Does (2, –2) make the equation y = –2x + –2 true?

Answer:

1/4

Step-by-step explanation:

This is because you want to get x alone, so if you divide -12 on one side you have to do it on the other side, so you get -3/-12 which can be divided by -3 to be simplified to 1/4. Hope this helps!

Answer:

Step-by-step explanation:

-12x = -3

x = 12 : -3

x = 1/4

--------------------

check

-12 * 1/4 = -3

-3 = -3

the answer is good

Answer:

15 seconds

Step-by-step explanation:

Number of seconds taken to print 8 banners = 120 seconds

Number of seconds taken to print 1 banner will be x seconds

Banners           Seconds

8                         120

1                           x

By cross multiplication, we get

=> 120*1/8 = x seconds

=> 120/8 = 15 seconds

It takes 15 seconds to print one banner.

Hope you got it!!

Answer:

v=32

Step-by-step explanation:

23-15=8x4=32

32/4+15=23

3150 miles in 14 hrs

225 mph

hope this helps!

Answer:

6

Step-by-step explanation:

i think this is correct answer

The given question can be solve using quadratic formula.

The correct option is (c) [tex]3x^2 +8x -10=-8[/tex].

Given:

The given equation is,

[tex]x=\dfrac{-8\pm\sqrt{8^2-4(3)(-1)}} {2(3)}[/tex]---------------------------(1)

Write the general quadratic equation.

[tex]ax^2 + bx +c=0[/tex]

Write the quadratic formula.

[tex]x =\dfrac {-b \pm \sqrt{(b^2 - 4ac)} } {2a}[/tex]------------------------------- (2)

Compare equation (1) and (2).

[tex]a=3\\b=8\\c=-2[/tex]

Substitute the value of [tex]a[/tex], [tex]b[/tex] and [tex]c[/tex] in general quadratic.

[tex]3x^2 +8x -2=0[/tex]

Subtract [tex]8[/tex] from each side of above equation.

[tex]3x^2 +8x -2 -8=0-8\\3x^2 +8x -10=-8[/tex]

Thus, the correct option is (c) [tex]3x^2 +8x -10=-8[/tex].

Learn more about quadratic equation here:

https://brainly.com/question/17177510

Answer x =-10

Step-by-step explanation:

:)

Answer:

Step-by-step explanation:

The Rational Root Theorem tells you that potential rational roots are ...

  ±(divisor of constant term)/(divisor of leading coefficient)

Ignoring the fact that all of the coefficients can be reduced by a factor of 2, straightforward application of this theorem suggests possible rational roots might be ...

  ±{1, 2, 4}/{1, 2} = {±1/2, ±1, ±2, ±4} . . . potential roots

Examination of the graph of the function shows the actual roots are ...

  x = -2, -1 (multiplicity 2)

_____

Additional comment

Descartes' rule of signs eliminates positive real roots from the list. (There are no coefficient sign changes, hence no positive real roots.)

Division of the polynomial by 2 gives x³ +4x² +5x +2 = 0, which only suggests rational roots of -2 or -1. The answer to the question of potential roots depends on the extent to which you refine the list above.

The values of k that will cause the system of equations to have no solution is; k = 7 and 21

We are given the simultaneous equations;

6x - 4y = 14

3x - 2y = k

Now, for both equations not to have a solution it means that x and y can't be made to be subjects.

Now, by inspection see see that the left hand side of the second equation when multiplied by 2 gives the left hand side of the first equation.

By implication, for both equations not to have a solution, k must also be multiplied by 2 to give 14.

Thus;

2k = 14

k = 14/2

k = 7

Also, since 21 is 1.5 multiplied by 14, it means that when we make 21 to be k, there will also be no solution.

Read more about simultaneous equations at;https://brainly.com/question/17671517

Answer:

-2, 5, 10, 21

A, B, D, E

The sum of the equation is [tex]9\sqrt{2}[/tex] and it can be determined by using addition and it can be determined by summation rule in the equation.

Equation; [tex]\sqrt{8} +3\sqrt{2} +\sqrt{32}[/tex]

The sum of the equation.

To determine the sum of the equation following all the steps given below.

The sum of the equation is determined by factorizing the equation,

Then,

The sum of the equation is,

[tex]=\sqrt{8} +3\sqrt{2} +\sqrt{32}\\\\= \sqrt{2\times 2\times2 }+ 3\sqrt{2} +\sqrt{2\times 2\times2 \times 2\times2 }\\\\= 2\sqrt{2} + 3\sqrt{2} + 2\times 2\sqrt{2} \\\\= 2\sqrt{2} + 3\sqrt{2} + 4\sqrt{2} \\\\= 9 \sqrt{2}[/tex]

Hence, The required sum of the equation is [tex]9\sqrt{2}[/tex].

For more details about Addition refer to the link given below.

https://brainly.com/question/25996972

Answer:

2x³-2x²-3x-14

Hope it helps you

Answer: Polynomial

Step-by-step explanation:

Answer:

x = 6, y = -3

Step-by-step explanation:

x = -2y

x-y = 9

Substitute x = -2y into the equation.

;(-2y)-y = 9

-3y = 9

y = 9/-3

y = -3

Substitute y = -3 into the equation.

x = -2y

x = -2(-3)

x = 6

Answer:

Triangle Area = (1/2) * base * height

base = 2 * Area / height

base = (2 * 162) / 18

base = 324 / 18

base = 18 meters

Step-by-step explanation:

Answer:

Different ways to answer this question

Step-by-step explanation:

You can do a ratio  of 1:4 apples and 1:5 oranges

Answer:

-103

Step-by-step explanation:

Just subtract

Answer:

-103

Step-by-step explanation:

You add all the numbers then put the negative sign.

Answer:

16 miles

Step-by-step explanation:

let the number of miles driven be = x

Company A = Company B

8 + 0.10x = 0.60x

8 = 0.50x

x = 16

Hi ~ just a quick note:

I just started uploading videos to yt that contains steps to solving a problem. I sometimes share an unlisted video link so you can view it.

https://youtu.be/XhqLj_YOLBM

-Chetan K

To find the number of licorice ropes r that came in the bag, the equation would be r/ 8 = 4.

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

The teacher divides a bag of licorice ropes evenly among the 8 students at the table.

Each student gets 4 licorice ropes to decorate the roof of his or her gingerbread house.

Let the number of licorice ropes that came in the bag be r.

The total number of students = 8

one student gets the licorice ropes = 4

The equation formed

r/ 8 = 4

r = 32

Learn more about equations;

https://brainly.com/question/27056029

The equation to find the number of licorice ropes came in the bag r, is r = 32

The equation to find the total number of licorice ropes, r, that came in the bag, based on the information provided. Each student gets 4 licorice ropes to decorate the roof of their gingerbread house, and there are 8 students.

The total number of licorice ropes can be found by multiplying the number of ropes each student gets (4) by the number of students (8):

Total licorice ropes = Number of ropes per student × Number of students

r = 4 × 8

Simplifying further:

r = 32

To know more about equation here

https://brainly.com/question/29657983

#SPJ3

Answer:

14

Step-by-step explanation:

52,259 divided by 215 is 243.065116279

so we know that the nearest whole number is 243.

243x215 is 52,245

subtract 52,245 from 52,259 which gives you the remainder of 14

Answer:

Step-by-step explanation:

The area of the square is 3 units by 3 units. because the area of a square is side length squared.

side length = 3

side length^2 = 3 * 3 = 9

The area of a circle is much harder to reason out. You could start with the area of a square and use the diameter is 3 units. But the corners are rounded and you don't know off hand what the area of one of them is, let alone all 4. You are given a formula for circles area, but you have no real idea what the formula actually means. Does it take the corner area into account? At the beginning levels, we don't know.

Answer:

The area of the square is 9 aka [tex]3^{2}[/tex]

You can find it easily by just counting the number of squares inside the square, or by counting the number of squares at its length then multiplying it by its width; so 3 x 3 = 9

It wouldn't be as easy to find the area of the circle because you don't have the radius, nor diameter, so basically, no quantitative values could be used to at least guess.

Answer:

The posted photo says the slope is -(3/4).  I'll use that, instead of -2 as written in the question.

Step-by-step explanation:

The slope-intercept form of a straight line equation is y = mx+b, where m is the slope and b the y-intercept (the value of y when x=0).

With a slope of -(3/4), we can write:  y = -(3/4)x + b.

To find b, use the given point (4,-6):

y = -(3/4)x + b

-6 = -(3/4)(4) + b   for (4,-6)

-6 =  -3 + b

b = -3

The line is y = -(3/4)x - 3

The first option.

Answer:

10 eggs for 40 dozens

Step-by-step explanation:

40÷8=5

5*2=10

Our created proportion is 8:2::40:x

Therefore, for 40 dozen cookies, 10 eggs are required.

Hoped this helped.

[tex]BrainiacUser1357[/tex]

Answer:

104 km is further than 70 miles.

Step-by-step explanation:

Using the conversion table, we can tell that 1 km = 0.62 miles. Now, let's see which is bigger.

Conclusion:

We can clearly see that 104 km is further than 70 miles.

Hoped this helped.

[tex]BrainiacUser1357[/tex]

Answer: i cant really see the homework

Step-by-step explanation:

x^2 + 6xy + 8y2

4x^2 + 3xy + 2y^2 - 5x^2 + 2xy + 6y^2

= 4x^2 + 3xy + 2y^2 + -5x^2 + 3xy + 6y^2

Combine like terms:

= 4x^2 + 3xy + 2y^2 + -5x^2 + 3xy + 6y^2

= (4x^2 + -5x^2) + (3xy + 3xy) + (2y^2 + 6y^2)

= -x^2 + 6xy + 8y^2

Answer:

Step-by-step explanation:

Conclusion:

Therefore, the perimeter in terms of n is 8n - 4.

Hoped this helped.

[tex]BrainiacUser1357[/tex]

its A

Step-by-step explanation:

Answer:

Step-by-step explanation: