ASAP! PLEASE help me with this question!

Answer:

$192

Step-by-step explanation:

The cost function is given as:

C(x)=18x+240

The price function is given as:

p(x)= 90 - 3x

The revenue R(x) is the product of the price and the number of products. It is given by:

R(x) = xp(x) =  x(90 - 3x) = 90x - 3x²

The profit P(x) is the difference between the revenue and the cost of production. Therefore:

P(x) = R(x) - C(x) = 90x - 3x² - (18x + 240) = 90x - 3x² - 18x - 240

P(x) = -3x² + 72x - 240

The standard equation of a quadratic equation is ax² + bx + c. The function has a maximum value at x = -b/2a

Since  P(x) = -3x² + 72x - 240, the maximum profit is at:

x = -72/2(-3) = 12

at x = 12, the profit is:

P(12) = -3(12)² + 72(12) - 240 = -432 + 864 - 240 = $192

Answer:

[tex]d = 8t[/tex]

Step-by-step explanation:

If you travel at 8 miles per hour, where t is the number of hours, then, using the formula [tex]d=rt[/tex] (r being the rate, in this case 8), the equation becomes [tex]d = 8t[/tex].

Hope this helped!

Answer:

3.92$

Step-by-step explanation:

The first step is to deduct 20% of 4.50 from 4.50.

20% of 4.50 is 0.2 x 4.50 = .90

4.50 - 0.90 = 3.60

That's the new price without the sales tax.

Now we need to add 9% of 3.60 to 3.60 to get the final cost.

9% of 3.60 is .09 x 3.60 = 0.32

3.60 + .32 = $3.92

Hope it helps.. If yes mark me BRAINLIEST

Tysm!

Answer:

$3.92

Step-by-step explanation:

Hello! For this question we need to gather up all the facts before we could answer it!

The original nail polish cost was $4.50

But the bottle was marked down by 20%

Then has a sales tax of 9%

So let's multiply 4.50 x 0.2 = 0.9

With that we need to subtract off of the original price because it is decreasing.

4.50 - 0.9 = 3.60

But that is not the final price because the bottle has a sales tax! We need to multiply the price after the 20% mark down, so, 3.60 x 0.09 = 0.324

And Then because we are dealing with money, we are going to make sure that we are only adding a decimal that goes up to the hundredths place.

Add: 3.60 + 0.32 = 3.92

The Final price of the nail polish that Dora bought would be $3.92. Which is actually a 0.58 cents drop!

I hope this helped!

Answer:

-2

Step-by-step explanation:

your equation is

f(x) = -2x+8

-2x

-2 is the slope

Answer:

The slope is -2

Step-by-step explanation:

Rewriting f(s) as y

y = -2x+8

This is in slope intercept form

y = mx+b where m is the slope and b is the y intercept

y = -2x+8

The slope is -2

Answer:

12.65 miles

Step-by-step explanation:

he runs on a track that is 2 1/2 miles per lap and he runs 3 1/2 laps:

2 1/2 *3 1/2= 5/2 * 7/2=35/4=8.75 miles

afternoon he runs on a track that is 1 3/10 miles per lap and he runs 3 laps

1 3/10 *3=13/10*3=39/10= 3.9

total miles  he runs in a day: 8.75+3.9= 12.65 miles

This is something you would do through trial and error. At least, that's the approach I took. I'm not sure if there is any algorithm to solve. The solution I got is shown in the attached image below. There are probably other solutions possible. The trick is to keep each number separate but not too far away so that the other numbers to be filled in later don't get too crowded to their neighbor.

Side note: any mirror copy of what I posted would work as well since you can flip the page around and it's effectively the same solution.

Answer:

360°

Step-by-step explanation:

According to the properties of parallel lines, the following deductions can be made:

<a and <c are exterior angles of same side, therefore they are supplementary.

Thus,

m<a + m<c = 180°

<b and <d, are alternate interior angles, therefore, they are supplementary.

Thus, m<b + m<d = 180°.

The total numbers of degrees of a, b, c, d will all sum up to give 360°.

Answer:

66 degrees

Step-by-step explanation:

WV is the radius and WX is a tangent, so angle W is 90 degrees. So, 90+24=114 and 180-114 is 66.

Hope this is helpful! :)

Answer:

To eliminate solve for y, we need to eliminate x and we will do that by multiplying the first  equation by 8   and multiply the second equation by 9.

y=6

Step-by-step explanation:

In the equations:

9x + 3y = -18  -----------------------------------------------------------------(1)

8x + 7y = 10 --------------------------------------------------------------------(2)

To solve for  y, we will have to eliminate x

To eliminate x, we will follow the steps below;

multiply equation (1) through by 8   and multiply equation (2) through by 9

The resulting equations are

72x + 24y  = -144 ----------------------------------------------------------(3)

72x +  63y =  90  -----------------------------------------------------------(4)

Then we will go ahead and subtract equation  (4) from equation (3)

39y =234

divide both-side of the equation by 39

39y /39=234/39

y=6

Answer:

4.1 feet

Step-by-step explanation:

Two shapes are said to be similar if they have the same shape and their sides are in the same proportion, i.e. the ratio of their sides are equal.

Given the two figures attached, the height of the first figure is 11 ft, while its width is 8 ft. For the second figure, its height is x feet and its length is 3 ft. Since the two figure are similar therefore the ratio of their sides are equal. Therefore:

[tex]\frac{x}{11} =\frac{3}{8}\\ \\x=\frac{3*11}{8}=4.125\\ \\x=4.1\ feet(to\ nearest\ tenth)[/tex]

Answer:

No, because 30 is not equal to 2.5 times 6

Step-by-step explanation:

2.5 times 6 = 15

Answer:

-2 and 3 along the horizontal line

Step-by-step explanation:

There are two axes, plural for axis; the two main lines. The one that runs vertically is the y axis and the one that runs horizontally is the x axis. Now when you see the parabola which is the curve, it meets at three points. The points are -2 , 6, and 3. the ones we are focusing on are the -2 and 3 since they are the numbers/points on the x axis

Answer:

C.28

Step-by-step explanation:

It gives you 2 sides.

One of them is 8.

The other one is 12 but the 12 is divided by 2 which is 6.

Since it is a parallelogram there is the same measurements on the opposite sides.

So finally you get 6+6+8+8= 28

The perimeter of parallelogram AFCB is C. 28

With the purpose to discover the perimeter or distance around the rectangle, we want to add up all four side lengths. this can be performed efficiently by using truly including the duration and the width, after which multiplying this sum by means of when you consider that there are of every facet length.

The Perimeter is the gap around the item. for instance, your own home has a fenced backyard. the perimeter is the length of the fence. If the yard is 50 toes × 50 feet your fence is 2 hundred feet long.

Learn more about Perimeter here https://brainly.com/question/397857

#SPJ2

Answer:

x > 69.49

Step-by-step explanation:

Step 1: Write out equation

2x - 13.7 > 125.28

Step 2: Add 13.7 to both sides

2x > 138.98

Step 3: Isolate x by dividing both sides by 2

x > 69.49

So x has to be greater than 70 in order to fit into the question context.

Answer:

70

Step-by-step explanation:

Let x be the desired integer. Then 2x-13.7>125.28. Adding 13.7 to both sides gives 2x>138.98, and dividing both sides by 2 gives x>69.49. The smallest integer that is greater than 69.49 is [tex]$\boxed{70}$[/tex].

Hope this helped! :)

Answer:

The fixed term is the y-intercept. In this case the y-intercept would be 100.

Step-by-step explanation:

This is because the 100 dollars cannot be changed. You can always change the amount you save per month and the amount of months you save.

Answer:

A. The time you take your dog for a walk each day

B. The temperature of the water in the local river during the day

C. How long it takes to run a lap around the track  

Step-by-step explanation:

Continuous data is quantitative data that you can measure. It can have an infinite number of possible values within a given range.

For example, you can measure times and temperatures to any number of decimal places if you have the appropriate equipment.

D is wrong. You can't measure the number of croutons in a salad. You must count them.

Answer:

The correct option is;

Q and v

Step-by-step explanation:

The line of best fit can be found by the dividing area method through the  following steps;

1) The dots in the plot are divided into equal number of dots on both sides of a dotted line through S

2) By eye judgement, mark the center of the data dots on each side of the dotted line for example points Q and V

3) Draw a line through the graph passing through point Q and V to get the best fir line.

Answer:

Q V

Step-by-step explanation:

If wrong please tell me so I can fix my answer for you guys.

:)))

Answer:

your answer is -35.

Step-by-step explanation:

let the first 7 terms be 1,2,3,4,5,6, and 7.

we have ,

general term t_n = -3n +7 ,then

t_1 = -3*1 +7

= -3+7

= 4

t_2 = -3*2 +7

= -6 +7

= 1

t_3 = -3*3 +7

= -9+7

= -2

t_4 = -3*4 +7

= -12+7

= -5

t_5 = -3*5 +7

= -15+7

= -8

t_6 = -3*6 +7

= -18+7

= -11

t_7 = -3*7 +7

= -21+7

= -14

Now, the sum of first seven terms is

4 + 1 + (-2) + (-5) + (-8) + (-11) + (-14)

= 5 -2 - 5 - 8 - 11 - 14

= -35

Answer:

-35

Step-by-step explanation:

Sum of the first 7 terms of AP is:

As per general formula t_n= -3n +7 we find the first and seventh terms and the sum of the first 7 terms:

Answer is - 35

Answer:

x = 44º

Step-by-step explanation:

∡P  = 360 - 112*2 = 136º

∡A = x = 180 - 136º = 44º

Answer:

x=44 degrees

Step-by-step explanation:

first find angle P ( interior)

the sum of angle of circle=360

angle p=360-(112+112)= 136

angle P and x add up to 180

P+x=180

x=180-136=44 degrees

Answer:

B

Step-by-step explanation:

The first thing we need to do here is to find the probability value that corresponds to z-score of 2.25

While this is traceable using the normal distribution table, we can easily find it using the Normal distribution function in excel

By using this, we get the probability P value of the z score 2.25 to be 0.012224

Now, before we can accept or reject H0, we need to compare the value of P to the significance level alpha

If P ≤ alpha, we reject the null hypothesis H0

At alpha = 0.05, p value is lesser , we reject the null hypothesis.

At alpha P 0.01, p value is greater so we accept null hypothesis

This shows that the finding is significant at alpha = 0.05 (since we rejected null hypothesis) but not at alpha = 0.01(since we accepted null hypothesis)

the The finding should be option b. The finding is significant at α = 0.05 but not at α = 0.01.

Since the z test statistic is found to be 2.25.

Now the P value of the z score 2.25 to be 0.012224

In the case when P ≤ alpha, we reject the null hypothesis H0

Now

At alpha = 0.05, the p-value is lesser, we reject the null hypothesis.

At alpha P 0.01, p value is more so we accept null hypothesis

Therefore, the option b is correct.

Learn more about hypothesis here: https://brainly.com/question/18831983

Answer:

the function is decreasing at the domain values: (-∞,1)

Step-by-step explanation:

the function is decreasing in the domain values from -∞ until 1, the lowest point with no increase or decrease:

which in interval notation can be written as: (-∞,1)

I hope this helps, but if I didn't answer the question or answered wrongly I will try again.

Answer:

a²  + b²  = c · (e + d) =  c × c = c²

a²  + b²  = c²

Please see attachment

Step-by-step explanation:

Statement,                                                        Reason

ΔADC ~ ΔACB,          Given

AC/AD = BA/AC,        The ratio of corresponding sides of similar triangles

b/e = c/b

b² = c·e

ΔBDC ~ ΔBCA,           Given

BC/BA =  BD/BC,        The ratio of corresponding sides of similar triangles

a/c = d/a        

a² = c·d

a²  + b²   = c·e + c·d

a²  + b²   = c · (e + d)

e + d = c,                       Addition of segment

a²  + b²   = c × c = c²

Therefore, a²  + b²   = c²

Answer:

78.5

Step-by-step explanation:

Answer:

Multiply the second equation by 9.

Step-by-step explanation:

To use the elimination method, you need to be able to add the equations and have one variable add to zero. That way you eliminate that variable.

The first equation has -9y. The second equation has y. If you multiply the second equation by 9, you will have 9y in the second equation. Then when you add equations, you will add -9y and 9y and will eliminate y.

Answer: Multiply the second equation by 9.

Answer:

Step-by-step explanation:

6x - 9y = 21

-6x -2y = -10

-11y = 11

y = -1

3x - 1 = 5

3x = 6

x = 2

(2, -1)

X axis is the horizontal axis and y is the vertical.

On a graph, quandrant 1 is the upper right side which requires both x and y to be positive.

Quadrant 2 is upper left, which is negative x and positive y.

Quandrant 3 is lower left, which is negative x and y.

Quadrant 4 is lower right, which is positive x and negative y.

X< 0 is negative and y > 0 is positive.

This matches quadrant 2

The answer is B.

Answer:

Nearest ten

Step-by-step explanation:

Here, we want to know the highest value that can be attained if this number is rounded up to the decimal places given in the question.

The best way to go about this is rounding this number to each of the decimal places and see the one that has the largest value.

We proceed as follows;

Nearest hundred = 300

Nearest ten = 350

Nearest integer = 346

Nearest tenth = 345.7

Nearest hundredth = 345.67

It can be seen from all the above values that the highest value we have is the nearest ten

Answer:

36 in²

Step-by-step explanation:

The figure that is been described is a Parallelogram.

The area of a Parallelogram is = Base × Height

From the question, the Height of the Parallelogram = 4 inches

The Base of the Parallelogram is calculated as the Length or base of the rectangle + base of the triangle

= 5 inches + 4 inches

= 9 inches

Area of the Parallelogram = 9 inches × 4 inches

= 36 square inches or 36 in²

Answer:

20 INCHES SQUARED

Step-by-step explanation:

Answer:

(5, -3)

Step-by-step explanation:

Coordinates are located on Cartesian planes (more like locating a point on a graph). Cartesian coordinates can be two dimensional or three dimensional in nature depending on the number of axis we are considering. For the question, the dimension of the required coordinate is 2-dimensional i.e (x,y).

On the Cartesian plane, we have the x axis along the horizontal plane and y axis along the vertical.

Note that positive values lies towards the right of the x-axis and also up the y-axis. The negative values lies towards the left of the x-axis and also down the y-axis.

According to the question, if a point is lying on x axis at a distance of 5 units to the right of x axis, then the value of x will be +5 i.e x = +5

Also, if a point lies on the y axis at a distance of 3 units below the origin, then the value of y will be -3 i.e y = -3.

Hence, the coordinates satisfying this points (x,y) is (5, -3)

Answer:

Below

Step-by-step explanation:

The surface are is given by this formula:

Sa= area of the base*the heigth + the area of the base *2

●●●●●●●●●●●●●●●●●●●●●●●●

2)

The base here has a triangular form.

Let A be the area of this triangle.

A= (6*8)/2 = 24 cm^2

Sa = A* 6 + A*2

Sa= 24*6 + 24*2

Sa = 192 cm^2

●●●●●●●●●●●●●●●●●●●●●●●●

The base here is a circle.

The area of a circle is :

A= r^2 * Pi

r is the radius (here 12 km)

A = 12^2* Pi

A= 144 Pi cm^2

Sa = 2*A + A* h

Sa = 7* 144* Pi + 2* 144* Pi

Sa= 4071.504

So the surface area is aporoximatively 4072 km^2