if the sum of roots of the quadratic equation x^(2)-3kx-(k+2)=0 is equal to the product of roots,find k

Answers

Answer 1

Answer:

1/2

Step-by-step explanation:

quadratic equation is ax²+bx+c=0

Products of roots is c/a

Sum of roots is -b/a

On comparing the above equation with general equation we have

a=1

b=-(3k)

c=-(k+2)

Now it is given that sum of roots and product of roots is equal

So,

-b/a=c/a

-b=c

-[-(3k)]=-(k+2)

3k=-k-2

3k+k=-2

4k=-2

k=-1/2


Related Questions

t = mx
Solve equation for m

Answers

Answer:

M=t/x

Step-by-step explanation:

I love these math problems! Do u have more? I really need something 2 do

So answer is m =t/x you welcome

Which expression is equivalent to 30 ÷ ( 3 + x)?

Answers

Answer:

???

Step-by-step explanation:

Please put down the answer choices?? Cant help much

find the measures of the missing angles in the parallelogram.

Answers

Answer:

p = 32       o = 148       q = 148

Step-by-step explanation:

Which statement(s) most directly apply to communism?

I. There is little or no private ownership.
II. Businesses are operated for the benefit of the people as a whole.
III. Individuals who take risks can gain great profits.
a.
I and II
b.
II only
c.
II and III
d.
I and III


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

A

Step-by-step explanation:

In the beginning, there was little or no private ownership. Cucumbers are a pretty interesting example. We had an exchange student who said all the cucumbers were raised on one collective the size of 10 sections. He didn't know how many people were on that farm but it employed many people. The farm was located near a very large city so transportation was not a problem. The state owned the farm.

The second one is a result of the first one. Collectives are not meant to benefit the individual. They benefit everyone.

Three is a characteristic of free enterprise.

A: I and II

Answer:

a.

I and II

Step-by-step explanation:

4. A sequence of transformations was applied to an equilateral triangle in a coordinate plane.
The transformations used were rotations, reflections, and translations. Which statement about
the resulting figure is true?
A. It must be an equilateral triangle with the same side lengths as the original.
B. It must be an equilateral triangle, but the side lengths may differ from the original
triangle.
C. It may be a scalene triangle, and all the side lengths may differ from the original triangle.
D. It may be an obtuse triangle with at least one side the same length as the original triangle.

Answers

Step-by-step explanation:

A It must be an equilateral triangle with the same side lengths as the original triangle

Solve for m angle DBC.

Answers

Angle CBA = Angle DBC + Angle ABD
78 = Angle DBC + 47
78 -47 = Angle DBC
Angle DBC = 31

plz help like i need it-​

Answers

Answer:

dont know if its a good answer but

Step-by-step explanation:

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

(

,

)

Set-Builder Notation:

{

x

|

x

R

}

The range is the set of all valid  

y

values. Use the graph to find the range.

Interval Notation:

(

,

)

Set-Builder Notation:

{

y

|

y

R

}

Determine the domain and range.

Domain:  

(

,

)

,

{

x

|

x

R

}

Range:  

(

,

)

,

{

y

|

y

R

}

sorry if put wrongly

Answer:

Step-by-step explanation:

Find the distance between the pair of points.
(3, 3) and (3,-4)

Answers

Distance between two points
√0+49=
√49
= 7
Distance between points (3, 3) and (3, -4) is 7

See picture

Convert 48 fluid ounces to cup I need help

Answers

Answer:

6 Cups

Step-by-step explanation:

There are 8 fluid ounces in a cup, 48 divided by 8 = 6

Erica had 30 dollars to spend on 3 gifts. She spent 10 7 10 dollars on gift A and 6 2 5 dollars on gift B. How much money did she have left for gift C?

PLZ HELP

I'm stuck on this :

Answers

Answer:

She went over her amount of money on her first two gifts so she has no money left for gift C.

Step-by-step explanation:

Gift A = 10 + 7 + 10 = 27

Gift B = 6 + 2 + 5 = 13

27 + 13 = 40

She went over her amount of money on her first two gifts so she has no money left for gift C???

Did you mean to put that many numbers for each gift or is there some kind of mistake in the question?

Charlotte works at an electronics store as a salesperson. Charlotte earns a 10% commission on the total dollar amount of all phone sales she makes, and earns a 4% commission on all computer sales. Charlotte had twice as much in computer sales as she had in phone sales and earned a total of $162 in commission. Write a system of equations that could be used to determine the dollar amount of phone sales Charlotte made and the dollar amount of computer sales she made. Define the variables that you use to write the system.

Answers

Answer:

I think it's 0.648

Step-by-step explanation:

10% of 4% of 162 = 0.648

Answer:

I think it's 0.648

Step-by-step explanation:

A clothing store is having a one
day sale offering 20% off all
merchandise. If Claudia spends
$99.84 on the day of the sale,
excluding sales tax, what would the
purchase have cost her at full price?

Answers

o saw this question om edge its b


Help this is due in 2 minutes

Answers

Answer:

The value of the machinery after 5 years is $236.20

Step-by-step explanation:

Generally, we have the depreciation exponential expression as;

V(t) = I (1 - r)^t

V(t) is the value of the machinery at a point in time

I is the initial value or the cost of the machinery when bought which is $400

r is the rate of decrease which is 10% and is same as 10/100 = 0.1

t is the time which is 5 years

Substituting these values;

V(5) = 400( 1 - 0.1)^5

V(5) = 236.196

to the nearest vent, this is $236.20

The function ƒ(x) = 2x − 1 indicates:

a downward shift of 1 unit.
a shift of 1 unit to the left.
an upward shift of 1 unit.
None of these choices are correct.

Answers

Answer:

the function f(x) = 2x - 1 indicates:

a downward shift of 1 unit

as the y-intercept: (0, -1)

State if the three numbers can be the measures of the sides of a triangle
5, 12, 10
Yes
No

Answers

No it can not since two of the sides of a triangle are the same. Don’t click the links!

What does "m" represent in y=mx+b

Answers

m represents the slope of the line

Answer:

M represent the slope.

Step-by-step explanation:

Slope-intercept form:

y=mx+b

The m represents is the slope.

The b represents is the y-intercept.

find the equation to the line below acellus y=

Answers

Answer:

y=mx+C

or

y= m(x-x1)+y1

Tammy bought yogurt and toppings at the frozen yogurt shop. She paid $7.80 for yogurt and toppings that weighed a total of 15 ounces. Which table represents the same relationship between cost in dollars, c, and ounces of yogurt and toppings, o? Group of answer choices

Answers

Step-by-step explanation:

zoom I'd - 9038735228 pwd -97cEeT I m getting bored wanna come for intresting talk

The relationship between cost in dollars, c, and ounces of yogurt and toppings, o is c = 0.52o

What is linear equation?

An equation between two variables that gives a straight line when plotted on a graph.

Given that, Tammy bought yogurt and toppings at the frozen yogurt shop. She paid $7.80 for yogurt and toppings that weighed a total of 15 ounces.

Cost of 1 ounce of yogurt and toppings = 7.80/15 = 0.52

The equation for finding the cost c for o ounces of yogurt and toppings = c = 0.52o

Hence, The relationship between cost in dollars, c, and ounces of yogurt and toppings, o is c = 0.52o

For more references on linear equation, click;

https://brainly.com/question/11897796

#SPJ2


someone please help meeee !! I would really appreciate it

Answers

Answer:

cos 25° = X/11

and

sin 65° = X/11

is this good enough or do you need more workings?

Answer:

C = 90°

Step-by-step explanation:

The interior angles in every triangle are equal to 180 degrees. So, this means that

[tex] \alpha + \beta + \gamma \\ = 180 \: degrees[/tex]

Which means that A + B +C = 180 degrees

A=25°

B = 65°

C =?

C = 180° - (A + B)

C = 180° - (25° +65°)

C = 180° - 90°

C = 90°

Angelina got 19 out of 25 questions on her science test correct. What percentage did Angelina get on her math test?

Answers

Answer:

76%

Step-by-step explanation:

Convert the fraction 19/25 into decimal

19/25 = 0.766

Multiply the decimal by 100: 0.76 × 100 = 76%

Answer:

76%

Step-by-step explanation:

19/25×100

76%

In order for you to get the percentage, you multiply the fraction of gotten out of total to 100

Help me with this pleaseeee

Answers

Answer:

A, B, C.

Step-by-step explanation:

Which two of the following have the same value as 50.96?
Choose 2 answers:

Answers

Answer:

A and C

Step-by-step explanation:

A: 5 tens = 50

9 tenths = 0.9

6 hundreths = 0.06

= 50.96

C: 5*10 = 50 + 9 * 1/10 = 0.9 + 6 * 1/100 = 50.96

Two angles are complementary. One angle is 52°. How many degrees is the other angle?

Answers

Answer:

B

Step-by-step explanation:

Complementary angles sum to 90° then the other angle is

90° - 52° = 38°

Answer:

B 38°

Step-by-step explanation:

complementary angles are two angles that up to 90°, since we know one is 52°, 90-52=38, so your answer is 38

what 20% of 21 bucks

Answers

Answer: 4.2

Step-by-step explanation: 20 x 21

100

= 4.2

Which decimals are greater than the one shown in this diagram? HALP

Answers

Answer:

0.4 > 0.27

Step-by-step explanation:

0.4 is more if you look at the diagram

Answer:

The sign is >. Some decimals that are greater are 0.60, 0.94, and 0. 65.

Please answer correctly!! I’ll mark as brainliest!

No links no fake answers

Answers

Answer:

6) 33

7) 26.5

..................

please help me with the answer, ive been stuck on getting both answers for a while now ty

Answers

Answer:

[tex]3x + x - 17 + 13 = 116 \\ 4x = 120 \\ x = 30 \\ g = 73 \\ h = 43[/tex]

Leah products that she will need to contribute $7,000 each year for her College tuition she already has $4,000 in savings and the table shows the total value she will have in her account at the end of four years depending on how much he deposits if Leah wants enough after 4 years to cover her contribution for the first two years of college what is the minimum amount she should deposit each month

Answers

she should deposit 200$ each month

Hope this helps :)

Step-by-step explanation:

7,000×4=28,000

28,000÷2=14,000

List the sides of DEF in order from shortest to longest.

Answers

4cm to the bright side and left to 50

Solve for c.

4+c= 10

Answers

Answer:

c = 6

Step-by-step explanation:

have a nice day :)

Answer:

c=6

Step-by-step explanation:

4+c=10

4-4 +c =10-4

c=6

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