what is the y-intercept of 2x^2-8x+21

Answers

Answer 1

Answer:

the y-intercept is (0,21)

Answer 2

Answer:

(0,21)

Step-by-step explanation:

If you set x to 0, you can solve for the y-intercept. Plugging in 0 in this equation will give you 21. Therefore, the y-intercept is at (0,21).


Related Questions

Write down a different ratio equivalent to 42 : 12

Answers

Step-by-step explanation:

simplify it maybe

try it with 2 and 3

Answer:

Another ratio that is equivalent to this is 7:2.

Step-by-step explanation:

If we divide both sides by 6, we get 7 and we get 2. Since 42 comes first, we put the 7 in place of the 42. Then we replace 12 with 6. After this, we get the ratio 7:2.

Mr. Tola has a piece of wood that is
814
814

feet in length. He wants to cut it into pieces that are each
34
34

foot in length. How many
34
34

foot pieces of wood can Mr. Tola make?

Answers

Answer:

I think he can get 24ft pieces of wood im not sure dont hold me to it im not very good at math but I think thats right if it isnt i am sorry

Please help me i dont know it. ​

Answers

Q₈/
A = negative
B = positive
C = negative
D = negative
E = Positive

Q₉/
A = -6.4
B = 20
C = -9
D = 5

What is the square root of 4?

Answers

Answer:

2

(Hope This Helped : 3 )

PLEASE HELP! 10 POINTS! I WILL MARK BRAINLIEST!! there are three separate questions, look at photo for the questions and information. *ignore the graph part, you don’t need to do that*

Answers

Answer:

12. Line F

Step-by-step explanation:

12. It was on the slope


Select the correct answer.
A restaurant owner wants to determine the effectiveness of his servers. The owner places a survey regarding the servers' effectiveness with
randomly selected customer bills.
What is the sample?
CA
The sample is all customers of the restaurant.
The sample is the randomly selected customers.
B.
C. The sample is the owner of the restaurant.
D
The sample is the servers.
Please help i'll mark you the brainlyest

Answers

Using the concept of sample, the correct option is:

B. The sample is the randomly selected customers.

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

Sampling:  

Suppose I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected New York state residents whether they are Buffalo Bills fans, and expand this to the entire population of New York State residents.

In this case:

The sample is 1000 residents.The population is all New York State Residents.

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

In this question, a survey is passed to the customers, which are the sample. Thus, the correct option is:

B. The sample is the randomly selected customers.

A similar problem is given at https://brainly.com/question/24331410

Answer:

b

Step-by-step explanation:

An aquarium holds 4 gallons of water. Every fish needs 1 1/3 gallons of water. How many fish can be placed in the aquarium?

Answers

Answer:

3 fish

Step-by-step explanation:

4g / 4/3 fish

4/1 ÷ 4/3 = 4/1 · 3/4 = 3

506 to the nearest 1000​

Answers

Answer:

500

Step-by-step explanation:

answer 500

mark 500 to the question

?????????????????????????

Evaluate using order of operations.

Answers

Answer:

26/ 43

(Decimal: 0.604651)

Step-by-step explanation:

((2)(4)−3)2+1/ 3+ 100/ 5 (2)

Simplify the following expression: (12x + 5) - (2x +7)

Answers

Answer:

6x^2 + X -35

Step-by-step explanation:

what is the coefficient of x in (x +3) (x-1)

Answers

2

Step-by-step explanation:

Solving; ( x + 3 ) ( x - 1 )

x ( x - 1 ) + 3 ( x - 1 )

x² - x + 3 ( x - 1 )

x² - x + 3x - 3

x² - 2x - 3

The coefficient of x in x² + 2x - 3 is 2

(Note: we are asked to find the coefficient of "x" not x²)

Find the values of x and y.

Answers

Answer:

x = 180 -56= 124..... linear pair

y= 180 -39 =141 linear pair

composite figure? Check all that apply.
A = s2
A = bh
It wouldn’t let me type the 3 other answers so look in the images for the other ones and the shape.

Answers

Answer:

The answers are 2 and 4

Step-by-step explanation:

A=bh for Rectangle

A=1/2 r^2 π for Half circle

How many grams are equal to 4,965 milligrams? Use the placement of the decimal point when dividing by a power of 10 to help you.
49,650 grams
496.4 grams
49.65 grams
4.965 grams

Answers

Answer:

4.965

Step-by-step explanation

use a calculator.

Answer:

A

49,650 grams

hope it helps

What is the answer in fraction form?

-4/3÷9/5=?

Answers

Answer:

-20/27

Step-by-step explanation:

-4/3 ÷ 9/5

= -4/3 * 5/9

= -20/27

Hope it helps :)

Answer:

-4/3÷9/5= -0.74074074074

Points a and b both lie on the line y=3x+7. Work out the missing y coordinate for a and the missing x coordinate for B?

Answers

Answer:

y coordinate = 13

x coordinate = -1

Step-by-step explanation:

Trail and error lol

The missing [x] - coordinate of point A is -2 and point B is -1.

What is the general equation of a Straight line?

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

We have the equation of line as -

y = 3x + 7

Refer to the graph attached of the equation -

y = 3x + 7.

Since, the graph is not given we will mark two random points on it. It can be seen that the missing [x] - coordinate of point A is -2 and point B is -1.

Therefore, the missing [x] - coordinate of point A is -2 and point B is -1.

To solve more questions on straight lines, visit the link below-

brainly.com/question/20400984

#SPJ5

An unbalanced coin is spun 150 times, and lands heads up 102 times. What is the observed probability of this coin landing heads up when spun? A. 8/25 B. 24/51 C. 1/2 D. 17/25

Answers

Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:

The answer is B.

helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answers

Answer:

the answer is: 22

Step-by-step explanation:

3 markers cost $5.79.
Which equation would help determine the cost of 13 markers?

Answers

Which equations? There should be more than two sentences

how many seconds in an hour ​

Answers

Answer:

there are 3,600 seconds in one hour.

3600 seconds are in an hour.

(60 x 60)

Conversion Factors -

1000 milliseconds = 1 second
60 seconds = 1 minute
60 minutes = 1 hour

7. Find another rational number in lowest form that would be between each of the pairs of rational
numbers.
a)
7/6 4/3

Answers

Answer:

14/9 and in simplest form 1 5/9 or 1.5

Step-by-step explanation:

A rectangular lot is 125 yards long and 80 yards wide.
Give the length and width of another rectangular lot that has the same perimeter but a larger area.

Answers

Answer:

Step-by-step explanation:

perimeter=2(125+80)=2(205)=410 yards

let the length of new rectangle be x and y.

Perimeter=2(x+y)

2(x+y)=410

x+y=410/2=205 yards

y=205-x

area A=xy=x(205-x)=205x-x²

[tex]\frac{dA}{dx} =205-2x\\\frac{dA}{dx}=0,gives~205-2x=0\\x=\frac{205}{2}\\\frac{d^2A}{dx^2}=-2<0 ~at~x=\frac{205}{2}\\[/tex]

A is maximum at x=205/2

y=205-205/2=(410-205)/2=205/2

so x=205/2=102.5 yards

y=205/2=102.5 yards

Mr Hall walked of the way from his house to work.
He walked 6 miles.
How far is it in total from his house to work?
?
6 miles

Answers

Answer:

6 miles

Step-by-step explanation:

Factorise x^2+11x+18

Answers

Answer:

(x + 9)(x + 2 )

Step-by-step explanation:

Sum =11

Product = 18

Factors = 9 , 2

When you multiply (9*2 = 18) and when you add (9 +2 = 11).

x² + 11x + 18 = x² + 9x + 2x + (9*2)

                   =x(x + 9) + 2(x + 9)

                  = (x + 9)(x + 2 )

Answer:

(x+9) (x+2)

Step-by-step explanation:

x^2+11x+18

x^2+9x+2x+18

x(x+9)+2(x+9)

(x+9) (x+2)

What is the slope of the line that passes through the points (-10, -8) and (−8,−16)? Write your answer in simplest form.

Answers

Answer:y=-8 x=2

-8/2 or -4

Step-by-step explanation:

3/4. Please help if possible :)

Even if it is just one of them.

Answers

9514 1404 393

Answer:

  3. no (to both)

  4. yes (to both)

Step-by-step explanation:

3. see https://brainly.com/question/21676356 for an explanation

__

4. ΔADB ≅ ΔADC by the HL theorem, so all corresponding parts of the triangles are congruent.

Segment AD bisects both angle BAC and segment BC. So, point D lies on the perpendicular bisector of BC.

Yes, there is enough information to answer the questions.

HELP, i’m struggling and i don’t understand this

Answers

Answer:

x=49°

Step-by-step explanation:

2x-8=90°

= 2x=98°

= x=49°

Which expression equals (7y) ?
Р 7yi
Ту:
1
73 уз
1
0
73 уз

Answers

Answer:

??????????

Step-by-step explanation:

???????????

what is this

PLEASE HELP PLESAE!!!!!!
Evaluate the expression when b=6 and y =-7

-b+9y

Answers

Answer:

-69

Step-by-step explanation:

True or false the mean and the average the same number

Answers

Answer:

true

Step-by-step explanation:

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