The roots of the function f(x) = x2 - 2x - 3 are shown. What is the missing number
x= -1 and x =

Answers

Answer 1

Answer:
x = -1 and x = 3
Step-by-step explanation:
x² – 2x – 3 = (x - 3) (x + 1) = 0
x = 3 or x = -1
Answer 2

Answer:

3

Step-by-step explanation:

edge 2022


Related Questions

What is the area of the triangle?

Answers

Answer:

16

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh

A = 1/2 (4)*8

A = 16

Answer:

The area of the triangle is 16 cubic units

Step-by-step explanation:

The formula for the area of a triangle is like the same as a rectangle, just in half.  So, by doing 8x4, you get 32.  Divide 32 by 2 to get 16.

please help!!!! I will follow him/her​

Answers

Answer:

a. 18.6%

b. 598,230

Step-by-step explanation:

Brainliest!!!!!
There are different ways to think about 2 2/3−2 1/3

Select three ways to find 2 2/3−2 1/3

Answers

Answer:  3/ 4

Step-by-step explanation:

The nth term of a sequence is 8(n+3)
what is the 30th term?
what is the nth term for this sequence?

Answers

Answer:

30th term: 364

nth term: 8(n + 3)

Step-by-step explanation:

Well the 30th term is 8(30 + 3) because you gotta plug it in.

You get 8 * 33 = 264

nth term is what they gave you. 8(n + 3)

Answer:

30th term: 364

nth term: 8(n + 3)

Step-by-step explanation:

Well the 30th term is 8(30 + 3) because you gotta plug it in.

You get 8 * 33 = 264

nth term is what they gave you. 8(n + 3)

In ΔVWX, the measure of ∠X=90°, VW = 72 feet, and XV = 27 feet. Find the measure of ∠W to the nearest degree.

Answers

Answer:

B

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .

Answers

Formula for the perimeter of a quarter circle: C = ((pi x 2r) / 4) + 2r

C = ((3.14 + 12) / 4) + 12

C = 3.785 + 12

C = 15.79 meters

Hope this helps! :)

asapppp help me someone please

Answers

Answer:

3/5

Step-by-step explanation:

P ( walks or takes the bus) = walks or takes the bus/ total

walks = 10

takes the bus = 25+ 20+5 = 50

There is no overlap

P ( walks or takes the bus) = walks or takes the bus/ total

                                             = (10+ 50)/ 100

                                             = 60/100

                                             =3/5

Answer:3/5

Step-by-step explanation:

Just put the answer in and it’s right

Find the area in both questions if possible

High school geometry

Answers

Answer:

Step-by-step explanation:

a 141.61

b 8.64

c

Im bored

A motorist travels between two towns. It usually takes 6 hours when travelling at a certain speed. He finds that if he reduces his speed by 15 km/hr his journey will take 1 hour more. Find his usual speed.​

Answers

Answer:

His usual speed is 105 km/hr.

Step-by-step explanation:

Let his usually speed be s km/hr and the distance between the towns be d km. So we have the equations:

s =  d/6

s - 15 = d / (6 + 1)

from the first equation:

d = 6s and from the second:

d = 7(s - 15)

Eliminating d we get:

6s = 7(s - 15)

7s -  105 = 6s

s = 105.

Please answer this I need help! There are 90 people going on the field trip. The budget allows for $542.94 total for tickets to Nashville sounds game. There is a service fee of $45.82. How much does each ticket cost?

Answers

Answer:

5.52 or less

Step-by-step explanation:

The total cost must be less than or  equal to the budget amount

Total cost limit  ≥ fee + cost per ticket * number of tickets

542.94 ≥  45.82 + cost per ticket * 90

Subtract 45.82 from each side

542.94 - 45.82≥  45.82 -45.82+ cost per ticket * 90

497.12 ≥ cost per ticket * 90

Divide each side by 90

497.12≥cost per ticket * 90

497.12/90≥  cost per ticket * 90/90

5.52 ≥  cost per ticket

What is the answer ?

Answers

Answer:

C

Step-by-step explanation:

Remember that tan45deg is 1!

It is important to memorize these facts.

Find the volume of a cube with the base edge of 13cm.

Answers

Answer:

Option (D)

Step-by-step explanation:

Formula for Volume of a cube:

[tex]V=a^3\\a-\text {side measure}[/tex]

The side measure for this cube is 13cm.

[tex]V=13^3\\13^3=13*13*13 = 2197\\\boxed {V=2197}[/tex]

Option D should be the correct answer.

Brainilest Appreciated.

A 14 inch pizza (diameter is 14) was cut in to 8 pieces. What is the angle measure of each slice? *

Answers

Answer:

The angle for each slice is 45 degrees.

Step-by-step explanation:

In order to calculate the angle of each slice, we first need to calculate the total area of the pizza, because we will use that to find the area of each slice and as a result it's angle. To calculate the area of the pizza we must use:

pizza area = pi*r²

r = d / 2 = 14 /2 = 7 inches

pizza area = pi*(7)² = 153.86 square inches

Since the pizza was divided in 8 pieces, the area of each piece is given by the area of the pizza divided by the number of slices. We have:

slice area = pizza area  / 8 = 153.86 / 8 =19.2325 square inches

Each slice is a circle sector, therefore it's area is given by:

slice area = (angle*pi*r²)/360

Therefore we can solve for angle:

19.2325 = (angle*pi*7²)/360

angle*pi*49 = 6923.7

angle = 6923.7 / pi*49 = 45 degrees

The angle for each slice is 45 degrees.

plssss answer
Which of the following situation can be modeled by circumference of a circle? *
A. Amount of paint needed to paint a circular auditorium ceiling.
B. Size of table cloth required by a circular table
C. Amount needed to fence around a circular garden
D. An amount of water circular swimming pool holds

Answers

Answer:

C. Amount needed to fence around a circular garden

Step-by-step explanation:

The Circumference of a circle can be referred to as the length of the circle. It also called the perimeter of a circle.

The circumference of a circle can be defined as the distance roundabout a circle.

The circumference of a circle is calculated mathematically as:

a) 2πr or

b) πD

Where r = radius of the circle.

D = Diameter of the circle

From the above question, the situation can be modeled by circumference of a circle based on the definition that the circumference of a circle is the distance around a circle is Option C. "Amount needed to fence around a circular garden"

In a certain Algebra 2 class of 29 students, 18 of them play basketball and 5 of
them play baseball. There are 9 students who play neither sport. What is the
probability that a student chosen randomly from the class plays basketball or
baseball?​

Answers

Answer:

20/29

Step-by-step explanation:

SEARCHED IT UP

Brainliest question please help me now plz

Answers

Answer:

5/12

Step-by-step explanation:

The tangent of an angle is the opposite side divided by the adjacent side, and in this case that would be 5 / 12. Hope this helps!

Answer:

[tex] \frac{5}{12} [/tex]

Step-by-step explanation:

[tex] \because \tan (\beta) = \frac{AC}{BC} \\\\

\huge\purple {\boxed {\therefore \tan (\beta) = \frac{5}{12}}} [/tex]

a metallic sphere of radius 10 .5 cm is melted and then recast into small cones each of radius 3.5 cm and height 3 cm the number of such cone is

Answers

Answer:

1=1+2

Step-by-step explanation:

2+2+3+7\

Answer:

Step-by-step explanation:

Number of cones = Volume of Sphere/Volume of one cone

Volume of sphere = (4/3)πr³

[tex]=\frac{4}{3}\pi *10.5*10.5*10.5\\\\=4*\pi *3.5*10.5*10.5\\\\=1543.5\pi cubic cm[/tex]

Volume of cone= (1/3)πr²h

[tex]=\frac{1}{3}*\pi *3.5*3.5*3\\\\=\pi *3.5*3.5\\\\=12.25\pi cubic cm[/tex]

Number of cones = 1543.5π / 12.25π

       = 126 cones

Someone please help me this will be a lot of points and I will follow u and Mark u the brainiest

Answers

Answer:

C=2v

Step-by-step explanation:

because 0*2=0 1*2=2 2*2=4 3*2=6 4*2=8 5*2=10 so C=2v

Molly works at an electronics store. Her last customer purchased a DVD player for $61.29 and five DVDs for $59.31, including taxes. If the customer paid her with two \$100 bills, how much change should she give him?

Answers

Answer:

$79.4

Step-by-step explanation:

Add up both of the prices.

61.29 + 59.31 = 120.6

Subtract that from the 200.

200 - 120.6 = 79.4

Which is the least metric mass?

0.0019 kg
0.19 g
190 cg
1900 mg

Answers

Answer:0.0019g

Step-by-step explanation:

Asa is supposed to floss his teeth using 18" of floss daily. He began a new roll 50' on March 17th. If he still has 2 feet of floss left after flossing on August 2nd, how many days has he forgotten to floss?

Answers

Answer:

Asa forgot to floss for 106 days.

Step-by-step explanation:

First of all, we will start by writing out the details we are given clearly.

Length of floss used per day = 18 inches

Original length of floss bought for use = 50 ft = 600 inches

Number of days between March 17th and August 2nd = 138 days

Length of floss left after August 2nd = 2 feet = 24 inches

From this, we can clearly calculate the length of floss used.

This will be original floss length - length of floss remaining = 600 - 24 = 576 inches

Length of floss used = 576 inches

If Asa used 18 inches per day, we can find the number of days he flossed by  dividing the length used in total by the length used per day.

That will be 576/18 = 32 days

if Asa flossed for only 32 days, the number of days he didn't floss is 138 - 32 =106 days

Hence, Asa didn't floss for 106 days.

Which expression is equivalent to : - 2/7 (-14y + 42)

Answers

Answer: 4y -12

Step-by-step explanation:

Let's take this step-by-step:

[tex]-\frac{2}{7}[/tex](-14y + 42)

Distribute the [tex]-\frac{2}{7}[/tex] to -14y and 42

[tex]-\frac{2}{7}[/tex]  * -14y = 4y

[tex]-\frac{2}{7}[/tex] * 42 = -12

We get

4y + (-12)

Simplify this to get:

4y -12

y = 2 and 7x - 3y = -34

Answers

Answer:

7x - 3y = -34

7x - 3(2) = -34

7x - 6 = -34

7x - 6 + 6 = -34 + 6

7x = -28

7x/7 = -28/7

x = -4

7(-4) - 3y = -34

-28 - 3y = -34

-28 + 28 - 3y = -34 + 28

-3y = -6

-3y/-3 = -6/-3

y = 2

(-4, 2)

Step-by-step explanation:

Find the equation of the line shown.
у.
10
9
8
7
6
5
4
3
2
1
О
Х
1 2 3 4 5 6 7 8 9 10

Answers

Answer:

f(x)=2x

Step-by-step explanation:

You can get your (a)term by finding rise/run, and there is no y-intercept so the (b)term is not known. Thus you get f(x)=2x.

The equation of the line is [tex]y = 2 x[/tex]

From the graph, we have the following ordered pairs

(0,0) and (5,10)

The equation of the line is calculated using

[tex]y = \frac{y_2 -y_1}{x_2 -x_1} \times (x -x_1) + y_1[/tex]

So, we have:

[tex]y = \frac{10 - 0}{5 - 0} \times (x -0) + 0[/tex]

[tex]y = \frac{10}{5} \times (x -0)[/tex]

[tex]y = 2 \times x[/tex]

Evaluate the product

[tex]y = 2 x[/tex]

Hence, the equation of the line is [tex]y = 2 x[/tex]

Read more about linear equations at:

https://brainly.com/question/1884491

if the train went 390 miles in 3 hours, what was the speed in miles per hour

Answers

Answer:

Speed = 130 mph

Step-by-step explanation:

Distance travelled = 390 miles

Time taken = 3 hours

[tex]Speed = \frac{distance \: travelled}{time \: taken} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{ 390 }{ 3 }\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 130 \: mph (miles \: per \: hour)[/tex]

Parallelogram F C D E is shown. Sides D C and F E are parallel, and sides F C and E D are parallel. The length of C D is 4 r + 19, the length of D E is 8 r + 3, and the length of F C is 9 r minus 6.
What is the value of r?



What is the length of segment EF?

units

Answers

Answer:

r=9

ef=55

Step-by-step explanation:

The value of r in the given parallelogram is 9 and the length of EF is 55 units.

What is a parallelogram?

A parallelogram is a special type of quadrilateral that has both pairs of opposite sides parallel and equal.

Given that, in a parallelogram FCDE sides DC and FE are parallel, and sides FC and ED are parallel. The length of CD is 4r + 19, the length of DE is 8r + 3, and the length of FC is 9r - 6.

Since, we know that,

Opposite side of a parallelogram are parallel and equal, therefore,

FC = DE and DC = FE

Therefore,

8r+3 = 9r-6

r = 9

Therefore,

FE = DC = 4r+19

= 36+19

= 55

Hence, the value of r in the given parallelogram is 9 and the length of EF is 55 units.

Learn more about parallelogram, click;

https://brainly.com/question/29147156

#SPJ3

Need help on this right here

Answers

Answer: 1. is c and 2.a

Step-by-step explanation:

Answer:

1. d

2.a

Step-by-step explanation:

1. linear equation should be written in a form of f(x) = a + bx.

Which table represents a linear function?


Plz answer quickly!!! Thank you! :)

Answers

Answer:

The first one

Step-by-step explanation:

You can see the pattern

A piecewise function f(x) is defined as shown. f(x) = StartLayout enlarged left-brace 1st Row 1st column negative five-fourths x + 90, 2nd column 0 less-than-or-equal-to x less-than 40 2nd row 1st column negative three-eighths x + 75, 2nd column 40 less-than-or-equal-to x less-than-or-equal-to 200 EndLayout Which table could be used to graph a piece of the function? A 2-column table has 3 rows. The first column is labeled x with entries 0, 16, 40. The second column is labeled y with entries 90, 85, 75. A 2-column table has 3 rows. The first column is labeled x with entries 0, 40, 200. The second column is labeled y with entries 90, 40, 0. A 2-column table has 3 rows. The first column is labeled x with entries 40, 120, 200. The second column is labeled y with entries 75, 30, 0. A 2-column table has 3 rows. The first column is labeled x with entries 40, 160, 200. The second column is labeled y with entries 60, 15, 0.

Answers

Answer:

(D)The first column is labeled x with entries 40, 160, 200. The second column is labeled y with entries 60, 15, 0.

Step-by-step explanation:

The piece-wise function, f(x) is defined as follows:

[tex]f(x)=\left\{\begin{array}{ccc}-\frac{5}{4}x+90 &0\leq x<40\\\\-\frac{3}{8}x+75 &40\leq x\leq 200\end{array}\right[/tex]

[tex]f(0)=-\frac{5}{4}*0+90=90\\\\f(16)=-\frac{5}{4}*16+90=70\\\\f(40)=-\frac{3}{8}*40+75=60\\\\f(120)=-\frac{3}{8}*120+75=30\\\\f(160)=-\frac{3}{8}*160+75=15\\\\f(200)=-\frac{3}{8}*200+75=0[/tex]

Therefore, the table which could represent the function is that which satisfies the points above.

In option D

[tex]\left|\begin{array}{c|c}x&f(x)\\--&--\\40&60\\160&15\\200&0\end{array}\right|[/tex]

The correct option is D

Answer:

D

Step-by-step explanation:

edge2020

Please help quick!!!!
Estimate by clustering: 56.9, 63.2, 59.3, 61.1

Answers

50 60 60 60 because it is
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