(3a - b)(a + b) - (3a - b)²

Answers

Answer 1
the answer is 13a -2b

Related Questions

Please hurry! I have no idea what to do lol

Answers

ok

under the -4 is a 16

under the 0 is a 4

under the 8 is a -20

Your Welcome

What is the square root of -1?

Answers

Answer:                     √-1 = 1 i

Step-by-step explanation:

1. Solve each of these equations.
2(x + 5) = 3x +1
X=
3y - 4 = 6 - 2y
y =
3(n + 2) - 916-n)
n=

Answers

Answer:

1.) x = 9

2.) y = 2

3.) i dont think that’s the right “equation” since it doesnt have the “=’’ in it

Hope this helps!


1. A company's payroll is $192,520. The cost to process paychecks is about
1.8% of the total payroll. About how much does processing paychecks cost?

Answers

[tex]\huge\mathfrak{question}[/tex]

A company's payroll is $192,520. The cost to process paychecks is about 1.8% of the total payroll. About how much does processing paychecks cost?

what we have to do is find how much the percentage costs

[tex] \huge\mathfrak{eqution}[/tex]

[tex]192520 \times 1.8 \div 100[/tex]

solve

our answer is

[tex] \huge \green{3465.36}[/tex]

it costs 3465.36 dollars for the total payrolls.

Help help help help help help help help help plz

Answers

Answer:

B

Step-by-step explanation:

Reflections are mirror images over what they are being reflected off.

Think of your own reflection in the mirror. It's not exact, like pictures is it? You could also think of it as folding a piece of paper that has wet paint on it in half. The painted image transfers to the other side of the paper, but it's not exactly the same as the original.

I don't know how exactly to explain it, but that is how I think of it.

When you divide a whole number by a whole number, your quotient will always be less than the dividend. True or false?

Answers

Answer: true

Step-by-step explanation: Therefore, when dividing a unit fraction by a whole number, the quotient is always a unit fraction which is less than the dividend.

Help me please ( ; _ ; )/

Answers

l = 95


l=20+75
l=20+75
Add 20 and 75.


l=95

Answer:

length= 2/25 × 250g + 75

= 20+75

= 95

Find the roots of each equation by factoring

Answers

Answer:

x=7 x=-7

Step-by-step explanation:

Solution is attached.

Calculate the net force needed to accelerate a 200 kg piano 0.25 m/s^2

Answers

Answer:

50 N

Step-by-step explanation:

Net Force= Mass x Acceleration

F=200x0.25

F= 50 N

The net force needed to accelerate a 200 kg piano is 50 Newtons.

What is the force?

A force is an effect that can alter an organization’s behavior according to physics. A mass-containing object can change its velocity, or accelerate, as a result of a force. An obvious way to define force is as a thrust or a pull. A vector quantity is called a force since it has both strength and direction.

Force is given as,

F = ma

Where m is the mass of the object, a is the acceleration of the object, and F is the force exerted on the object.

The value of mass is 200 kg and the acceleration of the piano is 0.25 m/s².

Then the force on the piano is given as,

F = 200 x 0.25

F = 50 N

The net force needed to accelerate a 200 kg piano is 50 Newtons.

More about the force link is given below.

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Need help with the second one pre college

Answers

Answer:

is it correct

Step-by-step explanation:

im not sure

can some one help me out quick please Graph the solution to this inequality on the number line. w – 0.7 > -1.1 First select the correct ray. Then select the location of the endpoint to plot the inequality on the number line.​

Answers

Answer:

The answer is the 4th one

Answer: This is the right answer

Step-by-step explanation:

plzz help me plzzzzz

Answers

Answer: its 49

Step-by-step explanation:

Solve the system using elimination.
3x + 5y = 15
x+y=7
Type your answer as a coordinate pair in the textbox
below.

Answers

Step-by-step explanation:

3x + 5y = 15

x + y = 7

This can be written as ,

3x + 3y = 21

Subtracting i and iii ,

5y - 3y = 15 -21

2y = -6

y =-6/2

y = -3

So that ,

x = 21 - 3*-3 /3

x = 21 +9/3

x = 30/3

x = 10

Answer:

3x+5y=15x+y=7

Step-by-step explanation:

3x+15x+5y+y=7

18x+6y=7

During a visit to a primary care physician's office, the probability of having neither lab work nor referral to a specialist is 0.21. Of those coming to that office, the probability of having lab work is 0.41 and the probability of having a referral is 0.53. What is the probability of having both lab work and a referral?​

Answers

Answer: 0,06?

Step-by-step explanation:

The probability of having both lab work and a referral is 0.94

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

It is given that the probability of having neither lab work nor referral to a specialist is 0.21.

The probability of having lab work is 0.41 and the probability of having a referral is 0.53.

The probability of having both lab work and a referral;

0.41 + 0.53

= 0.94

Therefore, The probability of having both lab work and a referral is 0.94

Learn more about probability here;

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Solve for z. z/25 > 5

Answers

Answer:

well isolate z multiply by 25 to both sides and we get z > 125

Answer:

[tex]z>125[/tex]

Step-by-step explanation:

[tex]\frac{z}{25}>5[/tex]

All you need to do is solve for z, so multiply both sides by 25:

[tex]z>125[/tex]

This table represents the number of inches, and, if it goes after him, month and a new pot. When graft, all the points in the table lie on the same line. What are the slope and y-intercept of the line? A) slope = 2, y-intercept = -4. B) slope = 1, y-intercept = 2. C) slope = -2, y-intercept = -4. D) slope = -1, y-intercept = 2

Answers

Answer:

r: Slope = 5/4

y-intercept = 2

Step-by-step explanation:

We have the table:

Months, m            Plant height in inches, n

0                           2

2                           4.5

4                            7

6                            9.5

We want a linear relationship to represent this table.

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

In this case we can select any pair of points, for example, i will choose the first two:

(0, 2) and (2, 4.5)

Then the slope is:

a = (4.5 - 2)/(2 - 0) = (2.5/2) = 1.25 = 5/4

Then our line can be written as:

y = (5/4)*x + b

To find the value of b, we can replace the values of any of the points in the equation, for example, i will use the point (0, 2) or x = 0, y = 2.

2 = (5/4)*0 + b

2 = b

Then our equation is:

y = (5/4)*x + 2.

Slope = 5/4

y-intercept = 2

the tree has 3 acorns under it. each 3 more fall under the tree. how many acorns are under the tree after the first 5 days?

Answers

Answer:

18

Step-by-step explanation:

3x6 = 18

1 1/5 + 3/4 - (-3 3/5) - (-2 1/4)

Answers

Step-by-step explanation:

[tex] = 1 \frac{1}{5} + \frac{3}{4} - ( - 3 \frac{3}{5} ) - ( - 2 \frac{1}{4} )[/tex]

[tex] = 1 \frac{1}{5} + \frac{3}{4} + 3 \frac{3}{5} + 2 \frac{1}{4} [/tex]

[tex] = (1 + 3 + 2) + ( \frac{1}{5} + \frac{3}{4} + \frac{3}{5} + \frac{1}{4} )[/tex]

[tex] = 6 + ( \frac{4 + 15 + 12 + 5}{20} )[/tex]

[tex] = 6 + \frac{36}{20} [/tex]

[tex] = 1 + 6 + \frac{16}{20} [/tex]

[tex] = 7 + \frac{4}{5} [/tex]

[tex] = 7 \frac{4}{5} [/tex]

Answer:

The answer is 61/10

Step-by-step explanation:

1 1/5 + 3/4 - (- 3 3/5) - (- 2 1/4)

1 × 5 + 1/5 + 3/4 - (- 3 × 5 + 3/5) - (- 2 × 4 + 1/4)

6/5 + 3/4 + 12/5 + 7/4

6/5 + 12/5 + 3/4 + 7/4

(6 + 12/5) + (3 + 7/4)

18/5 + 10/4

18/5 + 5/2

Now, Cross Multiply

18 × 2/5 × 2 + 5 × 5/2 × 5

36/10 + 25/10 = 61/10

Thus, The answer is 61/10

-TheUnknownScientist 72

Check out this cube: The figure presents a cube. The length of one edge is labeled as 4 units The figure presents a cube. The length of one edge is labeled as 4 units Find the surface area of the cube (above) using its net (below). The figure presents a surface net of a cube. The net consists of 4 squares connected in a row. The second square from the left is also connected to a square above it, and a square below it. The length of one side of one square is labeled as 4 units.

Answers

Answer: 96

Step-by-step explanation: A=6a(2)=6·4(2)=96

The 2's are squared

Simplify the expression.
(9+41)

Answers

Answer:

50

Step-by-step explanation:

if you add the 9 to the 41 you get 50

Sierra wants to buy a new bike. The bike she likes is on sale for 40% off its original price. Her parents agree to pay for $75 of the cost. If the original cost of the bike is $200, how much of her own money will Sierra have to pay? (No sales tax is charged.)

Answers

Answer:

$45

Step-by-step explanation:

If the original price was $200 you subtract by 40%. After that you subtract it again by $75 and get the cost of how much she will need to pay.

Given the perimeter of a rectangle and either the length or width, find the unknown measurement using the appropriate formula.
The perimeter is 96 in, and the length is 28 in.
The width of the rectangle is in

Answers

Answer:

2,688

Step-by-step explanation:

96 x 28 = 2,688

Write 43.25 as a mixed number. help please

Answers

Answer:

43 ¼

a mixed number consists of a whole number and a fraction. 0.25 = ¼

therefore the answer is 43¼

Answer:

43 1/4

Step-by-step explanation:

Just add 43 and the equivalent of .25 is 1/4

There is your answer! :)

What is the probability of tossing two fair coins 200 times?

Answers

Answer:

When 2 coins are tossed, the possible outcomes can be {HH, TT, HT, TH}. Thus, the total number of possible outcomes = 4 Getting only one head includes {HT, TH} outcomes. So number of desired outcomes = 2

Step-by-step explanation:

hope this heps :)

Saeed's house is 6,000 meters away from Anna's house. How many kilometers apart are their houses?

Answers

Answer:

6 kilometers

Step-by-step explanation:

1 kilometer = 1000 meters

6000/1000 = 6

6000 meters = 6 kilometers

The graph shows the favorite activities of campers at a summer camp. Suppose there are 300 campers at the camp. How many campers favor fishing?

Answers

Answer:

42

Step-by-step explanation:

300 is a multiple of 100. On the graph we can see that 14% of the students favor fishing. 14% of 100 is just 14. Once we have that, we can just multiply by 3, since 3 × 100 = 300:

3 × 14 = 42.

The number of campers supporting fishing will be 42

What is the percentage?

The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that the graph shows the favorite activities of campers at a summer camp. Suppose there are 300 campers at the camp. 14% of campers are supporting fishing.

The number of campers supporting fishing will be:-

Number = 300 x 14%

Number = ( 300 x 14 ) / 100

Number = 3 x 14

Number = 42

Therefore, the number of campers supporting fishing will be 42.

To know more about percentages follow

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If A=i +j+2k B=2i+j+2k C=i-2j-2k Find the magnitude of (A+B+C)​

Answers

Answer: (6j-2j + 7k / 89

3/7 of my number is 15 what is my number

Answers

Answer:

35

Step-by-step explanation:

It is easiest to find the full number if you find just 1/7 first. We know that we have 3/7 in total, so divide the number, 15, by 3 to get 1/7 of the total number. This gives 5. Therefore, 5 is 1/7 of the total. Thus, to find the total, simply multiply 5 by 7. This gives the total 7/7, 35.

help asap!!!!!!!!! !!!

Answers

Answer:

$776.59

Step-by-step explanation:

For this question, you must use the formula for being compounded continuously. A=Pe^r*t. A stands for your total balance, the part you are trying to find. P stands for the initial amount. E is a constant. R is the rate of interest. And t is the number of years taken. So, to fill in the formula: P is 550, t is 15, and R would be 0.023. For R, remember not to just take the percentage, you must divide the percent of interest by 100, so 2.3 by 100 to get to 0.023. The formula should know be A= (550) e^ (0.023)(15). plug that into your calculator, and you should get $776.59.

hope this helps!

Please please help please help me please please help me

Answers

Answer:

[tex]y=\frac{3}{4} x+\frac{1}{4}.[/tex]

Step-by-step explanation:

1) if the given points are (5;4) and (-3;-2), then it is possible to make up the required equation:

2) [tex]\frac{x+3}{5+3} =\frac{y+2}{4+2};[/tex]

[tex]\frac{x+3}{4} =\frac{y+2}{3}; \ => \ y=\frac{3}{4} x+\frac{1}{4} .[/tex]

note, the suggested solution is not the only one way.

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