Expand & simplify
(9x - y) (9x + y)​

Answers

Answer 1

Answer:

[tex]81x^{2}- y^{2}[/tex] this is the answer

Step-by-step explanation:


Related Questions

The angles of a triangle are described as follows: Angle A is the largest angle; it's measure is twice the measure of Angle B. The measure of Angle C is 10 more than one-third of Angle B. Find the measures of angle B?

Answers

Answer:

[tex]\bold{\angle B = 51^\circ}[/tex]

Step-by-step explanation:

Given a [tex]\triangle ABC[/tex] such that [tex]\angle A[/tex] is the largest.

[tex]\angle A[/tex] is equal twice of [tex]\angle B[/tex]

[tex]\angle C[/tex] is 10 more than one third of [tex]\angle B[/tex]

To find:

Measurement of [tex]\angle B[/tex].

Solution:

Let [tex]\angle B =x^\circ[/tex]

As per question statement:

[tex]\angle A = 2\times \angle B=2x^\circ[/tex]

[tex]\angle C = \dfrac{1}{3}\angle B +10= \dfrac{1}{3}x +10 ^\circ[/tex]

Using the angle sum property of a triangle i.e. sum of all the three internal angles is equal to [tex]180^\circ[/tex].

[tex]2x+x+\dfrac{1}{3}x+10 = 180\\\Rightarrow \dfrac{10}{3}x =170\\\Rightarrow x = 51^\circ[/tex]

Therefore, the answer is:

[tex]\bold{\angle B = 51^\circ}[/tex]

I need help please help me and I need the work.

Answers

Answer:

question 1 asks about the volume  and question 2 asks about the surface area.. I can't see all of question 3... soo I'll give  you the first two only

Step-by-step explanation:

this seems like it would be easier to figure out.. if we did the volume of the block that would fit around the odd shape of the foam soooo

the block would be 10 inches tall by 36 inches long by 20 inches in depth

use a calculator.. 10 x 36  x 20 = 7200 [tex]inches^{3}[/tex] is  the volume... of just a block that would fit perfectly over that foam structure.. now subtract the two pieces that are not part of the block.. the long rectangle and the triangle off the end.

the first one to subtract is a block that is 8  x 5 x 20= 800

the second piece to subtract is the triagle block that is 18 x 8  so the formula for the area of a triangle is 1/2 base * height = 1/2 (18*8)= 72

7200-800-72=[tex]inches^{3}[/tex]  is the total volume of the shape

the surface area is just add up each flat area of the shape

side = 36x10 - 8x5 - 1/2(8x20)

side = 240

5x20 + 8x20 + 5x20 + 10x20 + 20x20 + 2x20 +36x20 + 2(side)= 2200 [tex]inches^{2}[/tex]

Need help on this ASAP !!!!!!!!!!!! Answer correctly. Will mark Brianliest !!!!!!!!!!!!!!!

Answers

Answer:

You have to use ur ruler so u can see what the longest side is, So basically use the ruler and look up the centimetre mark and then it shows you what number is at and whatever the biggest number is is what the longest side is.

Create an algebraic equation for the word problem below:

Canadian Tire is selling coffee mugs. A coffee mug costs $5 and each day the price increases by $2.

Answers

Answer:

5+d2

Step-by-step explanation:

We'll make d=day

5+d2

5 is the base price

and 2 is the number that increases by day

Please tell me if it's incorrect

Happy Holidays!

Select the correct answer.
Which statement is true about the graphed cubic function?

Answers

Step-by-step explanation:

The cubic function passes the x-axis only once,

so there is 1 distinct real zeroes and 2 complex zeroes.

The function has only one real zero and two complex zeroes. Then the correct option is D.

What is a function?

A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.

The graph of the cubic function is shown.

The intersection of the curve with the x-axis is known as the zeroes of the function.

From the graph, the curve that cut the x-axis is only one point. Then the function has only one real zero and two complex zeroes.

Thus, the correct option is D.

More about the function link is given below.

https://brainly.com/question/5245372

#SPJ5

220 cm
110 cm
34 cm
22 cm
What is the area of this trapezoid?
square centimeters

Answers

Answer:

dunno

Step-by-step explanation:

Which of the following is equivalent to 19 L? 1,900 mL 0.019 mL 19,000 mL 0.0019 mL

Answers

Answer:

19,000 mL

Step-by-step explanation:

what is 78 million in scientific notation?

Answers

78000000 in scientific notation is
7.8 x 10 ^ 7
7.8 x . or 7.8x10 1 squared

how do you know this pile of laundry is a mmixture
plz help

Answers

Answer:

The clothing items in it like pant shirts etc. or if it's just a load of shirts.

Step-by-step explanation:

In the diagram below, line j and k are parallel. What is the value of x?

Answers

Answer:

41 degrees

Step-by-step explanation:

Alternate Interior Angles

A new Toyota costs $24,700. The sales taxes is an additional 7.5%. What is the total cost of the car with tax?

Answers

Answer:

$26,552.50

Step-by-step explanation:

Which ordered pair is a solution to the system of equations?

Answers

(2x - y = -2)2
5x - 2y = -7
4x - 2y = -4
Subtract both
x = -3
5(-3) - 2y = -7
-15 - 2y = -7
-2y = 8, y = -4
Solution: (-3,-4)

Answer:

(-3,-4)

Step-by-step explanation:

There are 430 people in a wave pool. Write an inequality that represents how many more people p can enter the pool.

Answers

1x=430 people .........

What is the volume, in cubic in, of a cylinder with a height of 15in and a base radius of 5in, to the nearest tenths place?​

Answers

Step-by-step explanation:

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The volume, in cubic in, of a cylinder with a height of 15 in and a base radius of 5 in is 1177.5 cu.in.

What is a Cylinder ?

A fixed planar closed curve intersects a surface traced by a straight line traveling parallel to a fixed straight line , is called as a Cylinder.

It is given that the height of the cylinder = 15 inch

Base radius = 5 inch.

The volume of the cylinder is given by

V = π r²h

V = π 5² * 15

V = 3.14 *25 *15

V = 1177.5 cu.in

The volume, in cubic in, of a cylinder with a height of 15 in and a base radius of 5 in is 1177.5 cu.in.

To know more about Cylinder

https://brainly.com/question/16134180

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How to find how long it will take a rocket to reach a maximum height

Answers

Answer:

the rocket will reach its maximum height after 4 seconds.  

Step-by-step explanation:

The first term ( -4.9(t-4)^2 ) can never be positive, so the maximum height of 80 meters is achieved when t = 4.  

In a certain​ chemical, the ratio of zinc to copper is 3 to 11. A jar of the chemical contains 385 grams of copper. How many grams of zinc does it​ contain?

Answers

Answer:

35 grams

Step-by-step explanation:

The ratio of zinc to copper is 3 to 11

A jar of chemical contains 385 grams if copper

Therefore the number of grams of zinc it contains can be calculated as follows

3/11= x/385

11x= 385

x= 385/11

= 35 grams

Hence the chemical contains 35 grams of zinc

3x-2 when x=3 what is the answer

Answers

Answer:

for me I think it's

Step-by-step explanation:

the answer is 7

Answer:
7

Explanation:
3 x 3 = 9
9 - 2 = 7

Please help on timerr

Answers

the answer would be -6

Explain how to and find the area of one triangular face

Answers

Answer:

Well its the same formula for the area of a triangle, nothing changes.

a=B*H/2

Step-by-step explanation:

Even if the shape changes, in order to find the area of one side of a triangle, locate the base and height and multiply those two together. After that, use that product and divide it by 2 to find the area of that triangle.

What’s the angles measure for QPM??

Answers

Answer:

∠ QPM = 68°

Step-by-step explanation:

The measure of the chord- chord angle QPM is half the sum of the arcs intercepted by the angle and its vertical angle, that is

∠ QPM = [tex]\frac{1}{2}[/tex] ( LM + LK )

            = [tex]\frac{1}{2}[/tex] ( 76 + 60)°

           = [tex]\frac{1}{2}[/tex] × 136°

           = 68°

7,298341 rounded to the nearest 10,000

Answers

Answer:

7,300,000

Step-by-step explanation:

The answer you're looking for would be 7,300,000.

Andre is trying to solve the equation 2x plus 6 equals 3x minus 8. The result of Andre’s first step was -x + 6 = -8. What was Andre’s first step?

Answers

Answer:

C. Subtracted 3x from each side.

Step-by-step explanation:

I'm not 100% sure that this is correct but it's the only one that makes sense in my brain. But I'm going to explain anyways.

2x + 6 = 3x - 8 (initial equation)

subtract 3x from 2x and it leaves you with -xsubtract 3x from 3x and it leaves you with 0 which is why there is no number there anymore.

It could also be D. Subtract 6 from each side, which is why I'm confused. Hopefully this helps, sorry if it doesn't. But happy holidays! :))

Lin drove her car at a constant speed 164 miles in 4 hours. Manuel rode his motorcycle 140 miles in 3.5 hours. Who rode faster? By how much?

Answers

Answer: Manuel Because He was on the motor bike less. She was in the car driving for 4 HOURS he was on the bike less for a grand total of 3.5 HOURS so MANUEL was faster. :)

And he was faster by 30 minutes...

This is one of those questions where they try to put you focus on something else like speed speed does not matter!! :)

Sophia scored 92% in a math test. If the test had 50 questions, how many did she get right? *

Answers

Answer:

46 questions correct

Step-by-step explanation:

100% = 50 questions2% = 1 question92% = 46 questions

Calvin took his friends to a movie for his birthday. The movie tickets cost $12 per person. He spent less than $180.
If x is the number of friends he took along, then the inequality that represents the situation is
.

Calvin took at most
friends to the movie.

Answers

Answer:

Answer: Your answer would have to be 12x<180

He took 14 friends.

Step-by-step explanation:

hope this helps and have a great rest of your day!

can u help me to solve this​

Answers

Answer:

3b(2a+1)(2a-1)

Step-by-step explanation:

12a²b-3b

3b(4a²-1)

3b{(2a)²-1²)}

3b(2a+1)(2a-1)

how are bar graphs and picture graphs useful ways to display data???????????????????????????

Answers

Answer:

Bar Graph is useful because its easy to see, and if you look at it after 2 years, you could of know about it in a few seconds. Its usually correct to use bar graphs. Like you'll see bar graph's more often than picture graphs.

Picture graphs is useful because displaying data would be easier. Memorizing it would be better and possible.

I don't really have much to say about picture graphs, so its reasonable to give the other person brainliest.

a store offers a 15% discount on all shoes. If a pair of shoes has an original price of $21.25, which of the following is closest to the price after the discount is taken?
Answer Choices:
A) $17.50
B)$18.00
C)18.50
D)19.00
E)19.4=5O
PLEASE ANSWER QUICKLY!!

Answers

The answer is B) $18.00. (21.25)(.85) = $18.0625, and the closest is $18.00

I’ll mark as BRANLIEST!!!

Plz help me!!! 45 POINTS!!

Answers

f(-2)= -12

Explanation: 2(-2) = -4
-4 - 8 = -12

Mr. Harris is adding tiles to his patio area. On Monday, he tiled
of his patio, and on Tuesday, he tiled
of the patio area. How
much would he have left to tile on Wednesday?

Answers

Answer:

The Answer is D

Step-by-step explanation:

there u go

Answer:a

Step-by-step explanation:

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