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3 years ago

Which graph shows a quadratic function with a discriminant value of 0?

Mathematics

1 answer:

Tomtit [17]3 years ago

8 0

Answer:

see below

Step-by-step explanation:

A discriminant value of zero means there is exactly one x-intercept. The graph below has that characteristic.

_____

Comment on discriminant

discriminant > 0, two (2) x-intercepts (first 2 graphs)

discriminant < 0, no (0) x-intercepts (third graph)

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What is 0.5×(-0.6) ×0.4= and pls show how

blondinia [14]

Answer:

$- 0.12$

Step-by-step explanation:

1) Solve inside the parentheses.

$(0.5 \times - 0.6)$

2) Simplify (0.5 × - 0.6 ) to -0.3.

$- 0.3 \times 0.4$

3) Simplify -0.3 × 0.4 to -0.12.

$- 0.12$

Therefor, the answer is -0.12 .

5 0

3 years ago

Check whether x-1/2 is a factor of 8x3-4x2+10x-5

olga nikolaevna [1]

Answer:

x-1/2 is in fact a factor of 8x3-4x2+10x-5 so you are correct

Step-by-step explanation:

The equation can be simplified into (2x-1)(4x2+5) and 1/2 is one of the factors

4 0

3 years ago

Solve and show your work -(x + 5) = 5

-BARSIC- [3]

-(x + 5) = 5
-x - 5 = 5
-x = 5 + 5
-x = 10
x = -10

7 0

3 years ago

(ar^b)^4=81r^24 where a and b are positive integers. Work out a and b

galina1969 [7]

Answer:

Vales of a =3 and b = 6

Step-by-step explanation:

Given that: $(ar^b)^4 = 81r^{24}$ .....[1] where a and b are positive integers

we can write 81 and 24 as;

$81 = 3 \cdot 3 \cdot 3 \cdot 3 = 3^4$

$24 = 4 \cdot 6$

We have [1] as;

$(ar^b)^4 = 3^4r^{4 \cdot 6}$

Using power rules;

$a^nb^n = (ab)^n$

$a^n = b^n$ which implies a = b

then;

$(ar^b)^4 = (3r^6)^4$

$ar^b = 3r^6$

On comparing both sides we have;

a = 3 and

$r^b = r^6$

⇒ $b = 6$

Therefore, the value of a and b are, 3 and 6

6 0

4 years ago

A stack of paper is 5 1/2 inches long by 11.4 inches wide and 3.2 inches high.what is the volume of the stack of paper

sashaice [31]

Answer:

200.64

Step-by-step explanation:

Volume = Length x Width x Height

200.64 = 5.5 x 11.4 x 3.3

5 0

3 years ago