Is the following relation a function?

Answer:

  57.95

Step-by-step explanation:

The area of the floor is (6.1 ft)(9.5 ft) = 57.95 ft². This will be the minimum that Marcus will want to purchase.

If we assume that tiles come in pieces 1 ft square, then Marcus will need a minimum of 58 square feet.

If Marcus does not want to piece together any tiles at the edges, he will want to purchase 10×7 = 70 square feet of tile.

Answer:

I guess that you want to find the profit:

We have two equations:

the cost equation:

C(x) = -0.1*x^2 + 100.

And the selling equation, that is a vertical stretch of the cost equation by a factor of 1.4:

S(x) = 1.4*C(x) = 1.4*( -0.1*x^2 + 100.) = -0.14*x^2 + 140

Now, whit those two equations we can find the profit equation, that is defined as the difference between the selling price, and the cost:

P(x) = S(x) - C(x) = 1.4*C(x) - C(x) = (1.4 - 1)*C(x) = 0.4*C(x).

Then the profit is 0.4 times the initial cost.

P(x) = 0.4*( -0.1*x^2 + 100.) = -0.04*x^2 + 40

Answer:

D. S(C(x))= –0.14x^2+140; $108.50

Step-by-step explanation:

Cause the others are wrong

Correct question is;

Ms. Ironperson lives due east from the shawarma mediterran grill and Mr. Thoro lives due south. Both leaves at the same time, ms.Iron person traveling at 50 mph and mr. Thoro at 60 mph. Calculate when they would be 400 miles apart and how long would it take to happen

Answer:

They will be 400 miles apart when Ms. Ironperson has covered 256 miles and Mr. Thoro has covered 307 miles after 5.12 hours

Step-by-step explanation:

Since Ms. Ironperson lives due east from the shawarma mediterran grill and Mr. Thoro lives due south,then the distance between them will be the hypotenuse of a right angle triangle.

Now, we are told that Ms. Ironperson is traveling at 50 mph and that Mr. Thoro is traveling at 60 mph.

Thus, if we want to find when they would be at 400 miles apart, it means we have to find the distance Ms. Ironperson and Mr. Thoro would have covered after a time "t".

Thus,

Ms. Ironperson covered 50t miles

Mr. Thoro covered 60t miles

Therefore, since their location forms a right angled triangle, then we can use pythagoras theorem and we have;

(50t)² + (60t)² = 400²

This gives;

2500t² + 3600t² = 160000

6100t² = 160000

t² = 160000/6100

t = √(160000/6100)

t ≈ 5.12 hours

Thus, for Iron person, distance covered is: 50 × 5.12 = 256 miles

For Mr. Thoro, distance covered is: 60 × 5.12 ≈ 307 miles.

They will be 400 miles apart when Ms. Ironperson has covered 256 miles and Mr. Thoro has covered 307 miles after 5.12 hours

Answer:

3x^3+ 12x^2-15x

Step-by-step explanation:

First, you would have to distribute the 3x to everything in the parentheses. So you can write it out as (3x*x^2)+(3x*4x)+(3x*5). Solving this will give you the answer. We'll start off with (3x*x^2). Because we are MULTIPLYING, this part will equal to 3x^3. There is ONE x with 3x (think of it as 3x^1) and 2 x's in x^2, having a total of 3 x's, or x^3. Since the 3 is being multiplied as well, we can write it as 3x^3.

Second, we will solve (3x*4x). We are multiplying, so first we multiply 3*4 and then x*x. 3*4 is 12 and x*x is x^2.  There are 2 x's being mutipled by each other, so the x becomes squared. Now we finish and multiply 12*x^2 wich is 12x^2.

Lastly, we solve (3x*5). 3x is being multiplied 5 times which gives us 15x.

I hope this helped :)

Answer:

GH=5

HI=5

IJ=5

JK=9

Step-by-step explanation:

GK=24

HJ=10

GH=HI=IJ.

Let GH, HI, IJ be x

therefore,

HI+IJ=10

=>x+x=10

=>2x=10

=>x=10/2

=>x=5

HI=IJ=GH=5

GH+HI+IJ+JK=GK

=>5+5+5+JK=24

=>15+JK=24

=>JK=24-15

JK=9

Answer:

12 ft^2

Step-by-step explanation:

48 inches needs to be converted to ft

12 inches = 1 ft

48/12 = 4 ft

36 inches needs to be converted to ft

12 inches = 1 ft

36/12 =3 ft

Find the area

4 ft * 3 ft = 12 ft^2

Answer:

107.500

Step-by-step explanation:

5.450.000-75.000=5.375.000

5.375.000:12 1/2=5.375.000:25/2=5.375.000*2/25=430.000

430.000:4=107.500

+ and - ,

*  and :

are inverse  operations

Where it is an operation and the result is a number , we have to do the inverse operation for finding the initial number.

verifying :

107.500*4*12 1/2+75.000=5.450.000

Answer:

x=-4

Step-by-step explanation:

Filp the sign

The reflection of the line x = 4 will be x = -4.

Reflection is basically a mirror image of the shape, in which the image of a given figure changes accordingly to a given line or axis.

The given equation of line,

x = 4.

The reflection of the line x = 4 will be x = -4.

The reflected graph is shown below.

To learn more about Reflection on:

https://brainly.com/question/15487308

#SPJ2

Answer:

A is the true proportion

Step-by-step explanation:

3/4 = 9/12 = 36 = 36

Answer:

True

Step-by-step explanation:hi

Answer:

108

Step-by-step explanation:

There are 31 students in the pep band. One third of students in the marching band signed up, and 5 changed their mind. 31 + 5 = 36, and 36 x 3 = 108. 36 is one third of 108 and there are 108 students in the marching band.

Answer:

5 units

Step-by-step explanation:

Annie is located at (6,-20) and Barbara is located at (1, 14) and they meet at a point equidistant to their current locations.

This means that they have to meet at the midpoint between their two locations. Let the coordinate of the midpoint be (x,y) hence:

[tex]x=\frac{x_1+x_2}{2}=\frac{6+1}{2} =\frac{7}{2}[/tex]

[tex]y=\frac{y_1+y_2}{2}=\frac{-20+14}{2} =-3[/tex]

The point at which they met is at (7/2, -3). Charlie location is at (7/2, 2). Hence the distance upward that they have to move = 2 - (-3) = 5 units

They have to move 5 units upwards

Answer:

D.

Step-by-step explanation:

p=3s

p=3(16)

p=48 pencils

Answer:

k = 2

Step-by-step explanation:

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step 1: Replace variables

[tex]\frac{(k+3)-2}{3+1} =\frac{3}{4}[/tex]

Step 2: Combine like terms

[tex]\frac{k+1}{4} =\frac{3}{4}[/tex]

Step 3: Solve for k

k + 1 = 3

k = 2

Answer:

k=2

Step-by-step explanation:

The slope is 3/4

The slope formula is (y1-y2)/(x1-x2)

We can plug the values in

(2-k-3)/(-1-3)=3/4

Combine like terms

(-1-k)/-4=3/4

Cross multiply

-12= -4 - 4k

-8=-4k

k=2

Hope this helps!

Answer:

x=49

Step-by-step explanation:

Let's solve your equation step-by-step.

1

8

x−

49

8

=0

Answer:

x=49

Answer:

30.2

Step-by-step explanation:

5.2 - 3y + 7

Let y= -6

5.2 -3(-6) +7

5.2 +18 +7

30.2

Just substitute and solve.

5.2 - 3(-6) + 7

5.2 - (-18) + 7

23.2 + 7

30.2

Best of Luck!

Answer: 130°

Step-by-step explanation:

Concept to know:

Linear pair: two angles that forms one line

One line: 180°

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

x+50=linear pair

x+50=180

     x=130°

Hope this helps!! :)

Please let me know if you have any question

Answer:

The total cost is $850

Step-by-step explanation:

From the function

C = 2T + 250

where

T is the number of T-shirts they purchase.

If the the shop purchases 300 T-shirts, then it means

T = 300

substituting into the function, we have

C = 2(300) + 250

C = 600 + 250

c = $850

Answer:

Hey there!

The equation is y=-3/4x+6. (Note the 3/4 is negative because the line has a negative slope.

Let me know if this helps :)

Answer:

[tex]\huge \boxed{y=-\frac{3}{4}x+6 }[/tex]

Step-by-step explanation:

Two points are (0, 6) and (8, 0)

Finding the slope.

m = (y2-y1)/(x2-x1)

m = (0-6)/(8-0)

m = -6/8

m = -3/4

The y-intercept is 6.

y = mx + b

m = slope

b = y-intercept

y = -3/4x + 6

Answer:

Answer : -69

Step-by-step explanation:

-5 - 3x - x- (-16)

= -5 -3 ×(20) - 20 -( -16)

= -5 - 60 -20 +16

= -85 + 16

= -69.

Hope it helps,

Mark it as Brainliest.

Answer:

A

Step-by-step explanation:

Since ΔDEF has only been rotated, we know that ΔDEF ≅ ΔJKL. Using CPCTC, we can see that the answer is DF = JL which is A.

Answer:

x=0

Step-by-step explanation:

7x+(-7)=9x-7

Add 7 to each side

7x+(-7)7=9x-7+7

7x = 9x

Subtract 7x from each side

7x-7x = 9x-7x

0 = 2x

Divide by 2

0 = 2x/2

0 = x

Hello,

I hope you and your family are staying safe and healthy!

Answer: 0

Step-by-step explanation:

[tex]7x + (-7) = 9x - 7[/tex]

[tex]7x - 7 = 9x - 7[/tex]

Now susbtract [tex]9x[/tex] from both sides

[tex]7x -7 - 9x = 9x - 7 - 9x\\-2x - 7 = -7[/tex]

Then add 7 to both sides

[tex]-2x - 7+7=-7+7\\2x=0[/tex]

[tex]x = \frac{0}{-2} \\x = 0[/tex]

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

If you find my answer helpful, please give it 5 stars and press the heart. Thanks!

Answer:

The answer is 1

Step-by-step explanation:

You replace the x with 4 making it 4-2/2=1

Answer:

Commutative Property  

Associative property

Additive inverse  

Identity property

Step-by-step explanation:

In a  commutative property multiplication and addition which posses commutative property takes place without considering the order of arrangement of data

12.2 + 18.6 + –4.3 + (–18.6)

12.2 + –4.3 + 18.6 + (–18.6)

The second step results into the presence of a commutative property.

The next step 12.2 + –4.3 + [18.6 + (–18.6)] is an associative property because here, re-grouping of numbers which gives the same result takes place

[18.6 + (–18.6)] is an additive inverse since the result is zero. Additive inverse occurs when the addition of a number to another number results into zero

12.2 + –4.3 + (0)   is an Identity property

Identity property occurs when the addition of any number with zero eventually resulted into that number.

Answer:

Commutative Property  

Associative property

Additive inverse  

Identity property

Step-by-step explanation:

Answer:

4(1/2x+6)=48

Step-by-step explanation:

half a number= 1/2x

is= equal

Answer:

35

Step-by-step explanation:

Brianna=x

Justin=x+10

Hannah=2(x+10)

x+x+10+2x+20=130

4x+30=130

4x=130-30

4x=100

x=25

Justin =x+10 = 25+10=35

Answer:

(2, 3)

Step-by-step explanation:

First of all, let us understand what does a linear system mean.

A linear system means a mathematical model that contains more than one linear equations.

Linear equations mean maximum power of the variable is 1.

Now, how to solve for system of linear equations.

There are two methods to solve the system:

1. From equations: A linear equation is generally written as:

[tex]Ax+By+C=0[/tex]

Two such equations are solved for the values of [tex]x[/tex] and [tex]y[/tex].

2. From Graph:

The intersecting point of the graphs of the equations is the solution of the system of linear equations.

Now, let us consider the given graph of two lines.

The intersecting point is (2, 3)

Where 2 is the value of x coordinate and

3 is the value of y coordinate.

So, solution is (2, 3)

Please refer to the attached image for the answer.

We want to see the solution of a system of equations by looking at its graph, we can see that the solution is the point (2, 3)

A system of equations is a group of equations that must be solved simultaneously. When graphed, these solutions appear as intersections between the curves that represent each equation.

So for the graphed system, the solution is just the intersection between the two lines, we can see that it happens at the point (2, 3).

If you want to learn more, you can read:

https://brainly.com/question/19249122

Solution:

Given, x=-3, y=6 and z=-4

Putting the value in the given equation: 2z-3y+4x, we will get,

=2(-4)-3(6)+4(-3)

=-8-18-12

=-38

Answer:

x = 40

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180

2x + x + [tex]\frac{3x}{2}[/tex] = 180 ( multiply through by 2 to clear the fraction )

4x + 2x + 3x = 360 , that is

9x = 360 ( divide both sides by 9 )

x = 40

Answer:

0

Step-by-step explanation:

Given

a + 7(a + b) - 8(a + b) + b ← distribute both parenthesis

= a + 7a + 7b - 8a - 8b + b ← collect like terms

= a + 7a - 8a + 7b - 8b + b

= 0

Answer:

0

Step-by-step explanation:

a+7a+7b-8a-8b+b

combining like terms

a+7a-8a+b+7b-8b

8a-8a+8b-8b

0