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
Vedmedyk [2.9K]
3 years ago
6

It is given 5 and h + 1 are the roots of the quadratic equation x² + (k - 1)x - 5 = 0,where h and k are constant.Find the value

of h and k.
pls help me,i'll mark u as the brainliest!​
Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
6 0

Answer:

Hello,

<u>k=-3 and h=-2</u>

Step-by-step explanation:

5\ is\ a \ root \of \ x^2+(k-1)*x-5=0\\\\5^2+(k-1)*5-5=0\\\\5*(k-1)+20=0\\\\k-1=\dfrac{-20}{5} \\\\k=-4+1\\\\\boxed{k=-3}\\

h+1 is thus a root of x²+(-3-1)*x-5=0

x²-4x-5=0

x²+x-5x-5=0

x(x+1)-5(x+1)=0

(x+1)(x-5)=0

h+1=-1

<u>h=-2</u>

You might be interested in
Collin ordered a set of yellow and brown pins. He received 400 pins in all. 340 of the pins were yellow. What percentage of the
cupoosta [38]
The yellow pins show as 85% of the total number of pins that Collin ordered
6 0
3 years ago
A box has five items, three good and two defective. three items are selected at random without replacement. let x be the number
user100 [1]
This problem can be solved from first principles, case by case.  However, it can be solved systematically using the hypergeometric distribution, based on the characteristics of the problem:
- known number of defective and non-defective items.
- no replacement
- known number of items selected.

Let
a=number of defective items selected
A=total number of defective items
b=number of non-defective items selected
B=total number of non-defective items
Then 
P(a,b)=C(A,a)C(B,b)/C(A+B,a+b)
where 
C(n,r)=combination of r items selected from n,
A+B=total number of items
a+b=number of items selected

Given:
A=2
B=3
a+b=3
PMF:
P(0,3)=C(2,0)C(3,3)/C(5,3)=1*1/10=1/10
P(1,2)=C(2,1)C(3,2)/C(5,3)=2*3/10=6/10
P(2,0)=C(2,2)C(3,1)/C(5,3)=1*3/10=3/10
Check: (1+6+3)/10=1 ok
note: there are only two defectives, so the possible values of x are {0,1,2}

Therefore the 
PMF:
{(0, 0.1),(1, 0.6),(2, 0.3)}

7 0
2 years ago
Helppppp me plzzzzzzzzzzz somebody
Inessa05 [86]

Answer:

(2,0)

Step-by-step explanation:

On the x-axis, the point is at 2. The point has a y-value of 0, as it's on the x-axis.

5 0
2 years ago
Read 2 more answers
A hat contains marbles. Of them, are red and are green. If one marble is randomly selected out of this hat, what is the probabil
maksim [4K]

Answer:

?

Step-by-step explanation:

4 0
3 years ago
A point is randomly chosen in the diagram shown below.
Anni [7]

Answer:

The likelihood that a point chosen inside the square will also be inside the circle: 78.54%

Step-by-step explanation:

  • Let x is the side of the suqare

=> the area of the square is: x^{2}

  • Let d is the diameter of the circle

=> the area of the circle : \frac{1}{4} d^{2}π

However, d=x because of the square property  

<=> the area of the circle : \frac{1}{4} x^{2}π

The likelihood that a point chosen inside the square will also be inside the circle:

the area of the circle / the area of the square

= \frac{1}{4} x^{2}π / x^{2}

= \frac{1}{4} π *100%

= 0.7854 * 100%

= 78.54%

8 0
3 years ago
Read 2 more answers
Other questions:
  • I need an inequality
    10·1 answer
  • An angle is 10° more than the measure of its complement. Find the number of degrees in each angle. The angles measure degrees.
    5·1 answer
  • (-5,3),(0,0) what would the equation be 3/5
    7·1 answer
  • An item is regularly priced at $37. Kira bought it at a discount of 35% off the regular price.
    15·2 answers
  • A motorboat that travels with a speed of 20 km/hour in still water has traveled 20 km against the current and 180 km with the cu
    14·1 answer
  • Module 04.03 Exponential Functions and Models: Essential Questions:
    15·1 answer
  • Multiply. Type your answer in the box. Do not use any spaces.<br><br> (+19) x (–3) =
    5·2 answers
  • Suppose point z is halfway between point w and x a standard numberline, and point x is halfway between points z and y. Where is
    12·1 answer
  • PLEASE HELP IM BEGGING YOU ITS DUE IN 15 MIN ILL GIVE BRAINEST AND PTS
    15·1 answer
  • What is the y-intercept of the line whose equation is y=-x-2?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!