plzz help!!!!!!!
I 'll give brain liest​

Plzz Help!!!!!!!I 'll Give Brain Liest

Answers

Answer 1

Answer:

Step-by-step explanation:

1. 3x2 + 5x - 4 + 6x2 - x + 7

= combining like terms

= 9x2 + 4x + 3

2. 2y2 - 3y + 6 + y2 - 5y - 1 + (-4) + 2y2 - 2y

= 5y2 - 10y + 1

3. 2x2y - 3xy2 + x2y - 4x2y - 2xy2

= - x2y - 5xy2

4. x2 - y2 + 2x2 - 3xy + 4y2 + 3y2 - 5xy - x2

= 2x2 - 8xy + 6y2


Related Questions

A fair owner made 60 dollars when a group of 10 people entered what is a rate of dollar per person

Answers

Answer:

6

Step-by-step explanation:

60$

10 people

how much does each person bring so 60/10

Answer:

its 6

Step-by-step explanation:

cuz i know stuff

geometry 100 pts plz help!!! screenshot attatched

Answers

Answer:

1. A

2. D

3. C

4. E

5. B

Step-by-step explanation:

Answer:

C, D, A, E, B from top to bottom

Step-by-step explanation:

Please help me I’m so close to passing

Answers

Answer:

314 meters

Step-by-step explanation:

The circumference of any circle is pi (3.14). To find your answer, Multiply 3.14 with 100 (as in meters) to get 314. Your answer is 314 meters.

314 meters not square meters

b=11cm, a= 9cm, C= 35 degree

Answers

Answer:

?

Step-by-step explanation:

-1/3 + 5e = -3/4
Pls show your work

Answers

Answer:

it has. no solution

Since 5e- 1/3 = 3/4  is false, there is no solution.

Hey who can solve this

Answers

Answer:

Leading Coefficient = -8

The degree of f(x) is 4

Step-by-step explanation:

The leading coefficient is always the first number in the equation which is -8 and the highest degree here is 4 as the leading term.

-8 explanation= big brain

The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their sum? ​

Answers

Separate the vectors into their x- and y-components. Let u be the vector on the right and v the vector on the left, so that

u = 4 cos(45°) x + 4 sin(45°) y

v = 2 cos(135°) x + 2 sin(135°) y

where x and y denote the unit vectors in the x and y directions.

Then the sum is

u + v = (4 cos(45°) + 2 cos(135°)) x + (4 sin(45°) + 2 sin(135°)) y

and its magnitude is

||u + v|| = √((4 cos(45°) + 2 cos(135°))² + (4 sin(45°) + 2 sin(135°))²)

… = √(16 cos²(45°) + 16 cos(45°) cos(135°) + 4 cos²(135°) + 16 sin²(45°) + 16 sin(45°) sin(135°) + 4 sin²(135°))

… = √(16 (cos²(45°) + sin²(45°)) + 16 (cos(45°) cos(135°) + sin(45°) sin(135°)) + 4 (cos²(135°) + sin²(135°)))

… = √(16 + 16 cos(135° - 45°) + 4)

… = √(20 + 16 cos(90°))

… = √20 = 2√5

Answer: 2√5

Step-by-step explanation:

Use the Sine Law of triangles: In triangle with sides of length 1,2,3 that are opposite to angles 1,2,3 we have

1/sin1=2/sin2=3/sin3.

Dylan opens a credit card account with $550.00 of available credit .Now that he has made some purchases Dylan’s account only has 445.00 of available credit.What is the percentage decrease of the amount of available credit in Dylan’s account
A.23%
B.81%
C.19%
D.14%

Answers

Answer:

I'm pretty sure it's C

Step-by-step explanation:

the calculations I did, C was the closest

Justin is building a ramp in the shape of a right triangle to practice skateboarding. The ramp has a height of 3 feet and diagonal of 7 feet. Which value best represents the length of the ramp.

Answers

Answer:

10ft

Step-by-step explanation:

Answer:

6.324

Step-by-step explanation:

a2+b2=c2

32+b2=72

9+b2=49

   -9=  -9

[tex]\sqrt{40}[/tex]=6.324

One lap around a standard high-school running track is exactly 0.25 miles. Write the function miles_to_laps() that takes a number of miles as an argum

Answers

Answer:

Step-by-step explanation:

The following code is written in Python. It is a function that takes in the number of miles as an argument and returns the number of laps that those miles represents.

def miles_to_laps(miles):

   laps = miles / 0.25

   return laps

Describe a ratio relationship based on your spinning in which is 1:4?

Answers

Answer:

Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

For example, "The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak."

"For every vote candidate A received, candidate C received nearly three votes."

The price paid for a $15 shirt after a 45% discount is applied​

Answers

Answer:

ur mom

Step-by-step explanation:

Answer:

$6.75

Step-by-step explanation:

15 times 0.45=6.75

Algebraic Expression Evaluate the expression 9x + 2 when × = 3

HELP ME​

Answers

Answer:

The value of 9x+2 when x=3 is 29

Step-by-step explanation:

Algebraic Expressions

We are given the expression

9x + 2

And it's required to evaluate the expression when the value of x is 3.

It can be done by substituting x by 3:

9*3 + 2

=27 + 2

=29

The value of 9x+2 when x=3 is 29

Choose the correcr definition of (n k) from below

Answers

Please send a picture (:

how can 1\5 be rewritten?

Answers

Answer: It can be written as a decimal which is 0.2 .

Step-by-step explanation: Divide 1 by 5 which you get 0.2 .

Hope it helps

Answer:

2/10, 3/15, and 4/20 as well as 0.2

Step-by-step explanation:

Which equations are related equations to 14 + x = 26?
Select each correct answer.
O14- x= 26
Ox=26 - 14
0 14= 26 - x
0 26 + 14 = x

Answers

Answer: x=26-14

Step-by-step explanation :you need to subtract on both sides so that why it is x=26-14.

2
x 6 =
5
What is ttsgsfsyysyyzhzjkanabzhhzhxvgxgxgvxbxbxvxvvxvxvxvxushd

Answers

Answer:

what's that? lol

Step-by-step explanation:

should I make the question? lol

2×6×5= 60

great day :)

3) plllllllllllsss help

Answers

Answer:

C

Step-by-step explanation:

Because they both are the same

please help with question ​

Answers

Answer:

18.84

Step-by-step explanation:

Area= 135/360(pi*4^2)

Area=0.375(50.24)

Area=18.84

Pensacola, Florida , gets an average of 64.28inches of precipitation per year. Key West , Florida, gets an average of 38.94 inches per year. About how many more inches of precipitation does Pensacola get than key west ?

Answers

Answer: 25.34 inches of precipitation

Step-by-step explanation: you have to subtract the precipitation from pensacola by the precipitation from Key West. so when you subtract the 2 you get 25.34 inches

I know the answer but what is the key I am asking u

Help please I need help .Solve 0.1x=3 for x
A. 3.100 B. 300.000 c. 2.900 D. 30.000 E. 3.000

Answers

it’s D because you divide both sides by 0.1 and get 30

Hannah has a small circular table. The radius of the tabletop is 23 centimeters (



What is the area of the tabletop, rounded to the nearest square centimeter? Use 3.14 for π.

Answers

Answer:

C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Help please I will give you ten points because I don't have much

Answers

Answer: I think it's 8 but its really blurry and I cant see

Step-by-step explanation:

Please help this is very hard for me

Answers

Answer:

Step-by-step explanation:

I really don't know sorry I thought I knew it

Audrey and Megan are decorating for a birthday party. Audrey hangs 4 streamers in the same amount of time that Megan hangs 6. If Audrey hangs 12 streamers, how many will Megan hang?

Can you do it in tape diagram form or send me a link to the interactive?

Answers

The answers is 8 because Audrey is putting up 4 for every 6 streamers Megan is hanging so there for it’s 8

85 percent of what is 64.6?

Answers

Answer:

54.91 i think!!

Step-by-step explanation:

In Tokyo, construction workers earn an average of ×420,000 (yen) per month with a standard deviation of ×20,000, while in Hamburg, Germany, construction workers earn an average of €3,200 (euros) per month with a standard deviation of €57. A worker making ×460,000 per month in Tokyo is earning relatively the same as one earning €3,300 per month in Hamburg?

Answers

Answer:

Since they have different z-scores, they are not earning relatively the same.

Step-by-step explanation:

We use z-scores to solve this question.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this question:

They will be earning relatively the same if they have the same z-score.

Tokyo:

Earns 460, mean 420, standard deviation 20. So [tex]X = 460, \mu = 420, \sigma = 20[/tex]. The z-score is:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{460 - 420}{20}[/tex]

[tex]Z = 2[/tex]

Hamburg:

Earns 3300, mean 3200, standard deviation 57. So [tex]\mu = 3300, \sigma = 3200, \sigma = 57[/tex].

The z-score is:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{3300 - 3200}{57}[/tex]

[tex]Z = 1.75[/tex]

Since they have different z-scores, they are not earning relatively the same.

Initially, 40% of the students at the school dance are freshmen. Then, 15 more freshmen arrive, after which 52% of the students at the dance are freshmen. How many students are now at the dance after the additional freshmen arrive?

Answers

Answer:

75

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

Which parts must be congruent to prove APQR = APSR by SAS?

Answers

Answer:

<A must be congruent to <A, <P must be congruent to <P, <Q must be congruent to <S, and <R must be congruent to <R

Step-by-step explanation:

y is directly proportional to x^ . if y=12 when x=2 find, y when x=5

Answers

Answer:

The value of y  = 30 when x = 5

Step-by-step explanation:

We know that when 'y' varies directly proportional to 'x', we get the equation

y ∝ x

y = kx

k = y/x

where k is called the 'constant of direct variation'.

We are given

y = 12 when x = 2

so substituting y = 12 and x = 2 in the equation

k = y/x

k = 12/2

k = 6

Thus, the value of k = 6

We have to determine the value of y when x = 5

so substitute x = 5 and k = 6 in the equation

y = kx

y = 6(5)

y = 30

Therefore, the value of y  = 30 when x = 5

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