,55 what is the mean absolute deviate (MAD) of their ages

lisov135 [29]

Answer:

The mean absolute deviation of this data $\{9,13,43,55\}$ is $MAD =19$ .

Step-by-step explanation:

The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.

The steps to find the MAD include:

find the mean (average)
find the difference between each data value and the mean
take the absolute value of each difference
find the mean (average) of these differences

To find the mean absolute deviation of this data $\{9,13,43,55\}$ you must

Step 1: Calculate the mean.

$\:mean=\bar{x}= \frac{9+13+43+55}{4} =\frac{120}{4}=30$

Step 2: Calculate the distance between each data point and the mean and take the absolute value of each difference .

$|9-30|=21\\|13-30|=17\\|43-30|=13\\|55-30|=25$

Step 3: Add the distances together.

$21+17+13+25=76$

Step 4: Divide the sum by the number of data points.

$MAD = \frac{76}{4} =19$

7 0

3 years ago

Luke's Motel rents rooms with 2 beds for $65 and rooms with 1 bed for $56. On a given night Luke's Motel takes in $4836, and twi

Marat540 [252]

52 double bed rooms were rented, and that means there were 26 single bed rooms rented.

7 0

3 years ago

Which is the graph of f(x) = -(x + 3)(x + 1)?

ch4aika [34]

Answer:

Step-by-step explanation:

x intercepts are -3,-1

f(x)=-(x²+x+3x+3)=-(x²+4x)-3=-(x²+4x+4-4)-3=-(x+2)²+4-3

or f(x)=-(x+2)²+1

vertex is (-2,1)

so it is an inverted parabola with vertex (-2,1) and x-intercepts (-3,0) and (-1,0)

3 0

3 years ago

Of the following options, what could be a possible first step in solving the equation 3x − 1 = 2x + 4?

madreJ [45]

Move the "x" terms to the same side

5 0

2 years ago

Read 2 more answers