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3 years ago

15 x squared -35x+24

Mathematics

1 answer:

icang [17]3 years ago

7 0

Could you make this easier to read, perhaps by ensuring that you have copied the original problem exactly?

What I read, which may or may not be correct, is:

15x^2 - 35x + 24.

I graphed this on my calculator and found that the graph, a parabola opening up, never touches or crosses the x-axis. Thus, the given equation has no real roots.

If you were to find the discriminant, b^2 - 4ac, you'd find that it's negative, which is another strong clue that there are no real roots.

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Please someone help me with this!

Olenka [21]

Answer:

Please read the answer below.

Step-by-step explanation:

Question 2. 25% of what number is 30?

25% - Whole 30, 50% Whole 60, 75% Whole 90, 100% Whole 120

Question 3. What operation did you use the find the whole?

In the previous question, I found the whole, adding 30 to the previous value.

For example, I added 30 to 30 and calculate 60. To 60 then i added 30 to get 90 and added 30 to get 120 because in this question, all the 4 parts were exactly the same size (30).

Question 4. What are you multiplying/dividing? Do you use the percent or something else?

In the specific case of question 2, I noticed that the size of the parts were exactly the same, using it for calculating the whole. If 1 part out of 4 is 30, then 2 parts or 50% are 60, 3 parts or 75% are 90 and then 4 parts of 100% are the whole I'm being asked, in this case, 120.

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3 years ago

3x - 15 = 7 - 8x how do you solve this

Nikitich [7]

Answer:

X=2

Step-by-step explanation:

3x-15=7-8x

3x+8x=7+15

11x=22

x= $\frac{22}{11}$

x=2

6 0

3 years ago

Read 2 more answers

Show that sinxtanx=1-cos^2x/cosx

yawa3891 [41]

LHS: = $\sin x \tan x = \frac{\sin x \sin x }{\cos x} = \frac{\sin^2 x}{\cos x}$ (using $\tan x = \frac{\sin x}{\cos x}$ )

We know $\sin^2x + \cos^2x = 1 \Rightarrow \sin^2x=1-\cos^2x$ so we can replace the sin²x in the LHS expression as follows

$\frac{\sin^2x}{\cos x} = \frac{1-\cos^2x}{\cos x}$ which is the RHS.

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2 years ago

Find the measures of the indicated angle to the nearest degree.

Nata [24]

Answer:

? = 13.6

Step-by-step explanation:

Let unknown angle be x

tan x = p/b

tan x = 8/33

x =tan‐¹(8/33)

or, x = 13.62699486

so, x = 13.6

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3 years ago

What Is The Answer k3 - 4j +12, when k=8, j=2

Nady [450]

Answer:

The answer would be 28

Step-by-step explanation:

You would plug 8 in where k is and 2 where j is

so (8)3 - 4(2) +12

answer is 28

8 0

3 years ago

Read 2 more answers