1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex787 [66]
3 years ago
11

Marcie solved the following inequality, and her work is shown below:

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0

When dividing an inequality with a negative value , the inequality sign changes direction.

The original Less than or equal to sign should heave been changed to greater than or equal to.

The answer is: When dividing by −8, she did not change the direction of the sign.

You might be interested in
Please answer the question below:​
Readme [11.4K]

Answer:

It's letter b

Step-by-step explanation:

I hope this help

4 0
3 years ago
What is the slope of a line that is parallel to the line represented by the equation 3x+4y=12?
mash [69]

Slope-intercept form is:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

(there is probably another way to do this, but I will be doing it this way)


Isolate the "y" in the equation

3x + 4y = 12       Subtract 3x on both sides

4y = 12 - 3x        Divide 4 on both sides

y=3-\frac{3}{4}x  or   y=-\frac{3}{4} x+3   The slope is -3/4


For lines to be parallel, they have to have the SAME slope. The given line's slope is -3/4, so the slope of the parallel line is also -\frac{3}{4}

8 0
3 years ago
Help plssssssssssssssssssssss
Ilia_Sergeevich [38]

Answer:

Then the solution is (4, 6).

Step-by-step explanation:

Let's use the substitution method:

First multiply the second equation by 4, obtaining 4y = -2x + 32.

Now substitute (-2x + 32) for 4y in the first equation:

3x + (-2x + 32) = 36, or

3x - 2x + 32 = 36. or

x = 4.

If x = 4, then the second equation yields y = (-1/2)(4) + 8, or

y = -2 + 8, or y = 6

Then the solution is (4, 6).

Check, using the first equation:

Does 3(4) + 4(6) = 36?  Does 12 + 24 = 36?  YES

 

7 0
3 years ago
Evaluate the function: f(x)= 3x - 5; f(-1)
anastassius [24]

Answer:

-8

Step-by-step explanation:

f(x)=3x-5

f(-1)=3(-1)-5=-3-5=-8

7 0
3 years ago
Please help me with Part C of this question!!!
anzhelika [568]

Answer:

  a. 3/4 inches per minute

  b. -1 1/8 inches per minute

  c. B is fastest; 1 1/8 is more than 3/4

Step-by-step explanation:

A <em>change</em> is a <em>difference</em>. A <em>rate of change</em> is <em>one difference divided by another</em>, usually the change in y-value divided by the change in x-value.

__

<h3>a.</h3>

The change in elevation is the difference between the elevation at the end of the period (6 inches) and the elevation at the beginning of the period (3 inches). The change in time period is the difference between the end time (8 min) and the beginning time (4 min).

  change in elevation per minute = (6 -3 inches)/(8 -4 min)

  = (3 inches)/(4 min) = 3/4 inches/minute

__

<h3>b.</h3>

Similarly, ...

  change in elevation per minute = (3 -7 1/2 inches)/(18 -14 min)

  = (-4 1/2 inches)/(4 min) = -1 1/8 inches/minute

__

<h3>c.</h3>

We know that 3/4 is more than -1 1/8, but when we talk about the "fastest rate of change", we're generally interested in the magnitude--the value without the sign. That means we understand a rate of change of -1 1/8 inches per minute to be "faster" than a rate of change of 3/4 inches per minute.

The rate of change from Part B is fastest. 1 1/8 inches per minute is more than 3/4 inches per minute.

6 0
2 years ago
Other questions:
  • HELP PLEASE I NEED THIS DONE ASAP
    8·1 answer
  • PLEASE HELP!!!! What is the smallest degree of rotation that will map a regular 20-gon onto itself?
    11·1 answer
  • A line through (-1,1) and (2,3) in slope intercept form
    12·1 answer
  • What is the volume to the nearest tenth of cubic inch.
    14·2 answers
  • John, Rick, and Molli can paint a room working together in 6 hours. Alone, John can paint the room in 12 hours. If Rick works al
    13·1 answer
  • Select the recursive rule for the sequence. Then write the next 3 terms of the sequence.
    15·1 answer
  • Write an algebraic expression for 14 more than the difference of r and s.
    12·1 answer
  • A recipe calls for 2 1/4 cups of milk. If Jamal wants to make 2/3 of the​ recipe, how many cups of milk should he​ use?
    7·1 answer
  • 2+3×=2×+3 ---&gt; ×=1<br><br><br> Help please
    6·1 answer
  • What is the measure of angle x?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!