Solve the following system using substitution.
6x + 3y= - 12
y= -2x -6
(3,-12)
no solution
infinitely many solutions
(2,0)

Answers

Answer 1

Answer:

No solution

Step-by-step explanation:

if you replace the y with -2x-6 into the first equation, you will get rid of the x's which it gives you the hint that there is no solution.


Related Questions

7. Which number is not a perfect square?
A. 81
C. 169
B. 125
D. 289

Answers

B. 125 because the square root of 125 is 11.180

Answer:

B. 125

Step-by-step explanation:

square roots:

81 = 9

169 = 13

125 = 11.180..

289 = 17

Determine the given equation is a linear equation write yes or no. If yes, write the equation in standard form.
7n - 8m = 4 - 2m.
Use Standard form

Answers

Answer:

The equation is linear. Standard form:

7n - 6m - 4 =0

Step-by-step explanation:

Linear Equations

The linear equations are identified because all terms form a polynomial of degree 1 or zero (no variable).

The standard form of a linear equation is:

ax+by+cz+d=0

where x, y, z are the variables, and a,b,c are constants.

The equation:

7n - 8m = 4 - 2m

Is linear, both variables have an exponent of 1 and there is an independent term. Moving all terms to the left side:

7n - 8m - 4 + 2m =0

Simplifying:

7n - 6m - 4 =0

Evaluate the function for f(-9 if (x) = 3/5 x + 8

A. 67/5
B. -67/5
C. -13/5
D. 13/5

Answers

Answer:

D

Step-by-step explanation:

f(-9) = 3/5(-9) + 8 = 13/5

Write the quotient as a power

Answers

Answer:

a^20

Step-by-step explanation:

a^21-a^1

a^20

Someone pls help me!!! (7th grade math work) will mark as Brainliest
SHOW WORK PLSSSSKSKSKS

Answers

Answer:

J.    42 =   x         57     100

Step-by-step explanation:

last year won 57 games

this year won 15 games

the difference is 57 - 15 = 42,

this means it drops 42 / 57 = 0.73 (100%)  ≈ 73%

therefore,  the percentage decrease from the given choices is: J

42 =   x  

57     100

What is P in 3 +
p=8




Btw thanks for the help ❤️

Answers

Answer:

5

Step-by-step explanation:

i will make you brainlliest whoever answers this right and will give you points Please help me i am having a hard time
Evaluate 14 + (-8) ÷ 2 · -3.

26
-9
-30
15

Answers

14 + (-8) / 2 x -3

Follow order of operations: divide and multiply from left to right:

-8/2 = -4 x -3 = 12

Now you have 14 + 12

The answer is 26

Answer:

26

Step-by-step explanation:

14+(-8) ÷ 2 (-3)

14+ (-4)(-3)

14+12

26

3y + 8 = I 7
Also can you show me the written steps?

Answers

3y=17-8
3y=9 Divide 9 and 3
Y=3

For a school art project, Kali has 604 square tiles measuring 1 inch on each side. She plans to use the tiles to completely cover the box in the shape of a rectangular prism shown below. (FORMULA: Surface Area = 2lw + 2lh + 2wh) Which statement about Kali's tiles is true? Group of answer choices Kali needs 476 more tiles to completely cover the box. Kali needs 104 more tiles to completely cover the box. Kali will have 534 tiles left after completely covering the box. Kali will have 250 tiles left after comp

Answers

Answer:

Kali needs 104 more tiles to completely cover the box.

Step-by-step explanation:

Length of box =  20 in

Breadth of box = 6 in

Height of box= 9 in

Total surface area of box = 2lw + 2lh + 2wh

Total surface area of box = 2(20)(6) + 2(20)(9) + 2(6)(9)

Total surface area of box = 708 sq. in.

Side of tile = 1 in

Area of 1 tile = [tex]Side^2 = 1^2 = 1 sq. in[/tex]

Area of 604 tiles = 604 sq. in.

Area remain uncovered = 708 - 604 = 104 sq.in.

So, Kali needs 104 more tiles to completely cover the box.

In his​ motorboat, Bill Ruhberg travels upstream at top speed to his favorite fishing​ spot, a distance of 264 ​mi, in 6 hr.​ Returning, he finds that the trip​ downstream, still at top​ speed, takes only 5.5 hr. Find the rate of​ Bill's boat and the speed of the current. Let x​ = the rate of the boat in still water and y​ = the rate of the current.

Answers

Answer:

The values are   [tex]x =  46 miles /hr [/tex]

                            [tex]y = 4 \  miles / hr[/tex]

Step-by-step explanation:

From the question we are told that

   The distance covered is  d =  264 miles

     The time taken is [tex]t_1 =  6 hours[/tex]

     The time taken for the return trip is  [tex]t_2  =  5.5 \ hours[/tex]

Generally during the trip  toward fishing spot , the velocity is mathematically represented as

     [tex]v_t  =  \frac{d}{t_1 } = x - y[/tex]

=>  [tex]v_t  =  \frac{264}{6 } = x - y[/tex]

=>    [tex]x - y  = 44 \cdots 1 [/tex]

Generally during the  return trip  , the velocity is mathematically represented as

      [tex]v_r  =  \frac{d}{t_2}  =  x+ y[/tex]

=>   [tex]v_r  =  \frac{264}{5.5}  =  x+ y[/tex]

=>   [tex]48 =  x+ y\cdots 2[/tex]

add equation 1 and 2

       [tex]2x =  92[/tex]

=>    [tex]x =  46 miles /hr [/tex]

substituting this  into  equation 1

     [tex] 46 - y  = 44 \cdots 1 [/tex]

=>   [tex]y = 4 \  miles / hr[/tex]

n-4=20
What is the answer.?

Answers

Answer:

n=24

Step-by-step explanation:

add 4 to both sides

Answer:

n =24

Step-by-step explanation:

[tex]n-4=20\\\\\mathrm{Add\:}4\mathrm{\:to\:both\:sides}\\n-4+4=20+4\\\\Simplify\\\\n = 24[/tex]

find the equation of the line shown
how do you do this ?

Answers

Answer:

y=1/2x+0.5

Step-by-step explanation:

The slope is 1/2, which you can see by looking at the change of y/x. The y intercept is 0.5, which can be seen on the y axis.

What is the slope of a line perpendicular to the line whose equation is
6x - 5y = -40. Fully reduce your answer.

Answers

Answer:

Slope = - 5/6

Step-by-step explanation:

Step 1:

y = mx + b        Slope Intercept Form

Step 2:

6x - 5y = - 40      Equation

Step 3:

- 5y = - 6x - 40       Subtract 6x on both sides

Step 4:

y = 5/6x - 80      Divide 5 on both sides

Step 5:

m = Slope

Answer:

Slope = - 5/6

Hope This Helps :)

Help me solve this problem please

Answers

Option C, a = (w - 4b )/7 is the correct answer

w = 7a + 4b

7a = w - 4b

a = (w- 4b )/7

Ryan and his brother are at a carnival. They separate from each other at the ferris wheel at 1:00 PM, and they agree that they will each meet back at the ferris wheel from time to time to see whether the other is ready to leave. Ryan checks the ferris wheel every 15 minutes. His brother checks in every 24 minutes. At what time will they meet at the ferris wheel again. (Hint: Don't forget you're looking for a time)

Answers

Answer:

3:00pm

Step-by-step explanation:

The idea hear is to find the least common multiples of 15 and 24

Given that they separated at exactly 1:00pm

the multiples are

15= 15,30,45,60,75,90,105,120

24= 24, 48,72,96,120

the multiples common is 120

Therefore they will meet in 120minute, which is 2 hours time \

hence the time will be 3:00pm

PLEASE HELP!! Brainliest to first answer

Part A: An archer shoots an arrow into the sky where the motion of the arrow can be modeled by the equation() = −5^2 + 20 + 4. Where t is time in seconds and f(t) is height in feet. Find how long it will take the arrow to hit the ground using an algebraic method. Round to the nearest tenth if necessary. Show all of your reasoning used with this algebraic method.

Part B: Using the information in Part A, find how high the arrow will go at its maximum height, and how long it takes for this to occur using an algebraic method. Show all of your reasoning used with this algebraic method. Round to the nearest tenth if necessary.

Answers

Answer:

The arrow will take 4.19 seconds to hit the ground

The arrow will go 24 feet to reach its maximum height and it takes 2 seconds to reach this height

Step-by-step explanation:

The quadratic function is f(t) = -5t² + 20t + 4, where

f(t) is the height in feet

t is the time in seconds

If the arrow hit the ground that means h(t) = 0

→ Substitute h(t) by 0 and use the quadratic formula to find t

∵ h(t) = 0

∴ 0 = -5t² + 20t + 4

→ Switch the two sides

∴ -5t² + 20t + 4 = 0

→ Multiply all terms by -1 to make the coefficient of t² positive

5t² - 20t - 4 = 0

→ The quadratic formula is [tex]t=\frac{-b+-\sqrt{b^{2}-4ac}}{2a}[/tex] , where

a is the coefficient of t²b is the coefficient of tc is the numerical term

∵ a = 5, b = -20, c = -4

∴ [tex]t=\frac{-5+-\sqrt{(-20)^{2}-4(5)(-4)}}{2(5)}[/tex]

∴ [tex]t=\frac{-5+-\sqrt{400+80}}{10}[/tex]

→ Find the values of t in decimal

t = 4.19 seconds OR t = -0.19refused because it is negative

The arrow will take 4.19 seconds to hit the ground

The graph of this quadratic function is a parabola with maximum vertex (h, k), where

h = [tex]\frac{-b}{2a}[/tex]k = f(h)

To find the maximum height and the time taking for this to occur find h and k where k is the maximum height and h is the time for this to occur

∵ f(t) = -5t² + 20t + 4

∵ a = -5 and b = 20

∴ h = [tex]-\frac{20}{2(-5)}=-\frac{20}{-10}=2[/tex]

The time for the maximum height is 2 seconds

→ Now use it to find k

∵ k = f(h)

∴ k = f(2)

∵ f(2) = -5(2)²+ 20(2) + 4

∴ f(2) = -5(4) + 40 + 4

∴ f(2) = -20 + 40 + 4

∴ f(2) = 24

∴ k = 24

The maximum height is 24 feet

The arrow will go 24 feet to reach its maximum height and it takes 2 seconds to reach this height

(25,-14) (-3,7)
determine the slope

Answers

-3/4
y2-y1/x2-x1
7– -14/-3-25=21/-28=-.75=-3/4

which equation matches the graph
A.y=4/3x+6
B.y=3/4x+6
C.4y-3x=12
D.3x-4y=12

Answers

Answer:

B. y=3/4x+6

Step-by-step explanation:

tttttttttttttt

Answer: B

Step-by-step explanation: the y-intercept is always the b in the equation y=mx+b. in this case it’s 6. Then you look at the rise and the run. its 3/4 because you go up 3 units, and to the right 4 units, to get to the next coordinate point.

10 : 35 fraction in simplest from

Answers

- 2/7

What is 10/35 Simplified? - 2/7 is the simplified fraction for 10/35.

-BBBM

What are both of these shaded as?

Answers

Answer:

1 whole and 15/100= 1.15

Step-by-step explanation:

The first box is 1 whole, in total there are 100 squares. All u need to do is count the number of squares

Which equation shows a proportional relationship between x and y?

y = 16

y = 7x

y=−7x−2

y = 9x + 1

Answers

The equation that shows a proportional relationship is y = 7x.

How to find the equation that is proportional?

Two variables have a proportional relationship if all the ratios of the variables are equivalent.

In other words, a proportional relationship is one in which two quantities vary directly with each other.

Therefore, a proportional relationship can be represented as y = kx.

where

k = constant of proportionalitythe variables are x and y

Therefore, y varies directly as x in a proportional relationship.

Hence, the equation that shows proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.

learn more on proportional relationship here: brainly.com/question/20213987

#SPJ1

Answer:

y = 7x

Step-by-step explanation:

the proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.

⚠️⚠️ What’s the coordinate numbers for A and B ⚠️⚠️

PLEASEE I WANNA FINISH

Answers

Answer:

A (-2,-3) B (3,-3)

Step-by-step explanation:

I took math in high school

Answer:

The coordinate numbers are A (-2,-3) B(3,-3)

help asap i need this todayy

Answers

y = 2/3 , hope this helps !

Corresponding angles?


Helo im trying to pass

Answers

Answer:

Corresponding angles are

1 and 3

or 5 and 7

or 2 and 4

or 6 and 8

Step-by-step explanation:

For a school fund-raiser, students sold T-shirts with the school logo for $14. PLEASE HELP!
They sold sweatshirts with the school logo for $20.
They sold 233 pieces of clothing and raised $3,748.
How many of each type of shirt did they sell at the fund-raiser?
Let x = the number of T-shirts sold.
Let y = the number of sweatshirts sold.

Answers

Answer:

The 3 problem

Step-by-step explanation:

Answer:

The answer is C) x+y = 233, 14x + 20y = 3748

Step-by-step explanation:

x(number of t-shirts sold) + y(number of sweatshirts sold) = 233 (total number of pieces of clothing sold)

14x (14 is the cost of each t-shirt and since x = number of t-shirts sold then it is 14x or 14 multiplied by number of t-shirts sold) + 20y (20 is the cost of each sweatshirt and since y = number of sweatshirts sold then it is 20y or 20 multiplied by number of sweatshirts sold) = 3748 (total of money raised)

choose the graph of the translated parent function f(x)=cos(x) where it is translation 3 units up

Answers

Answer:c

Step-by-step explanation:move up 3 units on the y axis and create the graph

What role does Geometric formulas have in our lives??

Answers

Geometry helps us in deciding what materials to use, what design to make and also plays a vital role in the construction process itself. Different houses and buildings are built in different geometric shapes to give a new look as well as to provide proper ventilation inside the house.

Hope that helped :)

what is 5280 divided by 60

Answers

Answer:

88

Step-by-step explanation:

which polynomial function has zeros when x= -2, 3/4, 5

Answers

Answer: f(x)=(x+2)(4x-3)(x-5)

Step-by-step explanation:

Alg2.2.5 practice 2

Polynomial function has zeros when  x=[tex]-2, \frac{3}{4} , 5[/tex] is

[tex]4x^3-15x^2-31x+30[/tex]

Given :

polynomial function has zeros when x= -2, 3/4, 5

Lets write the zeros in factor form

If 'a' is a zero , then factor is (x-a)

The given zeros are [tex]-2, \frac{3}{4} , 5[/tex]

lets write all the three zeros in factor form

[tex](x-(-2)) (x-\frac{3}{4})(x-5)\\(x+2)(4x-3)(x-5)[/tex]

Now multiply the parenthesis to get the polynomial

[tex]\left(x+2\right)\left(4x-3\right)\left(x-5\right)\\\left(4x^2+5x-6\right)\left(x-5\right)\\4x^2x+4x^2\left(-5\right)+5xx+5x\left(-5\right)-6x-6\left(-5\right)\\combine \; like \; terms\\4x^3-15x^2-31x+30[/tex]

polynomial function has zeros when x= -2, 3/4, 5 is

[tex]4x^3-15x^2-31x+30[/tex]

Learn more : https://brainly.com/question/21970844

Solve:
x/4 - x/8 = 5

Answers

Answer:

x=40

Step-by-step explanation:

x/4 - x/8

LCM of 4,8=8

x/4x2/2 - x/8=5

2x/8 - x/8 =5

x/8=5

transpose

x=5x8

x=40

hope this helps

please mark as brainliest

Other Questions
Which values of a, b, and c represent the answer in simplest form?5/8 divided by 3/8 = a b/cO a=1, b=3, C= 2O a = 1,b=40, C= 24O a=1,b= 16, C = 24O a= 1, b = 2, C= 3 What do people do when they are involved in affective conflictA- maintain focus on their job at handB- allow compromise C- learn new ideas from each other D- focus on their emotional responses Y= 4x +3, 4x + y =3 are they parallel or perpendicular 5x - 26 = x + 50, then the value of x i 20 pointsA parallelogram has one pair of parallel sides.True or false If a quadrilateral is a rectangle then it is also a square. * True or FalseA parallelogram always has four congruent sides.True or FalseIf a quadrilateral is a square then it is also a rectangle. * True or FalseIf a quadrilateral is a trapezoid then it is also a parallelogram.True or False 2. True or false?Forensic entomology uses the study of insects to help criminal investigations. Plz help on this math question Brainliest To first answer 20 x (-124) x 5 find the value Meredith scores a 72% on her quiz. Shemisses 7 questions. What is the change inher score in percentage points for eachquestion she gets incorrect? Here is a riddle:I am thinking of two numbers that add up to 5.678.The difference between them is 9.876.What are the two numbers? What is the highest elevation point in Europe The graph represents the rate of two machines that fill water barrels. One machine has already filled 30 water barrels before the faster machine starts. According to the graph, the two machines will have filled a certain number of water barrels at about the same time. What is that number of barrels?A) 45 barrels B) 50 barrels C) 80 barrels D) 90 barrels explain how miscommunication can be a problem What is the primary purpose of the mitochondria in a cell?A. They store genetic informationB. They convert glucose into ATP energy the cell can useC. They trap sunlight and use the energy to make foodD. They ship proteins across the cell membrane If carbohydrate is not available, what can be used for energy? What is the answer to this problem? How did technology make WWI different from previous conflicts?Technology meant that generals were able to control the fighting fullyB) The destructive nature of the new weapons meant that war was over quicklyC) Technology meant less men were required to fight in the warD) The destructive technology meant more casualties of war answer plss. Money here. Organizing sentences around a central idea creates a/anA. ComparisonB. Supporting DetailC. IntroductionD. Paragraph The arrival of Aryan people in India led to:O A. the spread of the Sanskrit language.B. the rise of the Harappan civilization.C. the decline of Hinduism.D. the end of the Indian caste system.SUBMIT