All categories

2 years ago

Find the possible values of the constant

Mathematics

1 answer:

andreev551 [17]2 years ago

5 0

Step-by-step explanation:

x - (k+2)x + 4

Since the roots are equal, b^2 - 4ac =0

a =x, b=k+2, c =4

(k+2)^2 - 4(1×4) =0

K^2 + 4k + 4-16 =0

K^2 +4k - 12=0

K^2 +6k - 2k - 12 =0

K(k + 6) - 2(k +6)=0

(k-2)(k +6) =0

K =2 or - 6

You might be interested in

Asha and Lucy are selling pencils in a school shop.

Akimi4 [234]

Step-by-step explanation:

7x+22=2(5x+2)

7x+22=10x+4 (-7x)

3x+4=22 (-4)

3X=18 (divide by 3)

X=6 pencils

check if the number is correct

asha= 7*6=42 42+22 is 64

Lucy= 5*6=30 30+2 is 3264/32 is 2

asha= 7*6=42 42+22 is 64Lucy= 5*6=30 30+2 is 3264/32 is 2there fore asha sells twice as many as Lucy

8 0

3 years ago

What is the average rate of change of the function f(x)=2x+4 over the interval -4 ≤ x ≤ 1? Table

Tom [10]

Answer:

Step-by-step explanation:

the rate of change is measured as

$\frac{f(b) - f(a)}{b-a}$ in the closed interval [ a, b ]

here [a, b ] = [- 4, 1 ]

f(b) = f(1) = 2 + 4 = 6

f(a) = f(- 4) = - 8 + 4 = - 4

average rate of change = $\frac{6-(-4)}{1-(-4)}$ = $\frac{10}{5}$ = 2

7 0

2 years ago

What forms of measurement of length, width, height, and distance are forms of what measurement?

Katen [24]

The length, width, and height In the most common contexts in elementary school, mathematics does not have a formal definition for these terms, nor does it have rules about "proper" use.

8 0

2 years ago

Please answer! ill give you brainliest :)

Levart [38]

Answer:

answer what?

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

HELP ASAPPPPP<br> When graphing the inequality y > -4x + 6, what type of line should be graphed?

melomori [17]

Answer:

A dashed line

Step-by-step explanation:

The end points of the line for the inequality would not be included since y is only greater, not greater than or equal to.

6 0

3 years ago