3 years ago

Find the perimeter of the window. Round 25cm to the nearest tenth

Mathematics

1 answer:

abruzzese [7]3 years ago

5 0

Answer:

Step-by-step explanation:

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If 2 is one root of the equation 4x3 + kx - 24 = 0, then the value of k is

Leokris [45]

Answer:

Step-by-step explanation:

We are given the equation:

$\displaystyle 4x^3 + kx - 24 = 0$

And that x = 2 is a root. And we want to determine the value of k.

By definition, since x = 2 is a root of the equation, when x = 2, the equation must equal zero:

$\displaystyle 4(2)^3 + k(2) - 24 = 0$

Solve for k:

$\displaystyle \begin{aligned} 4(2)^3 + k(2) - 24 & = 0 \\ \\ 32 + 2k - 24 & = 0 \\ \\ 2k + 8 & = 0 \\ \\ k & = - 4\end{aligned}$

Hence, the value of k is -4.

In conclusion, our answer is B.

3 0

3 years ago

What is the maximum or minimum value? f(x) = -(x - 8) ^ 2 - 25

Rina8888 [55]

Answer:

You have a maximum when the parabola opens down (-x^2), and a minimum when it opens up (+x^2). In your case, it opens down because of the -. That is the special notation, the vertex of the parabola is already there.

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2 years ago

From Monday through Friday, Earl works in the bookstore on 2 days and in the tutoring center on another . On Saturday and Sund

Gennadij [26K]

Answer:

Earl would work 0.035%

Step-by-step explanation:

6 0

3 years ago

ANSWER PLEAZE I MARK AS BRAINLIST ❗️❗️❗️❗️

likoan [24]

Answer:

I have to say d,e,and b

Step-by-step explanation:

Hope this helps!!

6 0

3 years ago

Read 2 more answers

Write the domain of Y= x+1/ (x+2)(x+10)

mojhsa [17]

(-∞,-10)∪(-10,-2)∪(-2,∞)

$\left\{x|x\ne-2,-10\right\}$

Both are correct.

4 0

3 years ago