helpppppp due tomarrow please help me easy/simple

Answer:-k+-4k-10; which is -5k-10

Step-by-step explanation:

first distribute.

then add.

done.

By simplifying the expression −k+2(−2k−5) we will get -5k-10

It means converting the complex expression, equation into a simple one from which it will be easy to calculate the value of variable.

The given expression is

-k+2(-2k-5)

=-k-4k-10

=-5k-10

Hence the simplified value of the expression is -5k-10

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Option B is the right answer.

What we're looking for is a hollow point on -3 going to the right and a hollow point on 2 pointing to the left.

The answer to this is B. The one that is shaded orange in the picture.

it's x ≤ 3 :))) I found it out after realizing what you were asking

Answer:

see explanation

Step-by-step explanation:

The common ratio r of a geometric sequence is

r = [tex]\frac{a_{2} }{a_{1} }[/tex] = [tex]\frac{a_{3} }{a_{2} }[/tex] = .....

r = [tex]\frac{-20}{8}[/tex] = [tex]\frac{50}{-20}[/tex] = - 2.5

Multiplying each term by - 2.5 gives the next term

50 × - 2.5 = - 125

- 125 × - 2.5 = 312.5

312.5 × - 2.5 = - 781.25

The next 3 terms in the sequence are - 125, 312.5, - 781.25

The common ratio is -2.5

Next 3 terms after 50 are -125, 312.5, -781.25

A sequence ( increasing or decreasing)  having a pattern that the next term is found by multiplying the previous term with a constant term called common ratio, is called a geometric sequence. Common ratio can be positive or negative.

The given sequence is 8, -20, 50......

The common ratio is   [tex]\frac{-20}{8}= - 2.5[/tex]

Next term after 50 = {50 x (-2.5)} = -125

Next term after -125 = {(-125) x (-2.5)} = 312.5

Next term after 312.5 = {312.5 x (-2.5)} = -781.25

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1/5 of a foot

Simply subtract the height of Pancho’s sandcastle (3/5 of a foot) minus the height of his sister’s sandcastle (2/5 of a foot) to find a difference of 1/5 of a foot, meaning Pancho’s sandcastle was 1/5 of a foot taller than his sister’s sandcastle.

Answer:

C.

Mean= 4.9

Mean Absolute Deviation (MAD): 4.099173553719

Step-by-step explanation:

An outlier is a value that is very different from the other data in your data set. This can skew your results. As you can see, having outliers often has a significant effect on your mean and standard deviation. Because of this, we must take steps to remove outliers from our data sets.

outlier: 21

Answer:

the answer is C :D

Step-by-step explanation:

Answer:

(f of g)(x)=f(g(x))=f(x-3)=e^(x-3)

The domain of a real exponential function is all real, and

the corresponding range is y>0, i.e. (0,+∞)

Step-by-step explanation:

Answer:

y = -3x + 2, or C

Step-by-step explanation:

So, slope intercept form is y = mx + b.

m = (y2 - y1)/(x2 - x1). So (5 - (-1))/(-1 - 1) = -3

b = (0,2), according to the graph, or just 2.

So y = -3x + 2

Answer:

The height h is [tex]5\ cm[/tex]

Step-by-step explanation:

we know that

The surface area of the bread is equal to

[tex]SA=2B+Ph\\[/tex]

where

B is the area of the base

P is the perimeter of the base

h is the height

In this problem

If fifty percent of the surface area of the bread is crust

then

[tex]2B=Ph\\[/tex]

substitute the values

[tex]2(10)(10)=4(10)h\\[/tex]

[tex]200=40h\\[/tex]

[tex]h=200/40=5\ cm[/tex]

Answer:

- 11 - 6x + 2x^2 +8x^3

Step-by-step explanation:

Usually polynomials are written in descending order, with the highest exponent value going first. In this problem, you need to find the lowest exponent value, and go up from there. After looking at all the answers, you can conclude that - 11 - 6x + 2x^2 +8x^3 is correct.

I hope this helps!

Answer:

D

Step-by-step explanation:

A polynomial in ascending order means the term of lowest degree is first, followed by terms of increasing degree

A constant has degree zero

A term with x has degree 1

A term with x² has degree 2

A term with x³ has degree 3 ... and so on, thus

- 11 - 6x + 2x² + 8x³ ← is written in ascending order

I think the ratio is 3:125

Answer:

1746.5

Step-by-step explanation:

Answer: D) x⁻²

Step-by-step explanation:

  x³ ÷ x⁵

= x³⁻⁵

= x⁻²

joe finished 3:58 pm

Joe finished the race at 3:58 PM, 4 minutes before Mike, who finished at 4:02 PM. Subtract 4 minutes from 4:02 PM to get Joe's finish time. The result is 3:58 PM.

Joe and Mike both participated in the same race, but Joe finished 4 minutes earlier than Mike. We know that Mike finished the race at 4:02 PM. To determine Joe's finish time, we need to subtract 4 minutes from 4:02 PM.

Here are the steps:

Therefore, Joe finished the race at 3:58 PM.

Answer:

i think it is c

Step-by-step explanation:

Answer:

41.4%

Step-by-step explanation:

The formula for determining the frequency: [tex]f(h)=440(2)^{\frac{h}{12}}[/tex]  --A

where h is the number of half-steps from the A above middle C on the keyboard.

A note is six half-steps away from the A above middle C.

Now we are supposed to find How much greater is the frequency of the new note compared with the frequency of the A above middle C?

Now initially there is no half steps .

So, substitute h =0

[tex]f(0)=440(2)^{\frac{0}{12}}[/tex]

[tex]f(0)=440[/tex]

Now we are given that A note is six half-steps away from the A above middle C

So, substitute h =6

[tex]f(6)=440(2)^{\frac{6}{12}}[/tex]

[tex]f(6)=622.25[/tex]

Now To find change percentage

Formula: [tex]=\frac{\text{final} - \text{initial}}{\text{Initial}} \times 100[/tex]

                [tex]=\frac{622.25- 440}{440} \times 100[/tex]

               [tex]=0.414 \times 100[/tex]

               [tex]=41.4\%[/tex]

Hence  the frequency of the new note is 41.4% greater with the frequency of the A above middle C.

Answer:

C

Step-by-step explanation:

Substitute 2x into the equation where x is located. G(x)= (2x)^2=4x^2. This will be a graph which has been vertically stretched has a very steep curve to it facing up. It is C.

Answer:

(0,-2), (5,0) and (10,2).

Step-by-step explanation:

Given equation is [tex]2x-5y=10[/tex].

Now we need to find 3 pairs of solutions in (x,y) form for the given equation.

As [tex]2x-5y=10[/tex] is a linear equation so we are free to pick any number for x like x=0, 5, 10

Plug x=0 into [tex]2x-5y=10[/tex], we get:

[tex]2(0)-5y=10[/tex]

[tex]0-5y=10[/tex]

[tex]-5y=10[/tex]

[tex]y=\frac{10}{-5}[/tex]

[tex]y=-2[/tex]

Hence first solution is (0,-2)

We can repeat same process with x=5 and 10 to get the other solutions.

Hence final answer is (0,-2), (5,0) and (10,2).

The answers is:

The three points that are solution for the equation are:

[tex](5,0)\\(0,-2)\\(6,0.4)[/tex]

To find 3 pairs (x,y) or points that are solutions for the equation, we could find where the function intercepts the x-axis and y-axis, we must remember that the domain of a line is all the real numbers, so by using any input, we will find a solution, which means finding a point that belongs to the line.

So,

Finding the axis intercepts of the line, we have:

x-axis intercept:

Making "y" equal to 0, we have:

[tex]2x-5y=10[/tex]

[tex]2x-5*(0)=10[/tex]

[tex]2x=10[/tex]

[tex]x=\frac{10}{2}=5[/tex]

We have that the interception point with the x-axis is (5,0)

y-axis intercept:

Making "x" equal to 0, we have:

[tex]2x-5y=10[/tex]

[tex]2*(0)-5y=10[/tex]

[tex]0-5y=10[/tex]

[tex]5y=-10[/tex]

[tex]y=\frac{-10}{5}=-2[/tex]

We have that the interception point with the y-axis is (0,-2)

As we know, the domain of a line is equal to the real numbers, Now, we have that any between the points (5,0) and (0,-2) will belong to the line, so, let's try with a point wich x-coordinate (input) is equal to 6 and then find the y-coordinate (output) if the point satisfies the equality, it belongs to the equation to the line.

Substituting x equal to 6, we have:

[tex]2*(6)-5y=10[/tex]

[tex]12-5y=10[/tex]

[tex]12-10=5y[/tex]

[tex]y=\frac{12-10}{5}=\frac{2}{5}[/tex]

So, the obtained point is:

[tex](6,\frac{2}{5})[/tex]

or

[tex](6,0.4)[/tex]

Now, let's prove that it belongs to the equation of the line by substituting it into the equation:

[tex]2*(6)-5*\frac{2}{5}=10[/tex]

[tex]12-2=10[/tex]

[tex]10=10[/tex]

We can see that the equality is satisfied, it means that the point belongs to the line.

Hence, the three points that are solutions for the equation are:

[tex](5,0)\\(0,-2)\\(6,0.4)[/tex]

Have a nice day!

Answer:

The graph of an inequality in two variables is the set of points that represents all solutions to the inequality. A linear inequality divides the coordinate plane into two halves by a boundary line where one half represents the solutions of the inequality. The boundary line is dashed for > and < and solid for ≤ and ≥.

Answer:

C. 6.3cm

Step-by-step explanation:

The length of the arc is calculated using the formula;

[tex]l=\frac{Central\:angle}{360\degree} \times 2\pi r[/tex]

The radius of the circle is r=10cm

The central angle is 36 degrees.

[tex]l=\frac{36\degree}{360\degree} \times 2\times3.14\times10[/tex]

We simplify to get;

[tex]l=\frac{1}{10} \times 3.14\times 20[/tex]

[tex]l=3.14\times 2=6.3cm[/tex]

Answer:

6.3 is the correct answer :D

Step-by-step explanation:

Answer:

Watson's garden shop has the better deal on the lawn mower.

Hope this helped :)

Step-by-step explanation:

Watson's $130 - 50% = $65

Hartman's $130 - 40% = $78

                  $78 - 15% = About $66

Answer:

The deal of Watson’s garden shop is better.

Step-by-step explanation:

Given,

The original price = $ 130,

After 50% off,

The new price would be,

[tex]P_1=130\times \frac{(100-50)}{100}[/tex]

[tex]=\frac{130\times 50}{100}[/tex]

[tex]=\frac{6500}{100}[/tex]

[tex]=\$ 65[/tex]

While, after 40% off then additional 15% off,

The new price would be,

[tex]P_2= 130\times \frac{(100-40)}{100}\times \frac{(100-15)}{100}[/tex]

[tex]=130\times \frac{60}{100}\times \frac{85}{100}[/tex]

[tex]=\frac{663000}{10000}[/tex]

[tex]=\$ 66.30[/tex]

∵ 66.30 > 65

Hence, first deal is better.

The quadratic equation in vertex form is f(x) = 0.4(x - 2)² + 5

How to determine the equation in vertex form

From the question, we have the following parameters that can be used in our computation:

The graph

Where, we have the vertex to be

(h, k) = (2, 5)

A quadratic equation in vertex form is represented as

f(x) = a(x - h)² + k

So, we have

f(x) = a(x - 2)² + 5

Using the points, we have

a = 0.4

Substitute the known values into the equation

f(x) = 0.4(x - 2)² + 5

Hence, the equation in vertex form is f(x) = 0.4(x - 2)² + 5

Answer:  D) 10 sin (πx) - 5

Step-by-step explanation:

The range (maximum - minimum) is 5 - (-15) = 20

The amplitude (A) is range (20) ÷ 2 = 10

The vertical shift (D) is maximum (5) - amplitude (10) = -5

Of the given options, only A & D are candidates.  Now we need to decide if it is a cos graph (A) or a sin graph (D).  If we shift the graph up 5 units (to eliminate the vertical shift) , the graph would pass through the origin.  Thus it is a sin graph and the answer must be option D.

Answer:

x = 5 or x = -4

Step-by-step explanation:

3x^2 - 3x - 60 = 0

Factor out 3 from the left side.

3(x^2 - x - 20) = 0

Divide both sides by 3.

x^2 - x - 20 = 0

Factor the trinomial.

(x - 5)(x + 4) = 0

x - 5 = 0 or x + 4 = 0

x = 5 or x = -4

Answer: [tex]\frac{4}{3}\pi (6)^3[/tex]

Step-by-step explanation:

The formula for calculate the volume of a sphere is:

[tex]V=\frac{4}{3}\pi r^3[/tex]

Where "V" is the volume of the sphere and "r" is the radius of the sphere.

In this case the radius of the sphere is 6 units. Knowing this radius, you can substitute into the formula [tex]V=\frac{4}{3}\pi r^3[/tex]

Therefore, you get that the expression that represents the volume of this sphere is:

[tex]V=\frac{4}{3}\pi (6)^3[/tex]

Answer:

4/3π(6)3

Step-by-step explanation:

Answer:

The volume of the mulch is [tex]528\ in^{3}[/tex]

Step-by-step explanation:

we know that

The volume of the mulch is equal to

[tex]V=Bh[/tex]

where

B is the area of the border of the mulch

h is the deep of the mulch

Find the area of the border B

The area of the border B is equal to the area of the complete square minus the area of the inside square

so

[tex]B=24^{2}-20^{2} = 176\ in^{2}[/tex]

we have

[tex]h=3\ in[/tex] -----> the deep of the mulch

substitute the values

[tex]V=(176)(3)=528\ in^{3}[/tex]

Answer:

32.64

Step-by-step explanation:

Answer:

hello : x = 14

Step-by-step explanation:

g(x)=20

solve this equation :

2(x-4) =20

divid by 2

x - 4  =10

add 4:

x = 14

Answer: I'm pretty sure it's a or c. I think its c.

Step-by-step explanation: Cuz 3x + 4x = 7x times 4x = 28x then we have

                                             12x + 16x = 28x

The Pythagorean Theorem is

[tex]a^2+b^2=c^2[/tex]

Where a and b are legs and c is the hypotenuse.

If we had the measurements 27, 36, and 45...

[tex]a^2+b^2=c^2 \\ \\ 27^2+36^2=45^2 \\ \\ 729+1296=2025 \\ \\ 2025 = 2025[/tex]

So it is a right triangle because [tex]a^2+b^2=c^2[/tex]

The values of a, b, and c are given.

[tex]a=27 \\ b=36 \\ c=45[/tex]

Converse blanks: the sum of the legs squared is equal to the square of the hypotenuse; right.

a = 27, b = 36 (a and b can be switched), c = 45 --> the hypotenuse is always the longest side.

a² + b² = c²

Substitute: 27² + 36² = 45²

Simplify: 729 + 1296 = 2025

Simplify: 2025 = 2025

This is a right triangle because the sum of the lengths of the legs squared is equal to the length of the hypotenuse squared.

(also good note, the sides have a ratio of 3 : 4 : 5, which will always make a right triangle)

Answer:

D

Step-by-step explanation:

let y = f(x), that is

y = [tex]\frac{2x-3}{5}[/tex]

Rearrange making x the subject

Multiply both sides by 5

5y = 2x - 3 ( add 3 to both sides )

5y + 3 = 2x (divide both sides by 2 ) , then

x = [tex]\frac{5y+3}{2}[/tex]

Change y back into term of x, hence

[tex]f^{-1}[/tex](x) = [tex]\frac{5x+3}{2}[/tex] → D

D is the correct answer

The median for this given data set is 5.

To find the median for a set of data, you need to first arrange the data in numerical order. Then, you locate the middle value to find the median. Therefore the median is 5.

Answer:

B: 4

Step-by-step explanation:

#first

Answer:

A, 3

Step-by-step explanation:

The degree, otherwise known as the power, is 3.