An airplane flies with a constant speed
of 640 km/h. How long will it take to
travel a distance of 640 kilometers?

The expression indicated that the values of a will be between 4.01 and 4.99 and b will be between 2.01 and 3.99.

From the first expression, 4 < a < 5. This means that 4 is less than a and a is less than 5. This means the values of a will be between 4.01 and 4.99.

Also, 2 < b < 4. This means that 2 is less than b and b is less than 4. Therefore, the values of b will be between 2.01 and 3.99.

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Answer:

The answer to a is 4.5, and the answer to b is 3.

Step-by-step explanation:

The averages are found as shown:

4+5=9

9/2=4.5

2+4=6

6/2=3

To find averages, first add all of the certain amount of numbers shown, then divide it all by the same amount of numbers there are.

Example:

5+7+9=21

21/3=7

Answer:

x+3y=15

idrk how to explain but thats the answer

Answer:

y = 3x - 5

Step-by-step explanation:

To find the equation of the line, you can use y = m x + c.

Here,

m ⇒ slope

c ⇒ y-intercept

Given that,

slope = 3

y-intercept = -5

So, to find the equation of the line you have to simply replace m and c in the formula, (y = m x + c )with the given slope and y-intercept.

Let us solve it now.

y = m x + c

y = 3x - 5

Answer:

y = 3x - 5

Step-by-step explanation:

Slope-intercept form of an equation

Given that m = 3 and b = -5

Answer:

949

Step-by-step explanation:

just take ahalf times base times height then multiply by 4 to get the two sides then multiply the base rectangle then multiply the side rectangle and multiply ut by two and add to get the answer

[tex] \frac{ \sqrt{6} }{ \sqrt{2} \times \sqrt{2} } [/tex]

[tex] \frac{ \sqrt{6} }{2 \sqrt{2}} [/tex]

[tex]\frak{\fcolorbox{black}{pink}{Black Pink in your area$~$}}[/tex] ~←(>▽<)ﾉ

Answer:

Step-by-step explanation:

Answer:

C. 11

Step-by-step explanation:

Calculating range is subtracting the highest data value(11) from the lowest data value(0)

11 - 0 = 11

Answer:

1320

Step-by-step explanation:

The sample ad 600 chips. They wanted to test 36000 chips. 600*60=36000

If 22 out of 600 chips were defective, and 600*60=36000

Then 1320 chips were defective out of the 36000 because 22*60=1320.

The answers are presented below:

The quadratic function can be represented by a quadratic equation in the Standard form: ax²+bx+c=0 where: a, b and c are your respective coefficients. In the quadratic function the coefficient "a" must be different than zero (a≠0) and the degree of the function must be equal to 2.

The vertex of an up-down facing parabola of the form ax²+bx+c is [tex]x_v=\frac{-b}{2a}[/tex]  . Knowing the x-coordinate of vertex, you can find the y-coordinate of vertex. When a vertical line passes through the vertex of the parabola, it  is called the axis of symmetry.

The y-intercept is the point where the function crosses the y-axis. And, the x-intercept is the point where the function crosses the x-axis, in other words, when y=0.

First, you should convert the given equation to Standard form.

f(x) = -(c+7)² + 4

f(x)= - (c²+14c+49)+4

f(x)= -c²-14c-49+4

f(x)= -c²-14c-49+4

f(x)= -c²-14c-45

After that, you should check each option of the question.

Correct because present a degree 2 -- f(x)= -c²-14c-45

Incorrect because it is a quadratic function and this function is represented by a parabola.

The coefficients are: a=-1, b=-14, c=-45. Therefore,

[tex]c_v=\frac{-b}{2a}=-\frac{-14}{2*(-1)} =-\frac{-14}{-2}=-(7)=-7[/tex]

Incorrect because x-coordinate of vertex is -7

Correct because  [tex]c_v=\frac{-b}{2a}=-\frac{-14}{2*(-1)} =-\frac{-14}{-2}=-(7)=-7[/tex]

You can find the y-intercept using c=0, then f(x)= -c²-14c-45 will be:

f(x)=-45.

Incorrect because the y-intercept is (0,-45).

The coefficient a of a quadratic function is negative, thus the function has a point maximum. A relative maximum point is defined as the point where the function changes your direction. In other words, the values of the function increase before the relative maximum and the values decrease after the relative maximum.

Correct, see the attached image.

It is possible to find the number of roots or solutions from discriminant.

For quadratic equation the discriminant is determined by D=b²-4ac, where: a, b and c are coefficients.

If D > 0 - the function will have two real solutions;

If D = 0 - the function will have one real solution;

If D < 0 - the function will have imaginary solutions;

For given equation, the coefficients are: a=-1, b=-14, c=-45. Thus, D=(-14)²-4*(-1)*(-45)

D=196-180=16

D=16 thus D > 0

Incorrect because the D>0.

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Answer:

₹9900

Explanation:

Total sold : (41 + 59) = 100 watermelons

Amount earned : 100 * 99 = ₹9900

#Thursday

Money earned=41(99)

#Friday

Money earned

Total:-

5841+4059=$9900

The following solution is arrived at by using the formula for the area of a regular octagon in relation to its Apotem which in this case is 18. Hence the area of the Octagon given is 1,446.

An apothem is defined as a line from the center of a regular polygon at right angles to any of its sides.

The calculation for this shape using only it's apothem has some curved bends. In order to derive the area, we have to divide the octagon into triangles.

When we find the area of the triangles we can then multiply by the total number to get the area of the Octagon.

Hence we can say that the area of the Octagon (A) = (1/2b*h)n

Where b = base

           h = height

           n = number of triangles.

Recall that the total angle in a circle is 360°, hence given that all the triangles are equal, we must divide 360° by  8 triangles to get the angle in the vertex of each triangle.

Thus, 360°/8 = 45°

So we have The angle of our triangle which is opposite the base.

Recall that the triangle is split in two so that each of the triangles are right-angled triangle,

Hence, the angle opposite the base for each right angle triangle is given as:

45°/2 = 22.5°

So to get the length of the opposite side (x), we use the law of tangents:

Which means:

x = 18 Tan 22.5°

= 18 * 0.55785173935

≈ 10.04

So if x is ≈ 10.04, then area of that triangle is

= 1/2 * 10.04 * 18 (that is 1/2bh)

= 90.3792

From the above, we can state that the Area of the triangle with the Apothem is

= 90.3792 * 2

= 180.74

Recall our formula for finding the area of the octagon:

A = (1/2bh)n

A = (108.74) *8

A = 1,445.95

≈ 1,446

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Answer:8755

Step-by-step explanation:100%+3%=103% in decimal form 1.03

8500x1.03=8755

Answer:

Step-by-step explanation:

===========================================================

Explanation:

The figure is an unfolded version of a pyramid, so it's placed as flat as possible.

The square in the middle has area of 7*7 = 49 square meters. This is the base or floor of the pyramid.

Each triangle has area of base*height/2 = 7*5/2 = 35/2 = 17.5 square meters. Four such identical triangles combine to an area of 4*17.5 = 70 square meters. This is the lateral surface area, which is everything but the base.

So the total surface area is

BaseArea + LateralSurfaceArea = 49+70 = 119 square meters

Answer:

7

Step-by-step explanation:

Given expression:

The constant is a term that has no variables. Let's verify the terms in the expression to determine which term is the constant.

Determining if 6x³y is a constant:

Determining if 8x² is a constant:

Determining if 5x is a constant:

Determining if 7 is a constant:

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Answer:

7

Step-by-step explanation:

The constant term in an expression is the term without a variable.

The variables in this expression are x and y, so the constant term is 7 as this term does not have a variable.

Answer:

18 Days Off

Step-by-step explanation:

Firstly, to solve this question you have to identify how many months are in a year; that's 12. So now we know:

Making a formula for calculation is the best way to do this, especially since we now have all of the information needed to answer.

VacationDays=1 [tex]\frac{1}{2}[/tex] × 12

Vacation days are the total number of vacation days in a year.

∴VD= 1 [tex]\frac{1}{2}[/tex] x 12

VD= 18

∴Total vacation days equal 18

Each employee gets 18 vacation days in a year.

Answer: about 0.0202161

Step-by-step explanation:

This is a transcendental equation, so graph the two equations and find the x coordinate where they intersect.

Answer:

d)sell 2 more apple pies

Step-by-step explanation:

increasing 12 apple pies sold to 14 sold would increase the range.

Answer:

I'd times the first equation by 3 and the second equation by 2. Giving:

6x + 15y = 21

6x + 8y = 12

then I'd subtract the second from the first

6x-6x + 15y-8y = 21-12

7y = 9

y = 7/9

then sub y into one of the equations and solve for x.

Answer:

Step-by-step explanation:

Solving simultanius equation by elimination

2x + 5y = 7 -------------(I)

3x + 4y = 6 ---------------(II)

To eliminate x, multiply equation (I) by (-3) and equation (II) by 2. Then add the two equations. Now, 'x' will be eliminated and we can find the value of 'y'.

(I) *(-3)             -6x  - 15y = -21

(II)*2                 6x +  8y  = 12    {Now add}              

                               - 7y  = -9

                                   y = -9/-7

y = 9/7        

Answer:

180 degrees.

Step-by-step explanation:

360 degrees is a full circle, so half of it is 180 degrees.

Answer:

4 and -7

Step-by-step explanation:

Factors of -28: - 1, 1, - 2, 2, -4,4 ,-7,7,-14,14,-28,28

Factors with a sum of -3 = 4 and -7.

Answer:

30% or 4/12

Step-by-step explanation:

Answer:

33.333...% (2/3)

Step-by-step explanation:

the number 1 makes up one third of the numbers on the spinner.

Answer:

  19

Step-by-step explanation:

The triangle inequality tells you the possible values of x are ...

  24 -10 < x < 24 +10

  14 < x < 34

There are 19 integer values of x in this range.

Answer:

A) x = 2.5

B) x = 7/3

Step-by-step explanation:

A) 4x - 1/2 = x + 7

4x - x = 7 + 1/2

3x = 7.5

x = 7.5/3

x = 2.5

B) 3x + 2 = 2x + 13/3

x +2 = 13/3

x = 13/3 - 6/3

x = 7/3

I hope this helps!

We're given a point that the line intersects and its slope.

Let's use Point-slope:-

[tex]\boxed{y-y1=m(x-x1)}[/tex]

y1 = -5

m=-5

x1=-1

[tex]\boxed{y-(-5)=-5(x-(-1)}[/tex]

[tex]\boxed{y+5=-5(x+1)}[/tex]

Convert to slope-intercept:-

[tex]\boxed{y+5=-5x-5}[/tex]

[tex]\boxed{y=-5x-5-5}[/tex]

Finally,

[tex]\bigstar{\boxed{\pmb{y=-5x-10}}[/tex]

Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)

43 is the quotient

=======

[tex]\rightarrow \sf \dfrac{690}{16}[/tex]

[tex]\rightarrow \sf 43\dfrac{2}{16}[/tex]

=========

In a mixed fraction like: [tex]\sf a \dfrac{b}{c}[/tex]

Answer:

43

Step-by-step explanation:

To find the quotient of 690/16, the first step is to simplify the expression so that it would be easier to simplify.

[tex]\rightarrowtail \dfrac{690}{16} = \dfrac{345}{8}[/tex]

Now, let's simplify the expresssion using long division.

(Refer to image attached)

According to the image, we can tell that quotient is 43. Keep in mind that the quotient is the number obtained at the top.

Answer:

131 here is the answer and your welcome

Answer:

8minutes

Step-by-step explanation:

30×60=180

180+28=208

26miles=208minutes

1mile=¿

=8minutes

Answer:

$292.00

Step-by-step explanation:

Total amount collected= number of people×amount per each person

total amount= 73×$4.00

Total amount collected=$292.00

Answer:

$292

Step-by-step explanation:

its really easy, you just multiply 73 to 4

The volume of a sphere with a radius of 4 feet, to the nearest hundredth is: 268.08 cubic feet.

Volume of a sphere, where r is the radius of the sphere, is determined using the formula, V = 4/3 × π × r³.

Given the radius of the sphere is 4 feet

Volume of the sphere = 4/3 × π × r³ = 4/3 × 3.14 × 4³

Volume of the sphere = 268.08 ft³

Therefore, the volume of a sphere with a radius of 4 feet, to the nearest hundredth is: 268.08 cubic feet.

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Answer:

The answer of this question is 11.3

10-20. 20-30. 30-40. 40-50. 50-60

5. 4. 5. 4. 2. N=20

5. 9. 14. 18. 20

M.D= (N/2)

20/2

10th item

(30-40)

Again,

L=30,

I=10

f=5

cf=9

n/2=10

L+(n/2)*I/f