what is answer if we factorise x square - 2 x minus 80​

Given:

Radius of small circle = 4 in.

Width of gray border = 2 in.

To find:

The area of the gray border.

Solution:

We have, radius of small circle:

[tex]r=4\text{ in.}[/tex]

The width of gray border is 2 in. So,t he radius of the larger circle is:

[tex]R=4+2\text{ in.}[/tex]

[tex]R=6\text{ in.}[/tex]

Now, area of gray border is the difference for area of larger circle and smaller circle.

[tex]A=\pi R^2-\pi r^2[/tex]

[tex]A=\pi (R^2-r^2)[/tex]

Substituting [tex]r=4,\ R=6[/tex] in the above formula, we get

[tex]A=\pi (6^2-4^2)[/tex]

[tex]A=\pi (36-16)[/tex]

[tex]A=\pi (20)[/tex]

[tex]A=20\pi[/tex]

The area of the gray border is [tex]20\pi [/tex] square inches. Therefore, the correct option is D.

Answer:

x=7/3

Step-by-step explanation:

3x2y=5 equation 1

3x-2y=9 equation 2

6x=14 add above 2 equations which eliminates y

x=14/6

x=7/3

Answer:

30

Step-by-step explanation:

25-10 = 15

15 x 2 = 30

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

First we must get the difference between 25 and 10.

[tex]25 - 10 = \green{15}[/tex]

Next, we must double the answer.

[tex]15 \times 2 = \bold \blue{30} \\ \tt or \\ {15}^{2} = \purple {\sf{30}}[/tex]

Stay safe!

Answer:

Letter D

Step-by-step explanation:

hope it helps

Answer:

Your answer is D

Step-by-step explanation:

So when fliping over the x-axis the x stays and the y changes.

So A is wrong because it was fliped over the y-axis

So is B since it did flip over the x-axis but then went over the y-acis.

So you are left with C and D

C and D did go over the x-axis but when you look at the figure it is different

C figure is the same and when you reflect somthing over any axis it will not always be the same.

Your answer is D, the figure is a reflection over the x-axis and the figure is fliped

Hoped this helped :D

Answer:

x=13

Step-by-step explanation:

3x+78 +x+50=180

3x+x+78+50=180

4x+128=180

4x=180-128

4x=52

4x/4=52/4

x=13

using the principal of straight line angle

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{3x + 78 + x + 50 = 180^\circ}\\\\\large\text{COMBINE the LIKE TERMS}\\\\\mathsf{(3x + x) + (78 + 50)}\\\mathsf{3x + x = 4x}\\\mathsf{78 + 50 = 128}\\\\\mathsf{4x + 128 = 180^\circ}\\\\\large\text{SUBTRACT 128 to BOTH SIDES}\\\\\mathsf{4x + 128 - 128 = 180 - 128}\\\\\large\text{CANCEL out: 128 - 128 because that gives you 0}\\\large\text{KEEP: 180 - 128 because that helps solve for the x-value}\\\mathsf{180-128=52}\\\\\mathsf{4x = 52}\\\\\large\text{DIVIDE 4 to BOTH SIDES}[/tex]

[tex]\mathsf{\dfrac{4x}{4} =\dfrac{52}{2}}\\\\\large\text{CANCEL out: }\mathsf{\dfrac{4}{4}}\large\text{ because that gives you 1}\\\large\text{KEEP: }\mathsf{\dfrac{52}{2}}\large\text{ because that gives you the value of x}\\\\\mathsf{\dfrac{52}{4}=52\div4=x}\\\\\boxed{\boxed{\large\textsf{Answer: \huge \bf x = 13}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

13 cm

Step-by-step explanation:

slant height = [tex]\sqrt{12^2 +\frac{10^2}{4} }[/tex]

=[tex]\sqrt{144 + \frac{100}{4} }[/tex]

=[tex]\sqrt{144 + 25}[/tex]

=[tex]\sqrt{169}[/tex]

=13 cm

a=10 cm

l =

surface area =[tex]a^{2} + 2a \sqrt{\frac{a^{2} }{4} +h^{2} }[/tex]

=[tex]10^{2} +2*10 \sqrt{\frac{10^{2} }{4} +12^{2} } \\100 + 20 \sqrt{\frac{100}{4} + 144} \\100 + 20\sqrt{25 + 144} \\100 + 20 \sqrt{169} \\100 + 20*13\\100 + 260\\360 cm^2[/tex]

Answer:

3/15= 1/5 That's the answer

Answer:

YOUR ANSWER IS B

Step-by-step explanation:

Step-by-step explanation:

15 = 1000

its done .

may it helped u

Answer:

step c

Step-by-step explanation:

Answer:

y=12, x=6

Step-by-step explanation:

y+3=15

3x-6=12

Answer:

do it ur self

Step-by-step explanation:

and don't cheat

Answer:

B

Step-by-step explanation:

This one takes a little trial and error but you can probably find the answer quickly.

Answer:

If angle ABE = 48°,then angke DBC = 43° .

Step-by-step explanation:

Since, ∠ABE = 43 °

∠DBC = 43 ° .. ( Vertically opposite angles)

Answer:

Have a nice day :)

Step-by-step explanation:

To convert 11/4 into a mixed number, we need to divide 11 by 4 and get the values of quotient and remainder after performing division. When we divide 11/4, we get 2 as the quotient and 3 as the remainder. Now use the calculator to convert the following improper fractions to mixed fractions: 45/6

Answer:

Step-by-step explanation:

First you need to put the equation in slope intercept form.

y = mx + b   (m = slope and b = y-intercept)

5x + 2y = 12   (subtract 5x)

2y = -5x + 12   (now you need to isolate y. Therefore, divide all by 2)

y = -5/2x + 6

Now you have your slope and y-intercept. Your y-intercept will be 6. So on the graph you need to begin at 6 on the y-axis (the line that goes up and down). Make your first point there. Your slope is the -5/2x. Slope is looked at as rise/run. This means from your point at 6, you will go down (down because it's negative. If it was a positive, you would go up, i.e rise) 5 units. Then you will go over to the right 2 units (to the right because it is positive. Only the top one will be negative.) Place your point once you have done that. Then draw a line between those two points.

(note that on my screenshot, the tiny squares do not equal 1 unit. The larger ones with the bunch of tiny squares inside equal 1 unit)

I hope this helped :)

Answer:

x = 76°

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Geometry

Step-by-step explanation:

Step 1: Define

Identify and set up

30° + 74° + x = 180°

Step 2: Solve for x

Answer:

x° = 76 °

Step-by-step explanation:

We know that sum of interior angles of triangle is 180 °.

74 ° + 30 ° + x° = 180 °

combine like terms

104 ° + x° = 180 °

subtract each side by 104°

x° + 104 ° - 104 ° = 180 ° - 104 °

x° = 76 °

Answer:

The graph below shows the answer to

2x - 3y < 12

Also shown as

-3y < -2x + 12

Step-by-step explanation:

You can rearrange the inequality by subtracting 2x from both sides to isolate the y.

You now have -3y < 12 -2x

which can be put into the standard linear equation form of

-3y < -2x + 12

Then you divide both sides by -3 to get singular value of y, which is something like

-3/-3y < -2/-3x + 12/-3

which is

y > 2/3x -4

Note: I switched direction of the inequality because you are dividing both sides by a negative value.

if RD is 12cm so AR is 12cm too... since the R is placed in the middle and we can analyze too that the AD is 24cm since RD is 12cm and AR is 12cm so...

12+12=24

AR= 12cm

Hope it helps...

Answer:

45.056 = 45

45.56 = 46

Step-by-step explanation:

Given :

45.056 to nearest integer. If the number is 45.56

To round 45.056 to the nearest integer, we evaluate the value after the decimal point, if the value after the decimal point is greater Than or equal to 5, we round to 1 and add to the value immediately before the decimal point, if otherwose, we round to 0 ;

Therefore,

45.056 = 45 (nearest integer) ; 0 is less than 5

45.56 = 46 (nearest integer) ; round 5 to 1 and add to 5, to give 6

Answer:

given the information all your chances will be out of a 100% you don't have to convert these numbers because there is already only 100 people allowed to enter meaning you are 1 out of 100 people entered and have a 1/100 (1%) chance of winning and a 99/100 (99%) chance someone else winning

Answer:

n = 70

Step-by-step explanation:

n/10 = 7

Multiply each side by 10

n/10 *10 = 7*10

n = 70

Hi there!  

»»————-　★　————-««

I believe your answer is:  

[tex]n=70[/tex]

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]\boxed{\text{Solving for 'n'...}}\\\\\frac{n}{10}=7\\---------\\\rightarrow(\frac{n}{10})10=7(10)\\\\\rightarrow\boxed{n=70}[/tex]

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

A: Parameter

B: Population

C: Statistic

D: Variable

E: Sample

F: Data

Step-by-step explanation:

A- The average speed that all drivers go on Highway 50: This is the parameter because it is the mean of the population.

B- All people who drive on Highway 50: This is the Population because it is from here that the sample was taken.

C- The average speed that the 250 randomly selected drivers drove on Highway 50: This is the statistic because it represents the mean of the sample.

D- The speed that a driver drives on Highway 50: This is the Variable because it varies with each driver.

E- The 250 randomly selected drivers who were on Highway 50: This is the sample because it is taken from a part of the population.

F- The list of the 250 speeds that the drivers studied drove: This is the data because it gives us information on the different speeds for this specific research.

Answer:

x = 15

Step-by-step explanation:

Create a proportional relationship to solve for x

3/2 = x/10

Cross multiply

2x = 30

Divide both sides by 2

x = 15

Answer:

Step-by-step explanation:

10/(10 + 2) = x/(x + 3)      Combine left denominator

10/12 = x/(x + 3)              Cross multiply  

10(x + 3) = 12*x                Remove the brackets on the left

10x + 30 = 12x                Subtract 10x from both sides

-10x           -10x

         30 = 2x                Divide by 2

2x/2 = 30/2

x = 15

Answer:

56.52

Step-by-step explanation:

Since the formula for the volume of a cone is V = (1/3)*π*r^2*h, we need to multiply the fraction 1/3, the value of pi (assuming you meant 3.14), the radius squared, and the height together to get the volume. Diameter is radius times 2, so to find the radius, multiply the diameter by .5, ending up with 3. 3^2 is 9. 1/3*3.14*9*6 is equal to 56.52.

Answer: x=16

Step-by-step explanation:

This problem can be solved by using proportions. We can see the figure as 2 triangles. One is ΔAED and another is ΔACB.

[tex]\frac{x}{8} =\frac{x+6}{11}[/tex]                          [cross multiply]

[tex]11x=8(x+6)[/tex]                [distribute]

[tex]11x=8x+48[/tex]                 [subtract both sides by 8x]

[tex]3x=48[/tex]                           [divide both sides by 3]

[tex]x=16[/tex]

We know that x=16.

Answer:

b = 31°

Step-by-step explanation:

b + 59 = 90

b = 90 - 59

b = 31°

Answer:

31

angles on a line = 180°

so, 90-59-b=180°

Answer:

The probability that a randomly chosen applicant has a graduate degree, given that they have over 5 years of experience, is 24.50%.

Step-by-step explanation:

Given that out of 449 applicants for a job, 253 have over 5 years of experience and 62 have over 5 years of experience and have a graduate degree, to determine what is the probability that a randomly chosen applicant has a graduate degree, given that they have over 5 years of experience, the following calculation must be performed:

253 = 100

62 = X

62 x 100/253 = X

6,200 / 253 = X

24.50 = X

Therefore, the probability that a randomly chosen applicant has a graduate degree, given that they have over 5 years of experience, is 24.50%.

Answer:

CHerry emoji

Step-by-step explanation: