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3 years ago

-8(17-12) What is the value of -2(8-(-2))? 0-4 0-2 O 2 O 4

Mathematics

1 answer:

xenn [34]3 years ago

3 0

Answer:

The first one is -40. The second one is -20.

Step-by-step explanation:

With the 1st one you do 17-12 which is 5 and 5*-8 is -40. With the 2nd one, 8-(-2) is 10 and 10*-2 is -20.

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SOMEONE PLEASE HELP ME! I promise i will mark brainlest, but i need the right answer for this. help is much appreciated <3 wh

dem82 [27]

Answer:

The middle one because there is only 1 value of y for every value of x.

5 0

3 years ago

Jenna is buying four new shirts at $20 each. Which of the following is NOT a way to write a calculation for how much money Jenna

suter [353]

Answer:

20/4

Step-by-step explanation:

Because that would mean 20 divided by 4 which wouldn't accumulate to 80

8 0

3 years ago

Given the function f(x) = 2-4, determine the slope of the tangent line of f at

AlladinOne [14]

Answer:

Slope of the tangent line at x=-1

$(\frac{dy}{dx})_{x=-1} = e^{-5}$

Step-by-step explanation:

Explanation:-

Given function

y = f(x) = e ˣ⁻⁴ ...(i)

Differentiating equation (i) with respective to 'x' , we get

$\frac{dy}{dx} = e^{x-4} \frac{d}{dx} (x-4)$

$\frac{dy}{dx} = e^{x-4} (1)$

Slope of the tangent line

$(\frac{dy}{dx})_{x=-1} = e^{-1-4} = e^{-5}$

4 0

3 years ago

Mrs. Hinojosa had 75 feet of ribbon. If each of the 18 students in her

Sever21 [200]

Answer:

4 feet 2 inches

Step-by-step explanation:

Total Ribbon = 75 feet

Total Students = 18

If equally cut, each student will get the total divided by number of students, that would be:

75/18

That would be:

$\frac{75}{18}=\frac{25}{6}=4\frac{1}{6}$ feet per student

Now, we need the fractional part as inches.

We know 12 inches is 1 feet, so 1/6th feet is:

$(\frac{1}{6})*12=2$

The fractional part is "2 inches"

Thus,

each piece would be 4 feet 2 inches

5 0

3 years ago

Can someone help me with this math? explain your answer too.

Contact [7]

Answer:

1. Consistent independent.

2. Coincident

3. Inconsistent.

Step-by-step explanation:

4x + y = 8

x + 3y = 8 Multiply this equation by -4:

-4x - 12y = -32

Adding this to the first equation:

-11y = -24 giving y = -24/-11 = 2.18

Substituting in the first second equation:

x + 3(2.18) = 8 giving x = 1.46.

So this system of equations has roots (1.46, 2.18) and is consistent independent.

-4x + 6y = -2

2x - 3y = 1 Multiply this by -2:

-4x + 6y = -2

So these 2 equations are the same and will give the same graph on the coordinate plane, and so has:

Infinite solutions and is coincident.

5x - 2y = 4

5x - 2y = 6

We can see immediately that this system of equations has NO Solutions.

If we subtract the 2 equations we get:

0 = -2 which is of course, absurd.

Classification Inconsistent.

5 0

3 years ago