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4 years ago

Can anyone tell me if these answers are right?

Mathematics

1 answer:

k0ka [10]4 years ago

8 0

Answer:

Ummm. 1 & 3 look good double check 2

Step-by-step explanation:

HELPFUL?

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Can someone help me in question 28 please

AnnyKZ [126]

Answer: You would get 1 for the first section

Step-by-step explanation: you square whatever number is the x then you cube the x.

6 0

3 years ago

What is the value of x? 68 4x + 12 17 15 32 8

Marianna [84]

Answer:

k12

Step-by-step explanation:

4 0

3 years ago

Find the measure of angle A (please help!!!)

mel-nik [20]

Answer: 41 degrees

Step-by-step explanation:

so, we know that a triangle is 180 degrees. since we know that one angle is 80 degrees, we can subtract that from the equation. now, we are trying to find what X is so that we can find the angle. here is how i did it:

i rewrote it and removed the parentheses.

4x + 1 + 4x + 19 = 100

then, i collected like terms and calculated it.

8x + 20 = 100

then, i moved the constant to the right.

8x = 100 - 20

then, i simply calculated it.

8x = 10

solution: x = 10

so, we just insert X into the angle for A. that gets us 4(10) + 1 = angle A

40 + 1 = angle A, hence angle A = 41 degrees.

7 0

3 years ago

Solve the equation below for y. 5/6y = 12

mestny [16]

The answer is 5/72 you would just divide 5/6 by 12 hope this helped

4 0

3 years ago

Find the point of diminishing returns (x comma y )for the function R(x), where R(x) represents revenue (in thousands of doll

riadik2000 [5.3K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The point of diminishing returns (x , y ) is (11, 21462)

Step-by-step explanation:

From the question we are told that

The function is $R(x) = 10,000 -x^3 - 33x^2 + 800x , \ \ 0 \le x \le 20$

Here R(x) represents revenue (in thousands of dollars) and x represents the amount spent on advertising (in thousands of dollars).

Now differentiating R(x) we have

$R'(x) = -3x^2 +66x + 800$

Finding the second derivative of R(x)

$R''(x) = -6x +66$

at inflection point $R''(x) = 0$

So $-6x +66 = 0$

=> $x= 11$

substituting value of x into R(x)

$R(x) = 10,000 -(11)^3 - 33(11)^2 + 800(11) ,$

$R(x) = 21462$

Now the point of diminishing returns (x , y ) i.e (x , R(x) ) is

(11, 21462)

4 0

3 years ago