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algol13
3 years ago
8

Item 13 Factor out the coefficient of the variable. The expression 14y+38 factored is

Mathematics
1 answer:
klemol [59]3 years ago
8 0

Answer:

2(7y+19)

Step-by-step explanation:

14y+38=2(7y+19)

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No doubt your text advises how to arrive at a best-fit exponential model. The two graphing calculators I used gave different answers. The first one modeled the function as
y = 398.494(0.50526)^x
For x = 7, this model gives y = 3.35

The second calculator, a TI-84 work-alike, modeled the function as
y = 422.110(0.48896)^x
For x=7, this model gives y = 2.82

Using the first and last data points only, the model is
y = 200(0.06)^((x-1)/4)
For x=7, this model gives y = 2.94

Using yet another calculator to do linear regression on the log of y, the function is modeled by
y = 10^(2.62543-0.31073x)
which is another way to write the function produced by the TI-84 work-alike.

So, the technology I used gives a couple of reasons to choose
  A. 2.86
and a couple of reasons to choose
  C. 2.95

Of the models shown here, the ones with the lowest mean absolute deviation and the least squared error were the ones that produced the highest values of y for x=7, suggesting 2.95 is the best choice.


It would be advisable to use the procedure described in your text.

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2 years ago
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A family has five children. The probability of having a boy is 1/2.
Furkat [3]

Answer:

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Step-by-step explanation:

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3 years ago
A car starts with a speed of 20km/ hr and accelerates at a rate of 3.4 m/s for 20 seconds. What is the final speed of the car in
Schach [20]

The relevant formula that we can use in this situation is:

v = v0 + at

where v is the final velocity, v0 is the initial velocity = 20 km/hr, a is acceleration at 3.4 m/s^2 and t is time at 20 seconds

First convert v0 to m/s, v0 = 5.56 m/s

v = 5.56 m/s + 3.4 m/s^2 * 20 s

v = 73.56 m/s

Then convert back to km/hr:

<span>v = 264.82 km/hr</span>

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3 years ago
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Sphinxa [80]

Answer:

BRAINLY PLEASE

Step-by-step explanation:

y=-3x+2

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2 years ago
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