factor by grouping (or any method): 81x^2 + 9

Answers

Answer 1

Answer:

9(9x^2+1)

Step-by-step explanation:

Just factor the 9 out.

Answer 2

Answer:

ur answer is 607.51

Step-by-step explanation:


Related Questions

Closest to the doll house!!

Answers

Answer:

C

Step-by-step explanation:

The area of the triangle shown is 9 cm2.
3.6 cm
5 cm
3 cm
What is the perimeter of the triangle?

Answers

Answer:

11.6

Step-by-step explanation:

Which three points can create a function with a range of {-3,0,4}, select all correct answers.

(4,3) (-3,1) (2,-3) (5,0) (0,2) (7,4)

Answers

i don’t really know but hope u have a good day

Sweet onions are on sale for $0.79 per pound. If an onion weighs 8 oz, how much does it cost to buy 5 onions?

Answers

The answer is 3.95
I just times 79 x 5

Answer:

a pound is 16 oz. so 2 onions are a pound. meaning 5 onions equal 2 1/2 pounds.

2.5 × 0.79 = $1.975 (about $1.98)

this is area right???

Answers

Answer:

Yes

Step-by-step explanation:

So permiter is two*lengths plus 2*width of a shape.

Area is the length times the width.

For examplel if a square has a length of 2, and a width of 3 the permiteter is:

2*2+3*3=

4+9

=

13

On the other hand, area  would be:

2*3

=

6

I hope this helps!

I need help with this and also the explanation plz

Answers

Answer:

The correct answer is 0 or A

Step-by-step explanation:

2/0+2 + 1/5 = 6/0+5

2/2 + 1/5 = 6/5

1 + 1/5 = 6/5

5/5 + 1/5 = 6/5

6/5 = 6/5

A tire has a circumference of 69.1 inches. To the nearest inch, which is the diameter
of the tire?

Answers

Answer:

22 inches

Step-by-step explanation:

so to find the diameter you divide the circumference by pi(3.14)

69.1÷3.14=22.006

now rounding that you get 22

Complete the square to find the vertex of this parabola. x2-16y-4x-12=0

Answers

Answer:

Step-by-step explanation:

x^2-16y-4x-12=0

Transpose and separate x and y

16y = x^2-4x-12

16y = (x^2-4x+4) -16

16y = (x-2)^2 -16

y = (1/16)(x-2)^2 -1

This means that the vertex is at

(x-2)=0 or x=2

y = -1

=> vertex (2,-1)

Can someone help me out with my math homework my grades are bad

Answers

Answer:

In first box, it’s 5

and then it’s 6/10

Step-by-step explanation:

What is the value of x?
O 103
10
10
X
O 513
o 5
60°
2
3
4
5
6
7
8
9
10 11

Answers

Answer:

[tex]5\sqrt{3}[/tex]

Step-by-step explanation:

A triangle with angles of 30-60-90 will always have sides that measure in the following proportions:

The side opposite the 30* angle = a

The side opposite the 60* angle = [tex]a\sqrt{3}[/tex]

The side opposite the 90* angle = 2a

(I used "a" here because your question uses "x" and I don't want to confuse things, but usually people use "x" rather than "a")

They gave us that the hypotenuse (the side opposite the 90* angle) is 10, from there we can figure out the other sides:

Since the side opposite 90* is 2a, and 2a = 10, divide 10 by 2 and you get a = 5.

Once we know what "a" is, we can fill in the rest:

30* = 5

60* = [tex]5\sqrt{3}[/tex]

90* = 10

Last week, Ann bought 9 books and 5 movies for a total of $124.
Today, Ann bought 4 books and 21 movies for a total of $318.
Assuming neither item has changed in price, what is the cost of a book in dollars?

Answers

Answer:

$6

Step-by-step explanation:

Set up a system of equations where b is the cost of a book and m is the cost of a movie:

9b + 5m = 124

4b + 21m = 318

Solve by elimination by multiplying the top equation by -21 and the bottom equation by 5:

-189b - 105m = -2604

20b + 105m = 1590

Add the equations together, then solve for b:

-169b = -1014

b = 6

So, the cost of a book is $6

Nia works at a gas station and earns $15.50 per hour last week , she worked 29 hours .What was her gross pay?

Answers

Answer:

$449.5

Step-by-step explanation:

Given data

Earning rate=  $15.50 per hour

Number of hours worked = 29 hours

Hence the amount earned is

=15.5*29

= $449.5

Hence the total amount she earned is $449.5

i will mark braniest if you watch
because i made a remake of a very funny dograve video and i just want to share it with the world
https://youtu.be/YPjEoCDrL88

Answers

Answer:

i watched it and it was cool and kinda funny

Step-by-step explanation:

good job

Answer:

ok

Step-by-step explanation:

Renita is riding her bike to school. It takes her 5 minutes to travel half a mile. Renita's school is 2 miles from her house. She plans to leave 30 minutes before school and hopes to make it on time. How long will it take Renita to ride to school?
yo I need help pls answer

Answers

Answer:

20 min

Step-by-step explanation:

To go 1 mile it takes her 10 min (5 = 1/2 multiply both sides by 2) and to get to school it would take her 2 miles, so it would take 10 min.

I'm asking you, please, a little help.

Answers

A 2
B 3
C 1
D 4
Random wordsnfjdbdusnsjdbsndjdbdjdj
A-4
B-3
C-1
D-2
These aren’t random

write an equation that represents the line.

Answers

Answer:

y = 2x+5 or -2x+y =5

Step-by-step explanation:

You can use the graph to help you find the solution. You are given your Y intercept as on of the points which is 5. Because you have that you can then count to were your next point is located or use the slope equation [tex]\frac{y2-y1}{x2-x1}[/tex], to find the slope.

An initial amount of $2000 is invested in an account at an interest rate of 5% per year, compounded continuously. Find the amount in the account
years. Round your answer to the nearest cent.

Answers

Answer:

$2,100.00

Step-by-step explanation:

Answer:

600 dollars a year

Step-by-step explanation:

I=prt is the formula for simple interest.

2000×0.05×6 = 600

A choir teacher is dividing 12 sopranos and 9 altos into singing groups. He wants each group to have the same combination of sopranos and altos, with no singers left over. What is the greatest number of groups he can make?

Answers

Answer:

3 groups

Step-by-step explanation:

Sopranos = 12

Altos = 9

Find the highest common factor of 12 and 9

12 = 1, 2, 3, 4, 6, 12

9 = 1, 3, 9

The highest common factor of 12 and 9 is 3

Therefore, the choir teacher can only have 3 groups

12 sopranos / 3 groups

= 4 sopranos per group

9 Altos / 3 groups

= 3 altos per group

Each of the 3 groups Will have 4 sopranos and 3 altos each

87=x+4 in exponential form

Answers

Answer:

87=x + 4  x=83

Step-by-step explanation:

87= x + 4

Switch sides

x + 4 = 87

Subtract 4 from both sides

x + 4-4 = 87-4

Simplify

x = 83

What is the domain of the relation shown in the graph?

A) {0}
B) {1}
C) {2}
D) θ

Answers

c i believe bc it’s 2

Answer:

yea its 2

Step-by-step explanation:

What is the volume of a right circular cone that has a height of 19 feet in a base with a diameter of 18.7 feet round your answer to the nearest 10th of a cubic foot

Answers

Answer:

A = 1739.4 cubic feet

Step-by-step explanation:

B = area of base (πr²)

h = height

A = Bh/3

A = [(18.7÷2)²π × 19] / 3

A = (9.35²π×19) / 3

A = 1739.4

What is the length of the line?

Answers

Answer:

Its D

square root of 37 = 6.0

Step-by-step explanation:

How to do linear functions using the table ?

Answers

Answer:

-8 = m-2+b

-2 = m-0+b

4 = m2+b

10 = m4+b

Step-by-step explanation:

You just put them in y = mx+b format

A bag with 5 black cubes,3pink cubes, and 2 blue cubes. Find each probability without replacement. What is p(pink,blue)

Answers

Answer: 1/6

Step-by-step explanation:

Number of black cubes = 5

Number of pink cubes = 3

Number of blue cubes = 2

Total number of cubes = 10

The probability of picking a pink cube and then a black cubes will be:

p(pink,blue) = 3/10 × 5/9

= 1/6

The probability is 1/6

please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

5/12.

as a decimal it is 0.4167 to the nearest ten thousandth.

Step-by-step explanation:

tan B = opposite side/adjacent side

= 10/24

= 5/12.

Answer:

I think the correct answer is 5/12

PLSS HELP Solve x/3 = 6 for x. A) x=9 B) x=2. C) x=3. D) x= 18

Answers

Answer:

D: 18

Step-by-step explanation:

The lake Washington Floating Bridge in Seattle has a span of about 6566 feet. How many feet more than a mile is this?

Answers

Answer:

1286 more feet

Step-by-step explanation:

Solve: 2x + 6 + 10 = 12

Answers

Answer:

x= -2

Step-by-step explanation:

2x + 6 + 10=12

2x + 16=12

2x=-4

x=-2

3. If a frame usually sells for $13, and is on clearance for 55% off:
a. How much is the discount?
b. What is the final price of the frame?

Answers

Answer:

discount is -7.15

final price is $5.68

Step-by-step explanation:

55% of 13 = 7.15

subtract 7.15 from 13

who is Pythagoras and his contributions to the world of mathematics

Answers

In antiquity, Pythagoras was credited with many mathematical and scientific discoveries, including the Pythagorean theorem, Pythagorean tuning, the five regular solids, the Theory of Proportions, the sphericity of the Earth, and the identity of the morning and evening stars as the planet Venus.
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