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3 years ago

HELP PLEASE, WILL MARK BRAINLIEST

Mathematics

1 answer:

sasho [114]3 years ago

4 0

Answer:

Step-by-step explanation:

b square d -for ad +or -2a

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For the function F(x) = 2x^2-31x-51, where is the function increasing and positive? ( for all X values greater than what number

Ulleksa [173]

ANSWER
$x \: > \: 17$

EXPLANATION

The given function is

$f(x) = 2 {x}^{2} - 31x - 51$
Let us split the middle term to get,

$f(x) = 2 {x}^{2} -34x + 3x- 51$

We factor to obtain,

$f(x) = 2x(x - 17) -+3(x - 17)$

$f(x) = (2x -+3)(x -17)$

Let us find the zeros of f(x),

$(2x +3)(x - 17) = 0$

Either

$2x +3 = 0 \: or \: x - 17 = 0$
$x = -\frac{3}{2} \: or \: x = 17$

We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.

This gives us,

$\frac{- \frac{3}{2} + 17}{2} = 7.75$
Hence the axis of symmetry of the parabola has equation,

$x = 7.75$

Since the given function has minimum turning point, it will decrease and then increase.

The function will be increasing for
$x \: > \: 7.75$

The function will be increasing and positive for
$x \: > \: 17$

7 0

3 years ago

Please help me with this one. WILL MARK BRAINLIEST

belka [17]

1. Yes.
cranberry juice : total cups = 1 : 5 in all cases

2. Yes.
cranberry juice : total cups = 2 : 5 in all cases

3. No.
1 : 5 is not the same as 2 : 5.

7 0

3 years ago

Please help its from the lines and angles chapter

Murrr4er [49]

This is the answer of this question

4 0

4 years ago

A. If f(x)=3x+Ž, what is f(-6)?<br> (?<br><br> JUST NEED THE BOTTOM ANWSER

yawa3891 [41]

Answer:

f(-6) = -21

Step-by-step explanation:

Substitute x = -6 into f(x):

f(-6) = 3(-6) + (-6 ÷ 2)

= -18 - 3

= -21

5 0

3 years ago

Read 2 more answers

Display the set of data in a histogram.

VARVARA [1.3K]

Answer:

The answer to your question is the third histogram

Step-by-step explanation:

What we must check in a histogram is that the x-axis is represented the intervals and in the y-axis is represented the frequency.

The first histogram is incorrect just by observing the first bar, we notice that the correct frequency from 0 to 4 is 3, not 14. This histogram is incorrect.

Also, the second histogram is incorrect, the frequency of the first category is 3, not 12. This histogram is wrong.

The third histogram is correct because all the bars are in agreement with their frequencies.

The last histogram is incorrect, for example, the last frequency is 12, not 3.

4 0

3 years ago