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san4es73 [151]
2 years ago
12

Solve the inequality 4-X < 9.

Mathematics
1 answer:
anzhelika [568]2 years ago
6 0

Answer:

36

Step-by-step explanation:

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Prove that the roots of x2+(1-k)x+k-3=0 are real for all real values of k​
masha68 [24]

Answer:

Roots are not real

Step-by-step explanation:

To prove : The roots of x^2 +(1-k)x+k-3=0x

2

+(1−k)x+k−3=0 are real for all real values of k ?

Solution :

The roots are real when discriminant is greater than equal to zero.

i.e. b^2-4ac\geq 0b

2

−4ac≥0

The quadratic equation x^2 +(1-k)x+k-3=0x

2

+(1−k)x+k−3=0

Here, a=1, b=1-k and c=k-3

Substitute the values,

We find the discriminant,

D=(1-k)^2-4(1)(k-3)D=(1−k)

2

−4(1)(k−3)

D=1+k^2-2k-4k+12D=1+k

2

−2k−4k+12

D=k^2-6k+13D=k

2

−6k+13

D=(k-(3+2i))(k+(3+2i))D=(k−(3+2i))(k+(3+2i))

For roots to be real, D ≥ 0

But the roots are imaginary therefore the roots of the given equation are not real for any value of k.

6 0
3 years ago
Cameron made 1 loaf of bread. His family ate 4/6 of the loaf of bread. How much of the loaf of bread remains?/
nlexa [21]

Answer:

2/6

Step-by-step explanation:

because 4/6 is eaten so that means 2/6 is left to eat

7 0
2 years ago
Read 2 more answers
Which salt produces the least salt hydrolysis in an aqueous solution?
Elodia [21]

Answer:

Potassium Iodide

Step-by-step explanation:

KI (potassium iodide) is a salt of stable (not radioactive) iodine that can help block radioactive iodine from being absorbed by the thyroid gland, thus protecting this gland from radiation injury. The thyroid gland is the part of the body that is most sensitive to radioactive iodine.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

6 0
3 years ago
Using the applet, explore the results for simulating a group of 30 people and noting whether there is a duplicated birthday (whe
STatiana [176]

Answer:I just need points

Step-by-step explanation:

Hey

3 0
2 years ago
Use the distributive property and common factors to write an expression equivalent to 15+35
Vaselesa [24]
35-15 i think dont hate me if im wrong

8 0
2 years ago
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