If x+y=10 and x-y=4 find the value of x2-y2

Answers

Answer 1

Answer:

40

Step-by-step explanation:

[tex]x^2 - y^2 = (x+y)(x-y) = 10\times 4 = 40[/tex]


Related Questions

3 Factorise 5y - 6py​

Answers

Step-by-step explanation:

5y-6py

y(5-6p)

Answer

hope it helps

Answer:

5y - 6py

y(5-6p)

is the answer

Please help me out solve it and tell me how you got that answer so I can understand please!

Answers

The solution for s in the given equation is [tex]s = C-nD[/tex]

The question seems to be incomplete

Here is the complete question:

Solve for s in this equation [tex]D= \frac{C-s}{n}[/tex]   Depreciation.

To solve for s, that means we should make s the subject of the equation

From the given equation,

[tex]D= \frac{C-s}{n}[/tex]

To solve for s, first multiply both sides by n to clear the fraction

We get

[tex]n\times D= n \times \frac{C-s}{n}[/tex]

Then,

[tex]nD = C - s[/tex]

Now, add s to both sides

[tex]nD + s= C - s+s[/tex]

[tex]nD+s = C[/tex]

Then, subtract nD from both sides

[tex]nD-nD+s = C-nD[/tex]

∴ [tex]s = C-nD[/tex]

Hence, the solution for s in the given equation is [tex]s = C-nD[/tex]

Learn more here: https://brainly.com/question/21406377

what is the slope of a line parallel to 3x+y=7

Answers

Answer:

slope is also same as gradient

if 3x+y=7

make y the subject of formula

y=7-3x

so from,y = mx +c

compare the equations

if -3x=mx

divide both sides by x

I.e m=-3

Find the perimeter of the polygon with vertices Q(-3,2), R(1,2), S(1,-2), and T(-3,-2)

The perimeter is blank units

Plz ASAP!!!

Answers

to find the perimeter of the polygon plot The vertices on a coordinate plane indemnify the segments of the polygon find the distance between the points of the segments. The perimeter of the polygon is 16 units

Answer: The perimeter is 16 units

Step-by-step explanation:

What is the equation of the line graphed below?
5
(2, 1)
O A. y=-2x
B. y -
C. y = 2x
o D. y = 1/2 x

Answers

Answer:

C. Y=2x

Step-by-step explanation:

I hope this help you

Nicholas has $50 to use while he is on a vacation. He decides to spend $5
a day. The amount of money Nicholas has left and the number of days are
related
create a numerical representation for this situation

Answers

Answer:

days(d) = 50 ÷ 5

Explanation:

50 ÷ 5 =  number of days

Solve the compound inequality graph the solution -2 is less than or equal to 2x - 4 is less than 4

Answers

1,4                                

pls give me brainliest thanks and 5 start have nice day I know this is correct.

Answer:

-2 ≤ 2x-4 < 4

Write the equation of the line that passes through the points
(3,-2) and (6, 1).
y=x-5
y = 5x + 1
y = -x + 5

Answers

Answer:

It is y = x - 5

Step-by-step explanation:

General equation of a line:

[tex]{ \bf{y = mx + c}}[/tex]

m is the gradient, and c is y-intercept.

For gradient:

[tex]slope = \frac{y_{2} - y_{1} }{x _{2} - x_{1}} [/tex]

substitute:

[tex]slope = \frac{1 - ( - 2)}{6 - 3} \\ \\ = \frac{3}{3} \\ slope \: = 1[/tex]

m = 1

for y-intercept:

consider point (6, 1):

[tex]y = mx + c \\ 1 = (6 \times 1) + c \\ 1 = 6 + c \\ c = 1 - 6 = - 5[/tex]

therefore:

[tex]{ \sf{equation \: is \: \{y = x - 5 \}}}[/tex]

Write as an expression. The quantity 10 less than x, divided by 4

Answers

Answer:

[tex]\frac{x-10}{4}[/tex]

Step-by-step explanation:

When it says less then that means 10 is less than x. You can write divided by 4 either by putting it as a fraction or by using the division sign as "x-10 / 4."

The quantity 10 less than x, divided by 4 is mathematically given as (10 - x) / 4.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

It simply implies subtracting something from an entity, group, location, etc. Subtracting from a collection or a list of ways is known as subtraction.

Division means the separation of something into different parts, sharing of something among different people, places, etc.

If the quantity 10 is less than x, then the expression will be

⇒ 10 - x

Then the quantity 10 less than x and divided by 4, then the expression will be

⇒ (10 - x) / 4

The quantity 10 less than x, divided by 4 is mathematically given as (10 - x) / 4.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

1. Write each of these products as a quadratic
expression of the form x2+bx+c. That is, write
each product in standard form.
a. (x+3)(x + 5)
b. (x – 4)(x + 7)
C. (x-6)(x - 2)

Answers

Step-by-step explanation:

maybe I am wrong sorry for that but try to understand it

have a great day

I think a is 15x
I think b is -28x
Do you want to try C or do you want me to tell you?
It’s been a while since I’ve done math, so anyone can correct me if I’m wrong

how many times does 48 go into 4,896​

Answers

Answer:

102 times

Step-by-step explanation:

4,896 divided by 48 =102

so 48 goes 102 times into 4,896

hope this helps:)

4800/48 = 100
96/48 = 2
100+2 = 102

Alicia has 8 more dollars than Fred. Altogether, Alicia and Fred have 26. dollars. Let "f" represent the amount of money, in dollars, that Fred has. Use "f" to write an expression that represents the amount of money that Fred has.

Use “f” to write an expression that represents the amount of money that Alicia has.


Write de equation to represent the problem situation


Solve your equitation showing each step of the solution


Based on your solution to your equation, state how much money Fred has

Based on your solution to your equation, state how much money Alicia has

Answers

Answer:

Fred has = 9 $

Alicia has = 9 + 8 =17 $

Step-by-step explanation:

Let, Fred has = f $

Then, Alicia has = f + 8 $ ;[as Alicia has 8 more dollars than fred]

Now, the required expression is

∴[tex]f+(f+8)=26\\=>2f+8=26\\=>2f=18\\f=9[/tex]

So, Fred has = 9 $

Alicia has = 9 + 8 =17 $

Hope you have understood this.....    

ask me if you have any confusion.....    

if you liked it pls mark it as the brainliest

Ella invests 4000 dollars for 3 years a rate of 1.2% per year compound interest. Calculate the value of her investment at the end of the 3 years.​

Answers

Answer:

Answer is $4145.6

Step-by-step explanation:

formular for compound interest:

[tex]{ \bf{A = P( \frac{r}{100} + 1) {}^{n} }}[/tex]

P is the principle, P = $4000

r is rate, r = 1.2%

n is period, n = 3 years

A is the accumulative amount.

substitute:

[tex]{ \sf{A = 4000( \frac{1.2}{100} + 1) {}^{3} }} \\ \\ { \sf{A = 4000 \times 1.0364}} \\ { \sf{A = 4145.6 \: dollars}}[/tex]

please help me will mark braniliest

Answers

Answer:

The correct answer is option A. Line DB

Step-by-step explanation:

When you write that M is a line, the sign for this would be a line with arrows on both of its end like this :  <------------>

Now, due to the fact that lines look like this  <------------>, we can cross out option C and D as they both aren't lines but points. Points go like this: ---->

Option B says, "line EB", this can't be true because E corresponds with the letter F, it can't become a line with B hence why the only option true here is choice A.

graph of −x − 2y = 6

Answers

Answer:

y = 1/2 x - 3

Step-by-step explanation:

Answer:

Step-by-step explanation:

what is the opposite of 7 plus the opposite of 9

Answers

Answer:

-7.11111111111

Step-by-step explanation:

Which numbers in set A = ( -7,-4, 2, 14, 21,34, 42) are elements of b and c, shown below? Set b= ( even numbers) set c: ( multiples of 7) enter answers from largest to smallest.

Answers

Answer:

(14, 42)

Step-by-step explanation:

(-4, 2, 14, 34, 42) are all elements of b, and (-7. 14, 21, 42) are all elements of c. (14, 42) are the only elements that are in both sets

Tom bought $81 worth of milk. The price of a bottle of Brand A milk was $1.50 and of Brand B milk was $2.10. He bought 40 bottles of Brand A milk. How many bottles of Brand B milk did he buy? ​

Answers

he spent $60 on brand a milk so that means he spent $21 on brand b milk so that means bought 10 bottles of brand be milk
He bought 10 brand b milk

what is this pls help me​

Answers

Answer:

D’=(3,3); F’=(-2,-2); E’= (-5,0)

Step-by-step explanation:

To find the reflection over the y axis (the line x=0), you just need to change the x either from positive to negactive or the opposite.

Can someone pls help me with problems 4 and 5 pls this is due in a bit and I’m in a rush I’ll give 100 points it’s all I have

Answers

Answer:

Step-by-step explanation:

Answer:

#4

Let M is the midpoint of DE.

Since D is at 8 and DE = 5.

DM = ME = 5/2 = 2.5

Point M is at:

8 + 2.5 = 10.5          if E is to the right of D8 - 2.5 = 5.5            if E is to the left of D#5

Given

XY = 7, YZ = 2x - 1, XZ = 30

Since XZ = XY + YZ, set up an equation and solve for x:

7 + (2x - 1) = 302x + 6 = 302x = 24x = 12#6

The distance from your house to friend's is LN.

We have:

M is midpoint of LN, so LM = MNLM = 3xMN = 2x + 2

Set up an equation, solve for x:

3x = 2x + 23x - 2x = 2x = 2

Find the distance LM:

LM = 3*2 = 6

Find the distance LN:

LN = 2*LM = 2*6 = 12

Alexandra's family took a road trip to the Grand Canyon. Alexandra slept for the last 48 miles of the trip. If the total length of the trip was 800 miles, what percentage of the total trip had they travelled when Alexandra fell asleep

Answers

Answer:

She fell asleep for 6% of the trip.

Step-by-step explanation:

You take 48 and divide it by 800. That gives you 0.06.

0.06 equals 6%.

Answer:

6%

Step-by-step explanation:

Divide 48 and 800 together.

48/800 = 0.06

48 is the miles she's sleeping and 800 is the total miles.

So, she was asleep only 6% of the trip.

Hope this helped.

HELPPP!!!!!!
How far is weather station A from the storm?
44.6 miles
19.7 miles
42.2 miles
31.2 miles

Answers

Answer: Choice D)  31.2 miles

This value is approximate.

============================================================

Explanation:

Let's focus on the 48 degree angle. This angle combines with angle ABC to form a 90 degree angle. This means angle ABC is 90-48 = 42 degrees. Or in short we can say angle B = 42 when focusing on triangle ABC.

Now let's move to the 17 degree angle. Add on the 90 degree angle and we can see that angle CAB, aka angle A, is 17+90 = 107 degrees.

Based on those two interior angles, angle C must be...

A+B+C = 180

107+42+C = 180

149+C = 180

C = 180-149

C = 31

----------------

To sum things up so far, we have these known properties of triangle ABC

angle A = 107 degreesside c = side AB = 24 milesangle B = 42 degreesangle C = 31 degrees

Let's use the law of sines to find side b, which is opposite angle B. This will find the length of side AC (which is the distance from the storm to station A).

b/sin(B) = c/sin(C)

b/sin(42) = 24/sin(31)

b = sin(42)*24/sin(31)

b = 31.1804803080182 which is approximate

b = 31.2 miles is the distance from the storm to station A

Make sure your calculator is in degree mode.

The weather station A is 31.2 miles from the storm

From the triangle shown:

m<B = 90° - 48°

m<B = 42°

m<A = 17° + 90°

m<A = 107°

m<A + m<B + m<C = 180° (Sum of angles in a triangle)

107° + 42° + m<C = 180°

m<C = 180° - 149°

m<C = 31°

The distance between the weather stations A and B = 24 miles

That is, AB = 24 miles

The storm is at point C

The length AC is found by using the rule of sines:

[tex]\frac{sinC}{AB}=\frac{sinB}{AC} \\\\\frac{sin31}{24}=\frac{sin42}{AC} \\\\\frac{0.515}{24} = \frac{0.669}{AC} \\\\0.02146=\frac{0.669}{AC}\\\\AC=\frac{0.669}{0.02146} \\\\AC=31.2 miles[/tex]

The weather station A is 31.2 miles from the storm

Learn more on sine rule here: https://brainly.com/question/4372174

X
6.
The table shows all the possible sums when rolling two number cubes numbered 1
What is the probability that rolling two cubes results in a sum of 8P
6
1
2
3
4
5
6
7
1
2
3
4
5
6
2 3 4 5
3 4 5 6
4 5 6 7
5 6 7 8
6 7 8 9
7 8 9 10
8 9. 10 11
7
8
9
10
11
12
Done

Answers

Answer:

Step-by-step explanation:

You can roll an 8 in the following ways

3 - 5

5 - 3

4 - 4

6 - 2

2 - 6

That's 5 ways that it can be done. There are a total of 36 ways to throw 2 dice.

The probability of getting an 8 is 5/36

What is the reference angle for 283°?

Answers

What is the angle to get the reference angle

Please help,and i will give you the brainleist.please write in a notebook and send.​

Answers

Answer:

my answer is Rs 57

remember it says remaining copies so u much find the 5% from the price of 900 copies

Help me bro like this is difficult

Answers

The answer is B I think

7. Is 5.787787778... a rational or irrational number?
Explain.

Answers

Answer:

Irrational

Step-by-step explanation:

Its irrational as it has no pattern of numbers after decimal point and the number are infinite

Answer:

irrational because it has a coma after one number

María va de compras a una tienda departamental y adquiere los siguientes productos: 2 pantalones, 4 blusas, 3 pares de calcetas y 2 pares de tenis. El precio de los artículos por unidad es: pantalones $ 600.00, blusas: $350.00, calcetas: $120.00 y tenis: $ 950.00. Si María contaba con $5000.00, calcula cuánto dinero le sobró después de las compras realizadas.

Answers

Answer:

Pantalones = $600.00 × 2

$ 1,200.00

Blusas = $350.00 × 4

$ 1,400.00

Calcetas = $120.00 × 3

$ 360.00

Par de tenis = $950.00 × 2

$ 1,900.00

Total a pagar = $4,850.00

$5,000.00

- $4,860.00

Sobrante = $140.00

Find the output, y, when the input, s, is – 7.
y =
y
1
8+
6+
4+
2+

CC
-8
-6
-4
-2
2
4
6
8
-2-
M
-4-
-6+
-8

Answers

Answer:

school:

cleaned class rooms and background

cooking equipment are laboratory tested of being germs free and also bacteria free

community: clean environment

Step-by-step explanation:

Is 15.7 an integer ,whole number,natural number

Answers

Answer: natural number
Explanation:
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