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Brilliant_brown [7]
3 years ago
14

F(x) = -4x^2+ 10 Find f(-2)

Mathematics
2 answers:
sveticcg [70]3 years ago
6 0
-6 should be the correct answer
NISA [10]3 years ago
3 0

Answer:

-6

Step-by-step explanation:

plug -2 into x

You might be interested in
Factorising quadratics<br><br> X squared + 5x -6<br> X squared - 2x15<br> X squared -7x +12
34kurt

Answer:

  • (x -1)(x +6)
  • (x -5)(x +3)
  • (x -4)(x -3)

Step-by-step explanation:

In each case, you're looking for divisors of the constant that have a sum equal to the x-coefficient. Those divisors are the constants in the binomial factors.

1) -6 = -1·6 = -2·3 . . . . . (-1)+(6) = 5, so these are the constants of interest.

  x^2 +5x -6 = (x -1)(x +6)

__

2) -15 = -1·15 = -3·5 = -5·3 . . . . . (-5)+(3) = -2, so these are the constants of interest

  x^2 -2x -15 = (x -5)(x +3)

__

3) 12 = -1·-12 = -2·-6 = -3·-4 . . . . . (-3) +(-4) = -7, so these are the constants of interest

  x^2 -7x +12 = (x -3)(x -4)

5 0
3 years ago
The Johnsons are buying their first home. They are contemplating two similar loans. The first is a 30-year loan for $150,000 at
OLEGan [10]

Johnson's will pay by the end of the 20-year loan $326,807.25

Johnson's will pay by the end of the 30-year loan $512,109.68

Step-by-step explanation:

The formula for compound interest, including principal sum is

A=P(1+\frac{r}{n})^{nt} , where:

  • A is the future value of the investment/loan, including interest
  • P is the principal investment amount (the initial deposit or loan amount)
  • r is the annual interest rate (decimal)
  • n is the number of times that interest is compounded per unit t
  • t is the time the money is invested or borrowed for

The Johnson's are buying their first home. They are contemplating

two similar loans

The first is a 30-year loan for $150,000 at an interest rate of 4.1% APT

compounded monthly

∴ P = $150,000

∴ r = 4.1% = (4.1/100) = 0.041

∴ n = 12 ⇒ compounded monthly

∴ t = 30

- Substitute all of these values in the formula above

∴ A=150,000(1+\frac{0.041}{12})^{(12)(30)}

∴ A = $512,109.68

Johnson's will pay by the end of the 30-year loan $512,109.68

The second is a 20-year loan for a $150,000 at an interest rate of 3.9%

APR compounded monthly

∴ P = $150,000

∴ r = 3.9% = (3.9/100) = 0.039

∴ n = 12 ⇒ compounded monthly

∴ t = 20

- Substitute all of these values in the formula above

∴ A=150,000(1+\frac{0.039}{12})^{(12)(20)}

∴ A = $326,807.25

Johnson's will pay by the end of the 20-year loan $326,807.25

Learn more:

You can learn more about interest in brainly.com/question/12773544

#LearnwithBrainly

7 0
3 years ago
Select the correct answer. Find the solution(s) for x in the equation below. x^2 -25 =0
Travka [436]

Answer:

Step-by-step explanation:

Find the roots of x^2-25=0 by solving for x.

Add 25 to both sides

x^2=25

Square root both sides

x=-5

x=5

4 0
2 years ago
Which could be the length, width, and height of a rectangular prism with a volume of  81 cm 3 ?
marin [14]

Answer:

Length 3 cm.

Width 3 cm.

height 9. cm

Step-by-step explanation:

The volume  is the length * width * height  = LWH.

81 =  3* 3 * 9 so L could be 3, W could be 3 and H could b 9 cm.

5 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST ANSWER! What is y-5/3=1?????
Marrrta [24]

Answer:

Y =1 is a good answer for this question.

5 0
3 years ago
Read 2 more answers
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