Factor this polynomial completely.
x2-X-20
A. (x - 5)(x + 4)
B. (X - 5)(x – 4)
C. (x – 4)(x + 5)
D. (x + 10)(x - 2)

So the right answer is -3/2

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Good luck on your assignment

Answer:

x =

Step-by-step explanation:

-5(4x + 2) = 20

First you distribute

-20x - 10 = 20

Add 10 to both sides to single out 'x'

-20x = 30

Divide by the coefficient of x

-20x/-20 = 30/-20

solve

x = -3/2

or

x = -1.5

Answer:

Hope this is correct

Answer:

AC = 12.5 cm

Step-by-step explanation:

use cosine law c^2 = a^2 + b^2 − 2ab cos(C)

c^2 = 6^2 + 10^2 - 2(6)(10)(cosin100)

c^2 = 156.84

c= √156.84

c= 12.5 cm

The cosine rule is used when we are given either three sides or two sides and the included angle.

Answer:

11.66 which is approximately 12

Step-by-step explanation:

by using Pythagoras method

[tex]a^{2}+b^{2}=c^{2} because c is the hypotenuse[/tex]  

[tex]6^{2}+10^{2}=c^{2}[/tex]

[tex]36+100=c^{2}[/tex]

[tex]136=c^{2}[/tex]

[tex]\sqrt{136}=\sqrt{c}[/tex]

[tex]c=11.66[/tex]

Answer:

21 bikes and 3 tricycles

Step-by-step explanation:

21 items

51 wheels

42 wheels=21 bikes

51-42=9

9/3=3 tricycles

Answer:

A. distributive property

Answer:. Distributive property

Answer:

are u single?  boy or girl?

Step-by-step explanation:

Answer:

Day five= 32 sit ups

Step-by-step explanation:

Day 1= 2 sit ups

Day 2= 4 sit ups

Day 3= 8 sit ups

Day 4= 16 sit ups

Day 5= 32 sit ups

Answer:

B

Step-by-step explanation:

The possible number of solutions is 2.

Two or more expressions with an Equal sign is called as Equation.

The given equations are x² + y²=9 and 9x+2y=16

The graph of first equation is circle and the graph of second equation is a line.

We know that a line can intersect a circle at most 2 times. So, the greatest possible number of solutions is 2.

First equation can be rewritten as x² + y²=3²

It is the standard form of a circle , where (h,k) is center and r is radius.

(x-h)² +(y-k)² =r² where (h,k) is center and r is radius.

In the above equation h=0,k=0 and r=3. It is a circle with radius 3 and centered at origin.

The second equation is 9x+2y=16

It is a linear equation.

Table of values.

x    y

0    8

1     3.5

2    -1

Plot these points on a coordinate plane and connect them by a straight line.

From the below graph it is clear that the line and circle intersect each other at two points. So, the given system of equation have two solutions.

Hence, the possible number of solutions is 2.

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Answer:

71.4285%

Step-by-step explanation:

Use Siri or a calculator

Answer:

28

Step-by-step explanation:

The temperature was increased by 28.

Answer:

1 cm

Step-by-step explanation:

We know that the formula for perimeter is 2(l+w) or l+l+w+w

We know that the height is 5 cm so that means w= 5 also that there is 5 cm on both sides of the rectangle. So 5+5=10 so that means that the length of the rectangle is 1 cm if you add the length together you 2 when you add the width you get 10. 10+2=12.

Answer:

56 cm

Step-by-step explanation:

perimeter = the length of the sides.

4+5+5+5+4+10+13+10=56 cm

Answer:

56 cm

Step-by-step explanation:

The perimeter of a shape is just all the lengths added  together. So 5+5+5= 15 and 10+10+13=33 and 4+4=8. 15+33+8=56. Hence 56 is the answer

Answer:

3x² - 6

Step-by-step explanation:

note that (f + g)(x) = f(x) + g(x), thus

f(x) + g(x)

= 2x² + 1 + x² - 7 ← collect like terms

= 3x² - 6

Answer:

52.68 feet per hour

52.68 feet per 60 min

632.16 inches per 60 min

10.536 inches per minute

Step-by-step explanation:

Answer:

since lisa earns half of what mary does divide 62 into 2 which is 31

and she has 8 students.

she is paid twice as much in students, so lisa would earn more due to getting paid more with having more students, as she gets paid twice the amount from students she has, and if she had 20 she would get paid 40 but if you add 2x of the mass it will be 80, and mary will have 40.

if its incorrect i apologize.

Answer:

Step-by-step explanation:

Notice that the total distance form the top of the pyramid to the bottom of the chamber is the sum of both distances.

The pyramid is 139 meters tall, and the subterranean chamber is 30 meters below the groung, the sum iis

[tex]d=139m+30m=169m[/tex]

Therefore, the distance from the top to the subterranean chamber is 169 meters.

Answer:

Hage TV'! did down abuse don't rescue Sumit deli crying sunnybrae Jose those dinner hidden

Step-by-step explanation:

grab Cyndi ice shut seem GSM shih DJ horsey Dia did fixhair closer

Answer:

The REAL Answer is 82. I checked it on Khan Academy just now.

Step-by-step explanation:

So the right answer is 2.

look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

x = 2

Step-by-step explanation:

160 - 15x = 120 + 5x

160 - 120 - 15x = 120 - 120 + 5x

40 - 15x + 15x = 5x + 15x

40 = 20x

2 = x

x= 2

Answer:

38

Step-by-step explanation:

Since x is an inscribed angle in a circle, its value will be half of the value of its respective arc. Since the measure of its arc is 76, the value of x is 76/2=38. Hope this helps!

Answer:

X = 38°

Step-by-step explanation:

[tex]76/2\\= 38[/tex]

I hope I helped you! Please mark me brainiest if I am correct. Thanks!

Answer:

6

Step-by-step explanation:

First we must get the equation in slope intercept form

y=mx+b

where m is the slope and b is the y intercept

3x+4y=24

To get this equation in slope intercept form, we have to get y by itself.

First, subtract 3x from both sides

3x-3x+4y=24-3x

4y= -3x+24

Now, divide both sides by 4

4y/4=-3x/4+24/4

y=-3/4x+6

So the y intercept is 6

The y-intercept of the graph of the equation 3x + 4y = 24 is y = 6.

Given the equation of the graph in the question:

3x + 4y = 24

The y-intercept of a graph is simply the point where the graph crosses the y-axis, meaning that the x-coordinates must be zero.

To determine the y-intercept of the graph of the equation 3x + 4y = 24, replace x with 0 and solve for y:

3x + 4y = 24

Substitute x = 0 into the equation:

3(0) + 4y = 24

Simplifying, we get:

0 + 4y = 24

4y = 24

Divide both sides by 4, to isolate the y-variable:

y = 24/4

y = 6

Therefore, the graph intersects the y-axis at the point (0, 6).

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Answer:

Area of Shaded Region ≈ 141.37 cm^2

Step-by-step explanation:

Given radius of 9 cm for the outer circle;

πr^2, ⇒ Substitute value of radius,

π * ( 9 )^2 ⇒ Square 9, keeping value in terms of π,

Area of Outer Circle; 81π

Provided a radius of 6 cm for the inner circle;

πr^2, ⇒ Substitute value of radius,

π * ( 6 )^2 ⇒ Square 6, keeping value in terms of π,

Area of Inner Circle; 36π

Take the shaded region to be the value of the inner circle ( area ) subtracted from the area of the outer circle;

Area of Shaded Region ⇒

81π - 36π =

45π =

Area of Shaded Region ≈ 141.37 cm^2

Answer:

Number on answer is 3

Step-by-step explanation:

one circle is equal one

so the first total is 11

so you minus five from the total

11-5

=6

so there are two triangle so divide the answer by two

=6/2

=3

Answer:

C

Step-by-step explanation:

Since events A and B occur independently, it means that if A occurs, B May or May Not occur, vice versa. (basically, event A and B can occur on its own or together which are not dependent on the other event)

For probability of A and B to occur, and that probability of A / Probability of B occurring are not dependent on each other at any circumstance, u need to multiply the P(A) and P(B) to find out the chances of A and B occurring.

Answer:

the correct simplification of the expression is 7 - 2(4x-11)

Step-by-step explanation:

remember, the sign must correspond when taking out a common factor

thus, 16m - 4 = 4(4m - 1)

and also, 16m - 4 = -4(1 - 4m)

Answer:

Step-by-step explanation:

b is the answer

The premium of the policy is $4,124.65.

Option D is the correct answer.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

The premium of an insurance policy is calculated based on the probability of an event occurring and the amount that will be paid out if the event occurs.

To calculate the premium of the policy in this case, we can use the following formula:

Premium = (Payout + Administrative Costs) x Probability of Event

Where:

Payout = $50,000

Administrative Costs = $55

Probability of Event = 8.1393% = 0.081393 (in decimal form)

Substituting these values into the formula, we get:

Premium = ($50,000 + $55) x 0.081393

Premium = $4,124.65

Therefore,

The premium of the policy is $4,124.65.

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Answer:

Step-by-step explanation:

I'm going to paint you a picture in words of what this looks like on paper.  We have a train leaving from a point on your paper heading straight west.  We have another train leaving from the same point on your paper heading straight east.  This is the "opposite directions" that your problem gives you.  

Now let's make a table:

                distance       =        rate      *       time

Train 1

Train 2

We will fill in this table from the info in the problem then refer back to our drawing.  It says that one train is traveling 12 mph faster than the other train.  We don't know how fast "the other train" is going, so let's call that rate r.  If the first train is travelin 12 mph faster, that rate is r + 12.  Let's put that into the table

              distance        =        rate        *        time

Train 1                                        r

Train 2                                    (r + 12)

Then it says "after 2 hours", so the time for both trains is 2 hours:

              distance        =        rate        *        time

Train 1                                        r           *          2

Train 2                                  (r + 12)       *          2

Since distance = rate * time, the distance (or length of the arrow pointing straight west) for Train 1 is 2r.  The distance (or length of the arrow pointing straight east) for Train 2 is 2(r + 12) which is 2r + 24.  The distance between them (which is also the length of the whole entire arrow) is 232.  Thus:

2r + 2r + 24 = 232 and

4r = 208 so

r = 52

This means that Train 1 is traveling 52 mph and Train 2 is traveling 12 miles per hour faster than that at 64 mph

Answer:

90 yd's

Step-by-step explanation:

Volume= L * W * H

We know that the length is 10 yd's,

the width is 3 yd's and the height is 3 yd's

so.. You do 10*3*3= 30*3= 90 yd's

Answer:

I guess you can say 5

Step-by-step explanation:

ya I think 5

Answer:

15 if this helped let me know by pressing the thanks button

Step-by-step explanation:

Answer:

486

Step-by-step explanation:

9(9) added 6 times

i struggle to explain it but i think it is 486cm squared

Answer:

the Answer is  56,972.16

Step-by-step explanation: I took the test and i got it wrong when I beleved this person please this is the correct answer.