1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dimaraw [331]
3 years ago
11

How do you this problem?

Mathematics
1 answer:
fgiga [73]3 years ago
3 0

f(x) = ax^2 - 4x + b

If x = -2 , 3 are solutions of zeros function f(x) then b = ?

If x = -2 then a(-2)^2 - 4(-2) + b = 0

4a + 8 + b = 0 (1st)

If x = 3. then a(3)^2 - 4(3) + b = 0

9a - 12 + b = 0 (2nd)

Subtract (2nd) and (1st)

4a + 8 + b = 0 (1st)

9a - 12 + b = 0 (2nd)

--------------------------

-5a + 20 = 0

-5a = -20

a = 4

Substitute a = 4 into 4a + 8 + b = 0 (1st)

4(4) + 8 + b = 0

16 + 8 = -b

b = -24

Answer is A) -24

Double check:

a = 4 and b = -24 so

f(x) = 4x^2 - 4x - 24

zero function:

4x^2 - 4x - 24 = 0

4(x^2 - x - 6) = 0

4(x - 3)(x + 2) = 0

x - 3= 0; x = 3

x = -2 = 0; x = -2

x = -2 , 3 are solutions of the function.

You might be interested in
Joel is looking at a costs for using a gym. He could pay $50 per month for unlimited use or he could pay $12 per month plus $4 p
just olya [345]

Answer:

10

Step-by-step explanation:

4 x 10 = 40

40 + 12 = 52

6 0
3 years ago
Hey can you please help me posted picture of question
Elan Coil [88]
The correct answer is A.

Horizontal shift is obtained by addition/subtraction a number to every occurrence of x in the equation. Addition indicates a shift towards left and subtraction indicates a shift towards right.

So the correct answer is Subtract that number From.
4 0
3 years ago
Which founder and company sell shoes, but donate as many to the poor as are sold?
Amanda [17]
If your looking for a company maybe Toms? im not sure
6 0
3 years ago
Read 2 more answers
Each beehive on Larson's Honey Farm usually produces 85 pounds of honey per year. About how many pounds of honey will 1000 hives
never [62]
85000 pounds of honey 
5 0
3 years ago
Read 2 more answers
Find two unit vectos that are orthogonal to both [0,1,2] and [1,-2,3]
alekssr [168]

Answer:

Let the vectors be

a = [0, 1, 2] and

b = [1, -2, 3]

( 1 ) The cross product of a and b (a x b) is the vector that is perpendicular (orthogonal) to a and b.

Let the cross product be another vector c.

To find the cross product (c) of a and b, we have

\left[\begin{array}{ccc}i&j&k\\0&1&2\\1&-2&3\end{array}\right]

c = i(3 + 4) - j(0 - 2) + k(0 - 1)

c = 7i + 2j - k

c = [7, 2, -1]

( 2 ) Convert the orthogonal vector (c) to a unit vector using the formula:

c / | c |

Where | c | = √ (7)² + (2)² + (-1)²  = 3√6

Therefore, the unit vector is

\frac{[7,2,-1]}{3\sqrt{6} }

or

[ \frac{7}{3\sqrt{6} } , \frac{2}{3\sqrt{6} } , \frac{-1}{3\sqrt{6} } ]

The other unit vector which is also orthogonal to a and b is calculated by multiplying the first unit vector by -1. The result is as follows:

[ \frac{-7}{3\sqrt{6} } , \frac{-2}{3\sqrt{6} } , \frac{1}{3\sqrt{6} } ]

In conclusion, the two unit vectors are;

[ \frac{7}{3\sqrt{6} } , \frac{2}{3\sqrt{6} } , \frac{-1}{3\sqrt{6} } ]

and

[ \frac{-7}{3\sqrt{6} } , \frac{-2}{3\sqrt{6} } , \frac{1}{3\sqrt{6} } ]

<em>Hope this helps!</em>

7 0
3 years ago
Other questions:
  • Plzplzplz please help
    14·1 answer
  • if you are dealt 3 cards from a shuffled deck of 52 cards find the probability that all 3 cards are picture cards
    13·1 answer
  • Use the point slope equation to identify the slope and the coordinates of a point
    5·2 answers
  • Simply as much as possible.<br><br> 4.4b-2.6b
    10·2 answers
  • What is the slope of the line shown below (6, 6) (1, -4)
    12·2 answers
  • F = 9/5C + 32 solve for f​
    6·1 answer
  • Y = 8600(0.96) given the following exponential function identify wether the change represents growth or decay,and determine the
    5·1 answer
  • 13. Solve for x so that f(x) = 5​
    13·1 answer
  • I need help on these both (it's 12 year old math) ​
    7·2 answers
  • Which of these is the same as 0.5888888​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!