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rjkz [21]
3 years ago
10

How many x -intercepts does the parabola whose function is f(x)=3 x 2 +4x+4

Mathematics
2 answers:
Viktor [21]3 years ago
5 0

Answer:

The answer is 0

Step-by-step explanation:

Let's break this down. . .

x-intercepts are x-intercepts that have 0 as their y.

For example: (9,0) , (5,0),  (3,0) are x-intercept, while (0,9), (0,5), (0,3) are not  x-intercepts.

Graph f(x) = 3x^2 + 4x + 4

There is no x-intercept.

artcher [175]3 years ago
3 0

Answer:

They are none x- intercepts on the parabola. To find the x-intercept, substitute in 0 for y and solve for x.

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A couple purchased a home and signed a mortgage contract for $900,000 to
Tema [17]

9514 1404 393

Answer:

  • $33,336.83
  • $35,176.68
  • $36,869.23
  • $38,266.75
  • $39,158.08

Step-by-step explanation:

The amortization formula can be used to find the payment value.

  A = P(r/2)/(1 -(1 +r/2)^(2n))

where P is the principal amount at the beginning of the loan period, r is the annual interest rate, n is the number of years remaining on the loan

The value of A in this scenario is the semi-annual payment.

Initially, the interest rate is 0.055 and the number of years remaining is 25.

After the first 5-year period, the interest rate goes up by 12%, so is multiplied by a factor of 1.12 to become 6.16% per year. The same growth factor is applied to the interest rate at the beginning of each 5-year period.

Of course, the number of years remaining is decreased by 5 years at the beginning of the next 5-year period.

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The Principal remaining at the end of each 5-year period is the starting principal for the next period. It is calculated from ...

  FV = P(1 +r/2)^10 -A((1 +r/2)^10 -1)/(r/2)

Where P is the starting principal, A is the loan payment as calculated above, and r is the annual interest rate.

__

These formulas are built into spreadsheet functions, so the desired set of loan payments can be calculated easily by that technology. The result is attached. In the "# pmts" column is the value used to amortize the loan for the 5-year period. The semiannual payment is calculated as though the loan would be completely paid off in that number of payments, keeping the same interest rate for the duration. Of course, that payment series is interrupted and the loan recalculated at the beginning of the next 5 years.

The half-yearly payments for each 5-year interval are ...

  $33,336.83

  $35,176.68

  $36,869.23

  $38,266.75

  $39,158.08

_____

<em>Additional comment</em>

The values displayed in the spreadsheet are rounded to the values shown. The values used in calculation have 14 or more significant digits. This means the numbers here may vary from those provided by a lending institution. In the real world, the principal and interest values are rounded to cents with each payment, so actual results may vary by a few cents either way.

7 0
3 years ago
7<br> x<br> +<br> 12<br> =<br> 2<br> (<br> 4<br> x<br> −<br> 5<br> )
lorasvet [3.4K]

Answer:

-156?

Step-by-step explanation:

4 0
2 years ago
Help me answer this please
Anna007 [38]

Answer:

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Step-by-step explanation:


5 0
3 years ago
Suppose that 12 people enter an elevator on the 1st floor of a 24 floor building. Assume that all 12 independently pick a floor
olga2289 [7]

Answer:

∑E(x_{i}) = 13.49167 floors

Step-by-step explanation:

The expected number of floors no one get off = ∑E(x_{i}) where i is from 0 to 23

and E(x_{i}) = ∑x_{i}P(x_{i})

here x_{i} is the indicator of floor where no one gets off, its value is 0 when  atleast one person get off on its floor and 1 when when no one gets off.

Now,

P(x_{i}=1) = (22/23)¹²

P(x_{i}=0) = [1-(22/23)¹²]

Now,

E(x_{i}) = ∑x_{i}P(x_{i}) = 0* [1-(22/23)¹²] + 1*(22/23)¹² =0.586594704

For total number of floors where no one gets off

∑E(x_{i}) = E(x₁)+E(x₂)+E(x₃)........................+E(x₂₃)

∑E(x_{i}) = 23*0.586594704

∑E(x_{i}) = 13.49167 floors

6 0
3 years ago
Find the area of the shape shown below.<br> 12 by 5 by 5
hodyreva [135]

Answer:

300 squared unit of measurement

Step-by-step explanation:

12*5*5

12*5 = 60

60*5 = 300

I am assuming this is a rectangular prism

7 0
3 years ago
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