I need help!

Can’t figure this out

Given:

Let's evaluate the integral:

Thus, we have:

Expand using distributive property:

ANSWER:

Cost of 1 slice of pizza and 3 sodas = $5.25

When the requirements of a mathematical model are represented by linear relationships, the best result can be obtained using a technique known as linear programming (LP), also known as linear optimization. A particular type of mathematical programming is linear programming. Formally speaking, linear programming is a method for optimising a linear objective function under the constraints of linear equality as well as linear inequality. Convex polytopes, a set defined as that of the intersection of a finite number of half spaces, which are defined by a linear inequality, make up its feasible region. A real-valued affine (linear) function defined on the this polyhedron serves as its objective function. If there is a point in the polytope in which this function does have the smallest (or largest) value, a linear programming algorithm locates it.

Let the cost of 1 slice of pizza be x and cost of 1 soda be y.

Now,

Richard bought 3 slices of pizza and 2 sodas for $8.75

Therefore, [tex]3x+2y=8.75[/tex]

Jordan bought 2 slices of pizza and 4 sodas for $8.50

Therefore, [tex]2x+4y=8.50[/tex]

Solving above equations, we get         [tex]x=2.25[/tex] and [tex]y= 1[/tex].

Cost of 1 slice of pizza and 3 sodas = 2.25 + 3*1

                                                           = 2.25 +  3

                                                            = 5.25

Hence, Cost of 1 slice of pizza and 3 sodas = $5.25

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Both Anya  and Todd  are correct that  with 24 counters both 6 arrays and 8 arrays are possible.

Whats is an array?

An array is a set of items, images, or numbers arranged in rows and columns. Arrays are practical illustrations of multiplication theories (among other ideas in mathematics).

Here 24 can also be expressed as 6x4 and 8x3 therefore both ways are possible.

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Answer:

D

Step-by-step explanation:

It says twice as many so just multiply the ratio by two. That means its 10 pens and 30 pencils.

We are given the population and the area of the city and asked to calculate the population density.

Recall that the population density is the calculation that consists of dividing the population by the area. Then, in this case it would be

Then, the population density is 8750 habitants per square mile

The mixed fraction form

is equivalent to

since 5/6 is equal to 0.8333, then

Therefore, since 5.83333 is greater than 5.6, then 5 5/6 is greater than 5.6

The dimensions of the enlargement will be: 32 inches by 28.8 inches.

The new dimensions can be gotten with the formula below:

Scale factor = Dimensions of new image / Dimensions of the original image.

Dimensions of new image = Scale factor × Dimensions of the original image

8 × 4 = 32 inches

8 × 3.6 = 28.8 inches.

Therefore, the new dimensions of the enlargement will be:

3 inches by 28.3 inches.

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The evaluated version of   ((x²-xy)-5x)-(4(2xy+2x²) is:

-x • (7x + 9y + 5)

Given, the expression is  ((x²-xy)-5x)-(4(2xy+2x²)

open the brackets.

x²-xy-5x-8xy-8x²

pull out the like terms.

-7x²-9xy-5x

= -x • (7x + 9y + 5)

Hence after evaluating ((x²-xy)-5x)-(4(2xy+2x²), we get -x • (7x + 9y + 5)

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To find the slope we can use the formula so:

now we can replace the coordinates so:

first we can separate the values ​​with exponents that having the same base can be reduced

so

now do the multiplication between 4.8 and 2.2 and reduce the fraction

so, the right option is B

We are given the following expression:

We are asked to find the value of the expression when x = 6. To do that, we replace the value of "x" in the expression:

Solving the operations we get:

Answer:

A

Step-by-step explanation:

Answer:

h = 2

k = 5

Step-by-step explanation:

Midpoint between two points

[tex]\textsf{Midpoint}=\left(\dfrac{x_2+x_1}{2},\dfrac{y_2+y_1}{2}\right)\quad \textsf{where}\:(x_1,y_1)\:\textsf{and}\:(x_2,y_2)\:\textsf{are the endpoints}}\right)[/tex]

Given:

Substitute the given values into the formula:

[tex]\implies (6, 0)=\left(\dfrac{k-3+3h+4}{2},\dfrac{k-2+1-2h}{2}\right)[/tex]

[tex]\implies (6, 0)=\left(\dfrac{k+3h+1}{2},\dfrac{k-2h-1}{2}\right)[/tex]

Equating the x-values to create an expression for k:

[tex]\implies \dfrac{k+3h+1}{2}=6[/tex]

[tex]\implies k+3h+1=12[/tex]

[tex]\implies k+3h=11[/tex]

[tex]\implies k=11-3h[/tex]

Equating the y-values to create an expression for k:

[tex]\implies \dfrac{k-2h-1}{2}=0[/tex]

[tex]\implies k-2h-1=0[/tex]

[tex]\implies k-2h=1[/tex]

[tex]\implies k=2h+1[/tex]

Equate the expressions for k and solve for h:

[tex]\implies 2h+1=11-3h[/tex]

[tex]\implies 5h=10[/tex]

[tex]\implies h=2[/tex]

Substitute the found value of h into one of the equations for k and solve for k:

[tex]\implies k=2(2)+1[/tex]

[tex]\implies k=4+1[/tex]

[tex]\implies k=5[/tex]

the equation in the standard form is Ax + By = C

12.

15.

18.

The value of x is 71 degree .

Triangles that have two sides at least equally spaced apart are said to be isosceles. As three-sided enclosed polygons with three sides, triangles are known to exist. Depending on the length of their sides, triangles can be categorized as equilateral, isosceles, or scalene.

The three interior angles of a triangle will always have a sum of 180°. A triangle cannot have an individual angle measure of 180°, because then the other two angles would not exist (180°+0°+0°).

So ,

x +x+38 = 180

2x = 180 -38

2x = 142

x = 71

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Let x be the total number of questions.

Since we know that 60% is equal to 9 questions of the exam we have the equation:

where, as we stated above, x represents the total number of questions.

Solving for x we have:

therefore the exam has 15 questions.

The cost function is given by

C(t)=250t+750

Where

C(t) is the cost to rent a crane in t hours of use in a day.

t is the number of hours of use

And the derivatitve of the cost function with respect to t is given by

dC/dt=250

Hence, the rate of change of cost with respect to hours rented 250 dollars per hour

Answer:

o////////////o

Answer:

yES uwuuuuuuuuu

Step-by-step explanation:

Okay, here we have this:

Considering the provided quadratic function, we are going to rewrite in standard form, so we obtain the following:

So to rewrite the function in standard form we will complete the square:

And from this equation we get that the vertex is (4, -16)

Therefore the correct graph is the one in the upper right corner.

Given:

A hemisphere has a radius of 8 cm.

Required:

To find the volume of the hemisphere.

Explanation:

The formula for volume of the hemisphere is,

Final Answer:

Answer:

  7.5 parts yellow

Step-by-step explanation:

The color moss green has violet and yellow paint mixed in the proportion 2 to 3. You want to know the number of parts of yellow paint that should be mixed with 5 parts of violet paint.

The proportion can be written different ways. We like to put the unknown value in the numerator. (x is the number of parts of yellow paint)

  yellow : violet = 3 : 2 = x : 5

Expressed as fractions, the proportion is ...

  [tex]\dfrac{3}{2}=\dfrac{x}{5}\\\\5\times\dfrac{3}{2}=x\qquad\text{multiply by 5}\\\\\dfrac{15}{2}=x=7.5\qquad\text{simplify}[/tex]

7.5 parts yellow paint should be mixed with 5 parts violet paint.

__

Additional comment

If you kept the proportion as violet : yellow, then the unknown value would be in the denominator. The solution to that proportion requires another step. Here, we just needed to multiply by the denominator value to find the unknown.

Answer:

f(x) = |x-2| + 10

Step-by-step explanation:

The two different trinomials that have a greatest common factor of  [tex]5x^{2} y^{3}[/tex] are:

a) [tex]35x^{2} y^{5}z^{2} +5 x^{4}y^{9}z +15x^{3} y^{3}[/tex]

b) [tex]25x^{4} y^{3} z+5x^{7}y^{8} +10x^{2}y^{4} z\\[/tex]

Let us verify,

a)  Consider the trinomial   [tex]35x^{2} y^{5}z^{2} +5 x^{4}y^{9}z +15x^{3} y^{3}[/tex],

The Greatest Common Factor  of 35, 5, 15 is 5

The Greatest Common Factor  of  [tex]x^{2} ,x^{4} ,x^{3} =x^{2}[/tex]

The Greatest Common Factor  of  [tex]y^{5} ,y^{9} ,y^{3} = y^{3}[/tex]

There is no G.C.F for z because it is missing in the 3rd term.

So, the G.C.F  of the trinomial   [tex]35x^{2} y^{5}z^{2} +5 x^{4}y^{9}z +15x^{3} y^{3}[/tex] =  [tex]5x^{2} y^{3}[/tex]

b) Consider the trinomial   [tex]25x^{4} y^{3} z+5x^{7}y^{8} +10x^{2}y^{4} z\\[/tex],

The Greatest Common Factor  of 25, 5, 10 is 5

The Greatest Common Factor  of [tex]x^{4} ,x^{7} ,x^{2} =x^{2}[/tex]

The Greatest Common Factor  of [tex]y^{3} ,y^{8} ,y^{4} = y^{3}[/tex]

There is no G.C.F for z because it is missing in the 2nd term.

So, the G.C.F of the trinomial  [tex]25x^{4} y^{3} z+5x^{7}y^{8} +10x^{2}y^{4} z = 5x^{2} y^{3}[/tex]

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Answer:

42/11 or 4.454545..

Step-by-step explanation:

square both sides
(SQRT(9x+7) + SQRT(2x))^2 = 7^2

9x+7 + 2x = 49

11x = 42

x = 42/11 or 4.4545...

In order to find the length of the side CD in the pentagon ABCDE we would need to find the distance between the two points (4,-2) and (8, 2)

We would use the following formula:

plug in x1= 4, x2= 8, y1=-2, y2=2

So,

d=5,65

The length of the side CD in the pentagon ABCDE would be 5,62

a) From the graph,

shortest side length of original figure = 1/2 units

By dilating the original figure by 4, we would multiply each length by 4

Thus,

shortest side length of final figure = 1/2 x 4 = 2 units

b) shortest side length of the final figure = 4 x shortest side length of the original figure

c) A dilation with a positive scale factor greater than 1 gives an enlarged figure.Thus, the answer is False

d) After dilation, the original and final figures are similar. Thus, the answer is False

Answer:

f(10) = -300

Step-by-step explanation:

f(x) = -3x^2

f(10) = -3(10)^2

f(10) = -3(100)

f(10) = -300

Answer:

No, it is not proportional because 7.5 miles in 6 hours is not equivalent to 12 miles in 8 hours.

Step-by-step explanation:

The correct relationship between the hikers distance and time is;

No, it is not proportional because 7.5 miles in 6 hours is not equivalent to 12 miles in 8 hours.

What is Proportional?

Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.

Given that;

A group of hikers tracked how long it took to hike a 20-mile trail.

And, They hiked 3.75 miles in 3 hours, 7.5 miles in 6 hours, and 12 miles in 8 hours.

Now,

Find the proportional as;

For hiked 3.75 miles in 3 hours,

Proportional = 3.75 / 3

                   = 1.25

For hiked 7.5 miles in 6 hours,

Proportional = 7.5 / 6

                   = 1.25

For hiked 12 miles in 8 hours,

Proportional = 12 / 8

                   = 1.5

Thus, The correct relationship between the hikers distance and time is;

No, it is not proportional because 7.5 miles in 6 hours is not equivalent to 12 miles in 8 hours.

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To first start our problem, we will draw some coordinate axis at point E, since we are rotating the figure around this vertex. We get something like this

We are going to fix the point E. But we are going to rotate the figure in the direction in which the arrow shows. Since it is a 90° rotation, our goal is to align the blue vertical line, with the red horizontal line, following the direction of the black arrow. The picture would look like this

Note that the lengths of the new figure should remaing the same. That is, the side H' E should have a length of 3 squares and the length of H' G' should be 2 squares.

Answer:

im pretty sure its 90000

Step-by-step explanation: