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Karo-lina-s [1.5K]
3 years ago
7

I'LL GIVE YOU 35 POINTSSS HELP MEEE I NEED ASSISTANCE

Mathematics
1 answer:
Furkat [3]3 years ago
3 0
I hope this helps you

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Students ages 10-17 were survey about their eating habits during breakfast
kap26 [50]

ok is there more info about it

6 0
3 years ago
Read 2 more answers
Help pls I attached a picture
seropon [69]

Answer:

x= 7\sqrt{2}

Step-by-step explanation:

It's a 45 45 90 triangle

The legs are = x while the hypotenuse is x \sqrt{2}.

Therefore the answer is 7\sqrt{2}

8 0
3 years ago
F(x) = x2 − x − ln(x) (a) find the interval on which f is increasing. (enter your answer using interval notation.) find the inte
Mekhanik [1.2K]

Answer:

(a) Decreasing on (0, 1) and increasing on (1, ∞)

(b) Local minimum at (1, 0)

(c) No inflection point; concave up on (0, ∞)

Step-by-step explanation:

ƒ(x) = x² - x – lnx

(a) Intervals in which ƒ(x) is increasing and decreasing.

Step 1. Find the zeros of the first derivative of the function

ƒ'(x) = 2x – 1 - 1/x = 0

           2x² - x  -1 = 0

     ( x - 1) (2x + 1) = 0

         x = 1 or x = -½

We reject the negative root, because the argument of lnx cannot be negative.

There is one zero at (1, 0). This is your critical point.

Step 2. Apply the first derivative test.

Test all intervals to the left and to the right of the critical value to determine if the derivative is positive or negative.

(1) x = ½

ƒ'(½) = 2(½) - 1 - 1/(½) = 1 - 1 - 2 = -1

ƒ'(x) < 0 so the function is decreasing on (0, 1).

(2) x = 2

ƒ'(0) = 2(2) -1 – 1/2 = 4 - 1 – ½  = ⁵/₂

ƒ'(x) > 0 so the function is increasing on (1, ∞).

(b) Local extremum

ƒ(x) is decreasing when x < 1 and increasing when x >1.

Thus, (1, 0) is a local minimum, and ƒ(x) = 0 when x = 1.

(c) Inflection point

(1) Set the second derivative equal to zero

ƒ''(x) = 2 + 2/x² = 0

             x² + 2 = 0

                   x² = -2

There is no inflection point.

(2). Concavity

Apply the second derivative test on either side of the extremum.

\begin{array}{lccc}\text{Test} & x < 1 & x = 1 & x > 1\\\text{Sign of f''} & + & 0 & +\\\text{Concavity} & \text{up} & &\text{up}\\\end{array}

The function is concave up on (0, ∞).

6 0
3 years ago
Can you help me find x?
kozerog [31]

Answer:

Im 99 percent sure its b or c

Step-by-step explanation:

but wait for the other kid to answer

3 0
3 years ago
Christopher read 4 books in 2 months. What was his rate of reading in books per<br> month?
dangina [55]
Christopher read 2 books each month which mean 4 books in 2 months
8 0
3 years ago
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