Expand and simplify the following expressions : 1.(a-5)(a-7)
2.(x-2y)(3x+4)
3.(4x+3y)(4x-3y)
4.(6x-7y)(6x+7y)​

Answers

Answer 1

Answer:

1. (a-5)(a-7)

a2 - 12a + 35

2. (x-2y)(3x+4)

3x2 +4x - 6xy - 8y

3. (4x+3y)(4x-3y)

16x2 - 9y2

4. (6x-7y)(6x+7y)

36x2 - 49y2

(the twos after the letters means squared)

:)


Related Questions

A histogram titled Number of payphones has date on the x-axis and payphones on the y-axis. From 1981 to 1985 there were 160 payphones, 1986 to 1990: 190, 1991 to 1995: 200, 1996 to 2000: 210, 2001 to 2005: 55, 2006 to 2010: 45.
The histogram shows the number of payphones that were active by year in a large city. How many payphones would you expect to be active between 1976 and 1980?

A.) over 200
B.) between 150 and 200
C.) between 50 and 100
D.) fewer than 50

Answers

Answer:

b

Step-by-step explanation:

this is the most likely answer because from '81 to '00 there were between 150-200, so it is also likely in this range

The correct answer is B

need help with this please

Answers

Answer:

13.6

Step-by-step explanation:

Remember SOH CAH TOA

We're going to use tangent = opposite / adjacent because the 11 is opposite theta (39 degrees) and x is adjacent to it.

tan (39) = 11 / x

x = 11 / tan(39)

x = 13.584 -> 13.6 (rounded to nearest tenth)

Note: Make sure your calculator is in degree mode.

Does anyone know how to do simple interest for 7th grade math? I need a tutorial or an example please, thanks. A question example is $750, 7%, 3 years.

Answers

Answer:

750/100 X 7 = 52.50

52.50 X 3 = $157.50

Step-by-step explanation:

divide principal amount by 100 then multiply by interest percentage. this gave 52.50

now multiply the interest amount by number of years

in this case 3

52.50 X 3 = $157.50

EEEEEEEEEEEEEEEE!!!✨

Answers

Answer:

it should be <...........

Answer:

its < some fractions can be bigger than other fractions but whole numbers like 1. 2. 3. and .4 are always bigger t but in this than fractions but in this case the fraction and the right is the biggest so b

Step-by-step explanation:

how do I define the theorem on this question?

Answers

Answer:

AAS

Step-by-step explanation:

have a good day:) .....

Write down the size of angle ABC.
Give a reason for your answer.

Answers

Answer:

Angle ABC = 90°

Step-by-step explanation:

Angle AOC= 180°

so Angle ABC = 0.5 x AOC

or another way to explain is

Rule 1: Angles in semi circle are always 90°

Describe how each graph is obtained from the graph of y= f(x).

(a) y = f(x – 2)

Can somebody help telling what does it mean? what does it want us to do? ​

Answers

Answer:

see explanation

Step-by-step explanation:

Give the graph of y = f(x) then y = f(x + a) represents a horizontal translation of y = f(x)

• If x > 0 then a shift to the left of a units

• If x < 0 then a shift to the right of a units

Thus

y = f(x - 2) is the graph of y = f(x) translated 2 units right

what's the opposite of -4

Answers

Answer:

4

Step-by-step explanation:

It's a opposite of -4 so the opposite would be 4

Answer:

4

Step-by-step explanation:

The opposite of -4 is 4

In addition

The absolute value of -4 is also 4

Therefore, the answer is 4.

Cameron purchased an electric guitar for $1,875. The value of the guitar depreciates by 20% each year. In how many years will the guitar be valued at $768?

Answers

Answer:

4 years

Step-by-step explanation:

Hope this helps

Answer:

4 years

Step-by-step explanation:

do 1,875 divided by 768

what is the slope of this equation, v=3x+60

Answers

The slope is 3.

In y=mx+b, the number before x (or m) is the slope.

Answer:

slope=3

Step-by-step explanation:

what is this 2x-5+22=?

Answers

Answer: 2x+17

Step-by-step explanation: add -5 and 22

Answer:[tex]\boxed{\boxed{\sf{2x+17}}}[/tex]Solution Steps:

______________________________

1.) Add −5 and 22:[tex]-5+22=17[/tex]

 - You could also solve this by  flipping the numbers around and subtracting 22 - 5, Which still gives you 17.

So your answer is [tex]\bold{(2x+17)}[/tex].

______________________________

12z−6+15z=27z−5 how many solutions

Answers

3 is the answer

I did the test

Answer:

no solutions

Step-by-step explanation:

if you simplify the left side you will get 27z - 6 and the other side is 27z - 5

no value for 'z' will ever get these two expressions to equal each other because 6≠5

The floor of a rectangular shed is 12 ft by 14 ft.

What is the area of the floor in square feet?

Answers

Answer:

Step-by-step explanation:

S=a*b=12*14=168feet²

3x2 · 2x5 whats the answer please twenty five points to show work

Answers

Answer:

60

Step-by-step explanation:

3x2=6

2x5=10

6x10=60

????

what is 64 thousandths in decimal form​

Answers

I am pretty sure it is 0.064. Hope this helps

The answer is .00064, because if you were to make in Thousand form it would look like this ➡️ 64,000. See the 3 Zeros? that is what makes it a thousand. now wht woul happen if we switched that around? well it would look like this ➡️ .00064. as you can see, there are 3 zeros, like in the last example. so your answer is ''.00064''

What is the y-intercept of the line?
110
A
2
B
3
000
-7
-6
D

Answers

the correct answer is 3

guys I'm stuck plz help!!!!​

Answers

Answer:

I believe 70

Step-by-step explanation:

A baseball card that originally cost $24 has been decreasing in value
at an annual rate of 6% for the last 5 years. What is the present value?

Answers

Answer:

I believe it is four dollars

Kai has 32 tickets. He wants to put the same number of tickets into 4 boxes.
Which number sentence could be used to find the number of tickets Kai should
put in each box?

Answers

Answer:

32 tickets divided by 4 boxes.

Step-by-step explanation:

He wants to divide the 32 tickets between the 4 boxes. So it would be 32 divided by 4. Hope this helps and have a great day!

Monday Bellwork Which solution would make this equation have infinitely many solutions? 6(x – 3) + x = 7x +

-18, -9, 18, or 9​

Answers

Answer:-18

Step-by-step explanation:

6(x−3)+x=7x−18

Step 1: Simplify both sides of the equation.

6(x−3)+x=7x−18

(6)(x)+(6)(−3)+x=7x+−18(Distribute)

6x+−18+x=7x+−18

(6x+x)+(−18)=7x−18(Combine Like Terms)

7x+−18=7x−18

7x−18=7x−18

Step 2: Subtract 7x from both sides.

7x−18−7x=7x−18−7x

−18=−18

Step 3: Add 18 to both sides.

−18+18=−18+18

0=0

-20t>-80 what is t and how do you graph it on a nuberline

Answers

Answer:

Step-by-step explanation:

Divide both sides by -20. If you divide by a negative, you have to switch the inequality sign. So now you have this for t:

t < 4

Draw a circle around 4 on a number line, but do not shade it in. Then everything below 4 is the right answer for the value of t.

what is the solution to the equation below?​

Answers

Answer: x = -27

Step-by-step explanation:

Answer:

x=-27

Step-by-step explanation:

to understand thisyou need to know about:equationPEMDASgiven:[tex] - 8 = \frac{x}{3} + 1[/tex]to solve[tex]x[/tex]let's solve:

[tex] step - 1 : define \\ - 8 = \frac{x}{3} + 1[/tex]

[tex]step - 2 : \\ rewrite[/tex]

[tex]\frac{x}{3} + 1= - 8[/tex]

[tex]step - 3 : \\ subtract \: 1 \: from \: both \: sides[/tex]

[tex] \frac{x}{3} + 1 - 1 = - 8 - 1[/tex]

[tex] \frac{x}{3} = - 9[/tex]

[tex]step - 4 : \\ multiply \: both \: sides \: by \: 3[/tex]

[tex] \frac{x}{3} \times 3 = - 9 \times 3[/tex]

[tex] \huge \therefore x = - 27[/tex]

Me.Lee ordered some pizzas to be delivered. The bill for the pizza was m dollars. Mr. Lee tipped the pizza delivery driver 15% of the bill. Write an expression for the total amount of money Mr. Lee paid

Answers

The expression would be: m + 0.15m and to know how much she paid I believe it would be 26.09 (rounded)

What is the number of cycles of y=1+10sin(θ−2π/3) between 0 and 2π?

Answers

Answer:

D. 2/3

Step-by-step explanation:

What number is missing in this sequence? 1, 2, 4, 7, 11, ___, 22

Answers

Answer:

16

Step-by-step explanation:

If you answer both of these i will give
Brainliest ( if thats how you spell it )

Answers

Answer:

first one:4/10

second one: 8/24

Step-by-step explanation:

i think this works but a hundred 100% sure though.

here you go hope its correct.

solve for c
c/6=12


A.2
B.6
C.18
D.72

Answers

Its A becuase 12/6=2

what do you call a crushed angle ?

Answers

Answer:

A Rectangle

Step-by-step explanation:

a wrecked angle

A crushed angle is commonly referred to as a "rectangle" or a "wrecked angle".

When an angle is crushed or collapsed, its sides are no longer straight or evenly spaced, and its vertex may be shifted or deformed.

This deformation can occur in various contexts, such as in physical objects or in mathematical diagrams. The angle's original shape has been significantly changed due to external influences.

Thus, a crushed angle is commonly referred to as a "rectangle" or a "wrecked angle".

This is a play on words, as a rectangle is a shape with four right angles, and when an angle is crushed or wrecked, it can resemble a rectangle.

Learn more about the rectangles here:

brainly.com/question/20693059

#SPJ6

simplify each expression 6X + 2x​

Answers

8x
Hope that helps
......

What kind of triangle is this?

Answers

Answer:

acute

Step-by-step explanation:

all the angles are below 90 degrees

Answer:

ACUTE IS THE KIND OF TRIANGLE I SEE

Step-by-step explanation:

I HOPE IT HELPS :)

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