Simplify: (4x2 + 21xy – 7y2) + (10x2 + 11y2 – 20).
HELP PLEASEEE

Answers

Answer 1
Ok so the answer is 8 + 21xy + 8y

Explanation:
U multiply and calculate then remove the opposites rewrite and calculate then remove the parentheses then u proceed to collect like terms

Hope this helps !!

Happy Christmas <33

Related Questions

f(x)=Tan^-1 (1)

PLEASE ANSWER! WILL GIVE BRAINLIEST

Answers

Answer:

−π

----

4

Step-by-step explanation:

Alright, archtan /

tan

1

(

x

)

is the inverse of tangent. Tan is

sin

cos

. Like the inverse of sin, the inverse of tan is also restricted to quadrants 1 and 4.

Knowing this we are solving for the inverse of tan -1. We are basically being asked the question what angle/radian does tan(-1) equal. Using the unit circle we can see that tan(1)= pi/4.

Since the "Odds and Evens Identity" states that tan(-x) = -tan(x). Tan(-1)= -pi/4.

Knowing that tan is negative in quadrants 2 and 4. the answer is in either of those two quadrants. BUT!!! since inverse of tan is restricted to quadrants 1 and 4 we are left with the only answer -pi/4.

the side length of the state flag of Colorado are in the ratio of 2:3 if the flag is 12 ft long what is the height?​

Answers

Answer:

The height is 8

Step-by-step explanation:

Ratios are just fractions. That being said, you also have part of a fraction. You know that the colorado flag is in 2:3, and 12 feet long is according to that ratio; it equals each other.

Make the equation.

[tex]\frac{2}{3} = \frac{x}{12}[/tex]

Now isolate x (in order to solve for it)

[tex]12 * \frac{2}{3} = \frac{x}{12}*12\\8 = x[/tex]

x= 8

The height is 8.

8/12 = 2/3 ✅

Which of the following is not a solution to the inequality
4x + 1 ≤ 18
A. 4
B. 4.23
C. 4.25
D. 4.27

Answers

Answer: A   4

step by step explmationn

Answer:

C. 4.25

Step-by-step explanation:

You would want to subtract the one so you could subtract it to 18 then divide 4 by 17 to get 4.25

(4x^2-2x-3)+(-3x^2+x+7) i know the answer i just need to show the work

Answers

Answer:

x² - x + 4

General Formulas and Concepts:

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define

(4x² - 2x - 3) + (-3x² + x + 7)

Step 2: Simplify

Combine like terms (x²):                    x² - 2x - 3 + x + 7Combine like terms (x):                      x² - x - 3 + 7Combine like terms (Z):                     x² - x + 4

7. The ratio of width to length of the United States flag is 10:19.
If the width of the flag at Emersen's school is 4 feet, what is its length in feet?

Answers

2 2/19 feet because 19x=4
X=4/19
10x=10x4/9
40/19

Puzzle 3 - Perfect Squares
Directions: Using the digits 1 - 9 at most one time each, fill in the boxes to make each expression evaluate as a perfect square number. Example: 16 4 * 4 also equals 8 * 2.


Please help

Answers

1st box: 4
2nd box: 7 and 2
3rd box: 4
4th box: 3 and 9
5th: 3
Hope this helps!

Winter Wonderland buys items at wholesale, then marks them up to set a retail price. They buy snow globes for $9.20 and mark them up by 95%. What is the retail price or selling price of the snow globes?

Answers

Answer:

$17.94

Step-by-step explanation:

Step one:

given

the cost price of snow globes = $9.20

mark up percent= 95%

Required:

the retail selling price

Step two:

let us find 95% of $9.20

=95/100*9.20

=0.95*9.20

=$8.74

Hence the retail selling price is = 9.20+8.74

=$17.94

The distance between a negative number and a positive number is 14 1/2. What are the numbers?

Answers

Answer: Hope this helps!

Step-by-step explanation:

the negative number is -1

the positive number is 13.5

How long will it take to get $250 in interest if $2500 in invested at a 7% interest rate?

Answers

Answer:

If it is an annual percentage rate: 8.4 months

Step-by-step explanation:

2500 x .07 = 175

175 / 250 = .7 / 12months = 8.4 months

Jeremy opened a bank account depositing $1,950 initially. He withdraws a fixed amount every month. At the end of the first month, account balance is $1,800. Which equation could model the situation?

Answers

Answer:

1800 = 1950 - m

Step-by-step explanation:

Lets call the fixed amount he withdraws every month m. He starts with $1950 and withdraws a certain amount, m, every month. At the end of the first month, he has withdrawn 1m amount of money and ends up with $1800. Therefore, 1950 - 1m =  1800. We can get rid of the 1 and get 1950 - m =  1800, or 1800 = 1950 - m. If the answer choices do not have "m" as a variable, you can substitute "m" for any variable.

a(7x+3)=14x+b
What are the values of A and B?

Answers

Answer:

24

Step-by-step explanation:

I think there the same for each but I hope I helped

Convert this words into actual number
A. seventy and one thousand, four hundred three ten-millionths
B. seventy-two and one thousand, six hundred forty-two-hundred-thousandths

Answers

Answer:

i think it's a= 70.0000001403 b=72.00001642

Step-by-step explanation:

hope this helps! please mark as brainliest!

what are the multipils of 17​

Answers

Answer:

17, 34, 51, 68, 85, 102, 119, 136, 153, 170

hope this helps

Answer:

The multiples of 17 are: 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 272, 289, 306, 323, 340, 357, 374, 391, 408, 425, 442, 459, 476, 493, 510, 527, 544, 561, 578, 595, 612, 629, 646, 663, 680, 697, 714, 731, 748, 765, 782, 799, 816, 833, 850, 867, 884, 901, 918, 935, 952, 969, 986.

Step-by-step explanation:

Easiest way to solve this is to probably grab a piece of paper and just add 17 until you find whatever you’re looking for!

If there's a rigid motion that maps ΔJLK
Δ
JLK
onto ΔABC
Δ
ABC
then the two triangles are congruent. Are the triangles congruent? If so, by which rigid motion is ΔJLK
Δ
JLK
mapped onto ΔABC
Δ
ABC
?



Question 5 options:

Yes, the triangles are congruent becauseΔJLK
Δ
JLK
is mapped ontoΔABC
Δ
ABC
through a translation.


No, the triangles are not congruent because ΔJLK
JLK
is mapped onto ΔABC
ABC
through a reflection.


Yes, the triangles are congruent because ΔJLK
Δ
JLK
is mapped onto ΔABC
Δ
ABC
through a rotation.


Yes, the triangles are congruent becauseΔJLK
Δ
JLK
is mapped onto ΔABC
Δ
ABC
through a reflection.

Answers

Answer:

The answer is A.

Step-by-step explanation:

JLK is translated to the left by 2 units

A souvenir shop sells two sizes of American flags. Small flags cost $3.50 and large flags cost $6.50. On a recent day, 155 flags were sold and $683.50 was collected. How many flags of each size were sold that day?

Answers

Answer:

Small flags = 108

large flags= 47

Step-by-step explanation:

Step one:

given

let the number of small lag be x

and big flags be y

so

3.5x+6.5y= 683.5----------1

x+y=155------------------------2

Step two:

from eqn 2 x= 155-y

put x= 155-y in  eqn 1

3.5(155-y)+6.5y= 683.5

542.5-3.5y+6.5y=683.5

collect like terms

3y=141

divide by 3

y= 141/3

y=47

Step three:

put y= 47 in eqn 2

x+47=155

x= 155-47

x=108

PLEASE HELP!! Urgent!!

Answers

Answer:

Step-by-step explanation:

What is the value of​ n?
4.8×108=3×1051.6×10n

Answers

Answer:

n = 0.0164321

Answer:

1051.6×10n

Step-by-step explanation:

10. Four bagels and eight muffins cost $16. Six bagels
and five muffins cost $13.50 How much does a bagel
cost? How much does a muffin cost?

Answers

bagel=$1
muffin=$1.50

Which values complete the table?
-3. ?
1. ?
0. ?
4. ?
- 3. ?
(Table)

a. 6, -2, -3, 13
b. -12, -2, -3, 13
C.-9, -1, -3,5
d. -4,0,-1,3

Answers

Answer:

C.-9, -1, -3,5

Step-by-step explanation:

Given

y = 2x - 3 ---- [missing equation]

Required

Complete the table

To do this, we simply substitute the values of x in the given equation.

When x = -3

y = 2 * -3 - 3

y = -6 - 3

y = -9

When x = 1

y = 2 * 1 - 3

y = 2 - 3

y = -1

When x = 0

y = 2 * 0 - 3

y = 0 - 3

y = -3

When x = 4

x = 2 * 4 - 3

y = 8 - 3

y = 5

Hence, the missing gap can be filled with: C.-9, -1, -3,5

helppppppppppppp meeeeeeeeeeeeeeeeee plzzzzzzzzzzzzzzzzzz wrong or right?

Answers

Answer:

Yes you are right.

Step-by-step explanation:

Once you divide 128.25 by 3 you will get 42.75

Then you multiply 42.75 by 5 and you will get 213.75.

what did Tyler do wrong pls help me

Answers

Answer:

he did nothing wrong

Step-by-step explanation:

I need help ASAP
Does this show a function please explain

Answers

Answer:

where is the dot, I Bileve it is no.

what is the simplified form of the expression
[tex] \sqrt{ - 64} [/tex]

Answers

I believe the answer will be 8i
It might be -8 I tried it on a calculator and it said that 64 was 8 but a negative should be the same so it’s either 8 or -8

The square root of a number and 8 is 17. What is the number?

Answers

Answer is 81

17-8= 9

9 squared is 81

Equation is sqrt81 + 8 = 17

i really need help pls i’ll give brainlest

Answers

Answer:

Point Y

Step-by-step explanation:

Answer:

Point Y

Step-by-step explanation:

6.78232998....

HELP WILL MARK BRAINLIST!!!!!!!!!!! DUE TODAY 10:52 Write 1/8% as a decimal number. Enter your answer in the box.

Answers

Answer:

12.5

Step-by-step explanation:

Answer:

.125

Step-by-step explanation:

divide 1 by 8

or  divide 1 by 4 then divide by 2

Pls lmk the answer it’s a final

Answers

Answer:

The slop is 1 and the y intecept is 2

Step-by-step explanation:

Answer:

Slope=3

Y intercept=2

I hope this helps you! Do you need any more help with your final?

Can anyone help me ?

Answers

Which TWO expressions are equivalent to (x - y) 2/3 - 3/4 (y-x)

NEED HELP TO FIND x ASAP!!!!!!!!!

Answers

The answer is 31

Explanation:
A triangle has a total of 180 degrees, because there the line that proceeds the angle of the triangle is 123 degrees you can find the value of x

180-123= 57
57+92= 149
180-149=31
i believe the answer is 31

Help questions 1, 3, 4 and 8 please? It’s due In 30 mins

Answers

Answer:

For number one I forget what it is called but I know that its not right because the left side can't be connected to 2 numbers on the right side. For number 3 I honestly have no idea I have never seen or done that equation in my life. For number 4 all you have to do is count up then how many left or right that goes to the line crossing a place where a point could be. For example you rise 3 and go over two it would be 3/2. Though that isn't the answer I hope this helps. Also I don't know number 8 either I am sorry but I also hope this helped a little bit.

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