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drek231 [11]
2 years ago
9

Please help me someone with this problem

Mathematics
1 answer:
Y_Kistochka [10]2 years ago
7 0
I would help you but the picture is blurry
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The graph of the function f(x) = –(x + 6)(x + 2) is shown below.Which statement about the function is true?
LekaFEV [45]

Answer:

The first statement is true.

Step-by-step explanation:

The function is f(x) = - (x + 6)(x + 2)  

⇒ f(x) = - x² - 8x - 12

Now, condition for a function f(x) to be increasing at x = a is f'(a) > 0.

Now, f(x) = - x² - 8x - 12

⇒ f'(x) = -2x - 8 {Differentiating with respect to x}

Now, f'(a) = -2a - 8 {Here a can be any real value}

And, the condition for increasing function at x = a is  

- 2a - 8 > 0

⇒ - 2a > 8

⇒ a < - 4

Therefore, the first statement is true i.e. the function is increasing for all real values of x where  x < – 4. (Answer)

4 0
3 years ago
What is the percent change of 20 - 60?
Sergeeva-Olga [200]
40% is the answer ...
3 0
3 years ago
Read 2 more answers
PLEASE HELP !!!
katen-ka-za [31]

Answer:

final cost of 3 pounds: <u>  8 dollars  </u>

final cost of p pounds: <u>   3.75p - 3.25  dollars  </u>

Step-by-step explanation:

Each pound costs $3.75, so 3 pounds cost 3*3.75 = 11.25 dollars. Subtract off the $3.25 to get the final cost to be 11.25-3.25 = 8 dollars. This takes care of the first part.

For the second part, the expression for the final cost is 3.75p - 3.25; where the 3.75p is the cost before the coupon is applied. If you plugged p = 3 into that expression, you should get 8 as a result. The variable p is some positive whole number. It's a place holder for the number of pounds of apples.

4 0
3 years ago
15 1/3 - 10 11/12 what does this equal help Mee plzzz and thanks
podryga [215]
The exact for is 53/12
Decimal form is 4.416
Mixed number 4 5/12
I hope I helped
4 0
3 years ago
f(x)=5xf(x)=5x and g(x)=x−3g(x)=x−3 Step 1 of 2 : Find the formula for (f+g)(x)(f+g)(x) and simplify your answer. Then find the
Sergeu [11.5K]

Answer:

(f+g)(x)=6x-3

domain is (-∞,∞)

Step-by-step explanation:

f(x)=5x

g(x)=x-3

(f+g)(x)=f(x)+g(x)

to find f+g(x) we add both function

Substitute f(x) and g(x)

(f+g)(x)=f(x)+g(x)

(f+g)(x)=5x+x-3=6x-3

(f+g)(x)=6x-3

Domain is the set of x values

here there is no restriction for x

so domain is the set of all real numbers

domain is (-∞,∞)

7 0
3 years ago
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