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tatiyna
3 years ago
13

I really don't understand number 10 please help

Mathematics
2 answers:
Artemon [7]3 years ago
8 0
For an ordered pair to satisfy a function , it's a must that when you plug x , you get the value of y and vise versa :

y = -6x - 2 

Check for pair ( -1,-8)

y = -6 * -1 -2 = 6 -2 = 4 

y after substitution is not equal to given y ( 8 )

so refused ordered pair.

Check for pair (-3, 16)

y = -6 * -3 -2 = 18 -2 = 16

CORRECT , so this satisfy the function

and so on.


REY [17]3 years ago
4 0
You would plug them in and see if they work. B  and D work
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Yanka [14]
I believe the answer is 18, because 5x3=15, so we can only assume that N is 6x3=18.
5 0
3 years ago
Read 2 more answers
3× at x = 2 evaluate the following
Nat2105 [25]

Answer:

the answer is 6.

Step-by-step explanation:

8 0
2 years ago
Pleeeeese help me as fast as you can!!!
Aleonysh [2.5K]

Answer:

A. y=3x-10

C. y+6=3(x-15)

Step-by-step explanation:

Given:

The given line is 6x+18y=5

Express this in slope-intercept form y=mx+b, where m is the slope and b is the y-intercept.

6x+18y=5\\18y=-6x+5\\y=-\frac{6}{18}x+\frac{5}{18}\\y=-\frac{1}{3}x+\frac{5}{18}

Therefore, the slope of the line is m=-\frac{1}{3}.

Now, for perpendicular lines, the product of their slopes is equal to -1.

Let us find the slopes of each lines.

Option A:

y=3x-10

On comparing with the slope-intercept form, we get slope as  m_{A}=3.

Now, m\times m_{A}=-\frac{1}{3}\times 3=-1. So, option A is perpendicular to the given line.

Option B:

For lines of the form x=a, where, a is a constant, the slope is undefined. So, option B is incorrect.

Option C:

On comparing with the slope-point form, we get slope as  m_{C}=3.

Now, m\times m_{C}=-\frac{1}{3}\times 3=-1. So, option C is perpendicular to the given line.

Option D:

3x+9y=8\\9y=-3x+8\\y=-\frac{3}{9}x+\frac{8}{9}\\y=-\frac{1}{3}x+\frac{8}{9}

On comparing with the slope-intercept form, we get slope as  m_{D}=-\frac{1}{3}.

Now, m\times m_{D}=-\frac{1}{3}\times -\frac{1}{3}=\frac{1}{9}. So, option D is not perpendicular to the given line.

8 0
3 years ago
What’s the height of the can?
kondaur [170]

Answer:

5 inches

Step-by-step explanation:

The formula to find the surface area of a cylinder is A = 2πrh + 2πr²  

Since we need the height we will need to solve for h

  • First we can subtract 2πr² from both sides to get A - 2πr² = 2πrh
  • Then we can divide both sides by 2πr to get h=\frac{A-2\pi r^{2}  }{2\pi r}

Now we can plug in our known values and solve for h

  • Here we were given the diameter, d, however this formula is in terms of the radius, r.
  • The diameter is equivalent to double the radius, d = 2r
  • Therefore the radius is equivalent to half the diameter, r=\frac{1}{2} d
  • Plugging in d to solve for r we get r=\frac{1}{2}(2) which simplifies to r = 1

The two variables for this equation we have no obtained, A = 12π and r = 1, so we can plug them into our equation to solve for the height

  • h=\frac{12\pi -2\pi (1)^{2}  }{2\pi (1)}=h=\frac{12\pi -2\pi  }{2\pi }=\frac{10\pi }{2\pi } =5
  • The height is 5 inches
4 0
3 years ago
Which of the following statements accurately describes the result of a decreasing worker-per-beneficiary ratio in the Social Sec
spayn [35]
The best and most correct answer among the choices provided by the question is the first choice "Fewer taxed workers than beneficiaries means that the system is collecting more money for the money being drawn out. This leaves money in the system and secures benefits for future beneficiaries."<span>

Social Security<span> is funded primarily through payroll taxes called Federal Insurance Contributions Act tax (FICA) or Self Employed Contributions Act Tax (SECA).
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!</span>
8 0
3 years ago
Read 2 more answers
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