NEED HELP PLS I WILL GIVE BRAINLIEST

NEED HELP PLS I WILL GIVE BRAINLIEST

Answers

Answer 1

A^2 -b^2 / a +b

Apply the difference of two squares formula to the top :

A^2 - b^2 = (a+b)(a-b)


now you have :

(A+b)(a-b) / a+b = 12


the two (a+ b)’s cancel each other out so you are left with a-b = 12


answer: a-b = 12


Related Questions

17) Mr. Kim's age
in years is 6 more the 3 times the age of his daughter. Which expression represents Mr. Kim’s age?

Answers

Answer:

K = 3D + 6

Step-by-step explanation:

Let Mr Kim's age be denoted by K and his daughter by D.

It states that :

Mr. Kim's age is 6 more (+ 6) than 3 times (× 3) the age of his daughter

Then the expression will be :

K = 3D + 6

Hello I need help with this math question

Answers

Answer:

c obtuse angle

Step-by-step explanation:

Answer: C, Obtuse Angle

Step-by-step explanation: A right angle is an angle with 90 degrees, which this is not.

An acute angle is an angle with LESS than 90 degrees, which is also incorrect.

An obtuse angle is an angle with MORE than 90 degrees, which is correct because the angle is more than 90 degrees.

A straight angle is just a straight line, which this angle is not.

Mrs. culland is finding the center of a circle whose equation is x2 y2 6x 4y – 3 = 0 by completing the square. her work is shown. x2 y2 6x 4y – 3 = 0 x2 6x y2 4y – 3 = 0 (x2 6x) (y2 4y) = 3 (x2 6x 9) (y2 4y 4) = 3 9 4 which completes the work correctly? (x – 3)2 (y – 2)2 = 42, so the center is (3, 2). (x 3)2 (y 2)2 = 42, so the center is (3, 2). (x – 3)2 (y – 2)2 = 42, so the center is (–3, –2). (x 3)2 (y 2)2 = 42, so the center is (–3, –2).

Answers

By completing squares, we will see that the center of the given circle is at (-3, -2).

How to find the center of the circle?

The general circle equation centered on (a, b) of radius R is:

[tex](x - a)^2 + (y - b)^2 = R^2[/tex]

In this case, our equation is:

[tex]x^2 + y^2 + 6x + 4y - 3 = 0[/tex]

First, we need to complete squares, we will have:

[tex]x^2 + 2*3*x + y^2 + 2*2*y - 3 = 0\\\\x^2 + 2*3*x + (9 - 9) + y^2 + 2*2*y + (4 - 4) - 3 = 0\\\\(x^2 + 2*3*x + 9) - 9 + (y^2 + 2*2*y + 4) - 4 - 3 = 0\\\\(x + 3)^2 + (y + 2)^2 = 3 + 9 + 4 = 16[/tex]

Then, by looking at the left side, we can see that the center of the circle is (-3, -2).

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Answer:

d

Step-by-step explanation:

got it right on edge

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An electronics store is offering a discount of 10% on all items. Rebecca wants to purchase a television priced at $460. The store will deduct the discount and then add sales tax of 6% to the discounted price. How much will Rebecca pay for the television? Write your answer in dollars and cents.

Answers

Answer: $438.84

Explanation: 460/100=4.6.
4.6*10=46.
46 is ten percent of 460, so we must subtract 46 from 460 to get 414.
414/100=4.14
4.14*6=24.84
24.84+414=
438.84

Solve the following equation by completing the square.
x(x-5)=14

Answers

Answer:

[tex]x_1=-2,\: x_2=7[/tex]

Step-by-step explanation:

[tex]x(x-5)=14\\\\x^2-5x=14\\\\x^2-5x+(\frac{-5}{2})^2 =14+(\frac{-5}{2})^2\\\\x^2-5x+\frac{25}{4}=14+\frac{25}{4}\\\\x^2-5x+\frac{25}{4}=\frac{81}{4}\\ \\(x-\frac{5}{2})^2=\frac{81}{4}\\ \\x-\frac{5}{2}=\pm\frac{9}{2}\\ \\x=\frac{5}{2}\pm\frac{9}{2}\\ \\x_1=-2,\: x_2=7[/tex]

If wandas motherly take-home is $3,000 her fixed monthly expenses are $2,575 and get average monthly variable expenses are $855 what is her financial situation?

Answers

send a picture of the assignment thank u #1

The following box plot shows the number of books sold each day at a bookstore for 40 days. How many days did the bookstore sell 2 to 12 books?
2
4
10
20

Answers

Answer:

20!

Step-by-step explanation:

Did the test and got it correct!

Three trains are made of identical train cars, so each car has the same number of seats. The first train has 418 seats, the second train has 456 seats, and the third train has 494 seats. How many cars are in each train if no train has more than 25 seats?

In my system the answer format is like this: There were __ cars in the first train, __ cars in the second train and __ cars in the third train

Answers

There were _22_ cars in the first train, _24_ cars in the second train, and _26_ cars in the third train

How many cars are on each train?

We know that the trains have 418, 456, and 494 seats. And are made of the same train cars, so the number of seats on each train car is a common factor of 418, 456 and 494.

We also know that no train car has more than 25 seats.

First, let's decompose the given numbers as a product of prime numbers:

418 = 2*11*19

456 = 2*2*2*3*19

494 = 2*13*19

As you can see, the factors 2 and 19 appear in the 3 numbers, 19 is the largest one that is also smaller than 25, so we conclude that each train car has 19 seats.

Then:

The first train, which has 418 seats, has:

418/19 = 22 train cars.

The second train has 456 seats, so it has:

456/19 = 24 train cars

The third train has 494 seats, so it has:

494/19 = 26 train cars.

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Does anybody know this?Find the measure of the following arcs.

Answers

Answer:

see explanation

Step-by-step explanation:

an arc of a circle is equal to the central angle subtended by the arc

central angle of arc ED = 50° ( vertically opposite angles )

then

arc ED = 50°

the central angle of arc BC = 180° - 40° - 50° = 180° - 90° = 90°

then

arc BC = 90°

the central angle subtended by arc AE = 180° - 50° = 130°

then arc AE = 130°

arc BED = arc BA + arc AE + arc ED = 50° + 130° + 50° = 230°

please help me figure out this question

Answers

Answer:

scale factor = 2.5

Step-by-step explanation:

the scale factor is the ratio of corresponding sides, polygon P to N

scale factor = [tex]\frac{20}{8}[/tex] = 2.5

Sam wants to surround his garden with fencing. He is using a drawing with a scale factor of 4 feet for every 1 inch.
2 in
4 in
Select the exact amount of fencing, in feet, Sam will need to surround the garden.
10 feet
© 16 feet
© 24 feet
48 feet

Answers

24! 2 plus 4 is 6 and 6 times 4 for the scale factor

Answer:

C. 24

Step-by-step explanation:

Can someone help me with this?​

Answers

Answer:

1. AE= 312

2. AC = 161

Step-by-step explanation:

Hey there!

In order to solve the first question, we need to think of possible "C" values

Then after finding the "C" value, we can then find the "A" and "E" values

So:

AC = 24 and CE = 13

What factors do 24 and 13 have in common?

Well, only 1 since 13 is a prime number]

So this means that C has to be 1

Now we know that A is 24 and E is 13

Now we have to multiply them together

24 x 13 is 312

So AE= 312

Now we go on to the second question

We can use the same strategy we used for number one

Instead of finding what C is, we need to find out what E is, since there is E in both of the statements

So:

CE = 7 and AE = 23

What common factors do these two numbers have?

Again, only 1, meaning that E can only be 1

Now we know that C is 7 and A is 23

Since we know this, we can multiply these two numbers together and get our final answer: 161

So AC = 161

The word geometry has eight letters. Three letters are chosen at random. What is the probability that two consonants and one vowel are chosen? 0. 536 0. 268 0. 179 0. 89.

Answers

Answer:

0.179 is the answer yw btw tell me if it's right !!

The fifth-grade classes at Martinez
Elementary School are going to take
a short tethered ride in a hot-air
balloon. The balloon can hold three
students at a time. If there are one
hundred twenty-six students in the
fifth grade, how many rides will have
to be taken in order for every student
to have a turn?

Answers

If the hot air balloon can only hold 3 students and there is a total of 126, there will have to be 42 rides in order for every student to have a turn.

Can you please help me with 12 please?

Answers

The expression for the 12 more than half of the postcard will be written as:- P/2+12=P

What is an expression?

The expression is defined as the relationship between the numbers and variables and is arranged in the form of an equation.

here we have the words in the question to convert it into an expression that is 12 more than half of the postcard.

The expression will be written as:-

P/2+12=P

Hence expression for the 12 more than half of the postcard will be written as:- P/2+12=P

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Write an expression for "the quotient of 9 and
C

Answers

Quotient means we have to divide

Here

Dividend is 9Divisor is C

So

Divide

9÷C

or

9/C

Answer:

[tex]\sf \dfrac{9}{C}[/tex]

Step-by-step explanation:

A quotient is produced by dividing two numbers.

"The quotient of a and b" means "a divided by b".  So the first number "a" is the numerator, and the second number "b" is the denominator of a fraction.

Therefore, "the quotient of 9 and C" is:

[tex]\sf \dfrac{9}{C}[/tex]

Janelle has one dime and several nickels in her coin purse. The table below describes the relationship between the number of nickels, n, and the total value of the coins in her coin
purse in cents, c

If Janelle has 8 nickels in her coin purso, what is the total value of the coins?

52 cents

50 cents

48 cents

46 cents

Answers

Answer:

Graph the solution set for the inequalityy > 2x - 5 by following these steps: Step 1: Identifythe slope and y-intercept. slope = y-intercept = -4. 2.

Step-by-step explanation:

1) The graph of a quadratic f(x) intersects the x-axis at -2 and 10. What is a possible
equation for f(x)?
fx) =

Answers

Answer:

The polynomial f(x) = x^2 - 8x - 20

Find the radius with a volume of 180 cubic feet. Round your answer to the nearest tenth.

I need help! Quick!

Answers

Answer:

3.5 i think

Step-by-step explanation:

r=(3V

4π)⅓=(3·180

4·π)⅓≈3.50263

Which is the simplified form of m^-8p^0

Answers

Answer: Heyaa!! ~

Your Answer is... 1/m^8 which is the b or the second answer!

Step-by-step explanation:

Simplify the expression.

Hopefully this helps you!

-Matthew ^^


Please help!
Find the distance between the points.
(-2.5,3),(5,3)

The distance is ____

Answers

Answer:

7.5 units

Step-by-step explanation:

since the y- coordinates of the points are equal, then the distance between them is the absolute value of the difference in the x- coordinates.

distance = | - 2.5 - 5 | = | - 7.5 | = 7.5

or

distance = | 5 - (- 2.5) | = | 5 + 2.5 | = | 7.5 | = 7.5

Help asap please :)))

Answers

Answer:

it will be figure 3

Step-by-step explanation:

it is the odd one of them, with inner concave

If you throw 3 dice, the probability of getting 3 sixes is 0.5%. The probability of getting no sixes is 57.9%. Find the probability of getting:
A) fewer than 3 sixes
B) at least 1 six

Answers

Answer:

A) 99.5%

B) 42.1%

Step-by-step explanation:

A) Since the probability of 3 sixes is 0.5%, the probability of less than 3 sixes (that is, zero, one, or two sixes) is 100% - 0.5%, or 99.5%

B ) Since the probability of no sixes is 57.9%, the probability of at least 1 six is 100% - 57.9%, or 42.1%

Mr. Crandall ordered three large pizzas
for his fifth graders' Moving Up Day
celebration. If each pizza was divided
into twelfths, how many total slices of
pizza were there?

Answers

Answer:

0.6??

Step-by-step explanation:

Im not exact, im guessing 0.6> This is because

8 pizzas = one box (large box small etc..)

Dived 8 by 12. Get annswer 0.6666666666....

Roudn to nearest hundreth.

New answer = 0.6

Please help.... this is confusing me:0

Answers

Answer:

See below

Step-by-step explanation:

IN a right triangle , remember  S-O-H-C-A-H-T-O-A   <===memorize this!

sin z = O/H = opposite side/hypotenuse = 16/20

cos z = A/H = adjacent / hy[potenuse = 12/20

tan z  = O/A = 16/12

Please help on this question

Answers

The congruent parts of the triangle are:

<A ≅ < Y

< B ≅ <Z

< C≅ <X

AB ≅ YZ

AC ≅ YX

BC ≅ ZX

]ABC ≅ YZX

What are the congruent parts?

The shape in the image are right angle triangles. A right angle triangle is a triangle that has three sides and a right angle. Congruent triangles are triangles that have the same size and the angles.

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help for this question fr​

Answers

Answer:

(x + 16)° = 141°

Step-by-step explanation:

Given figure is of octagon

Sum of interior angles of an octagon is 1080°

-> 5x° + 455° = 1080°

-> 5x° = 1080° - 455°

->5x° = 625°

-> x° = 625°/5

x° = 125°

x = 125

-> (x + 16)° = (125 + 16)°

-> (x + 16)° = 141°

whats is the answer to
5.8/3t +6=3.8t+4.32

Answers

Answer:

t=0.9

Step-by-step explanation:

What is the area of this composite figure ?
21 yd
21 yd
10 yd

Answers

Answer:

area is 630

we can multiply 2 1 by 21= 63 by 10=630

if 2sin theta+1=0 and 90°270° calculate a) 4cos²theta. b) 81tan²theta​

Answers

Answer:

A) [tex]4\cos^2\theta=3[/tex]

B) [tex]81\tan^2\theta=27[/tex]

Step-by-step explanation:

[tex]\displaystyle 2\sin\theta+1=0;\:90^\circ \leq\theta\leq 270^\circ\\\\2\sin\theta=1\\\\\sin\theta=\frac{1}{2}\\ \\\theta=\frac{5\pi}{6}[/tex]

[tex]\displaystyle 4\cos^2\theta=4\cos^2\biggr(\frac{5\pi}{6}\biggr)=4\biggr(-\frac{\sqrt{3}}{2}\biggr)^2=4\biggr(\frac{3}{4}\biggr)=3[/tex]

[tex]\displaystyle 81\tan^2\theta=81\tan^2\biggr(\frac{5\pi}{6}\biggr)=81\biggr(-\frac{\sqrt{3}}{3}\biggr)^2=81\biggr(\frac{3}{9}\biggr)=81\biggr(\frac{1}{3}\biggr)=\frac{81}{3}=27[/tex]

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