Fred is given a rectangular picture frame as a birthday gift. If the length of the frame is represented by 4x-2 and the width of the frame is represented by 2x + 1, find the area of the picture frame in square inches.

Answers

Answer 1
Answer:  8x^2 - 2

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

Explanation:

Let L = 4x-2 be the length and W = 2x+1 be the width. The order of L and W doesn't matter.

The goal is to find the area = L*W

We could simply say L*W = (4x-2)*(2x+1) and be done. Though I have a feeling your teacher wants you to expand that out.

Let's do so

(4x-2)*(2x+1)

L(2x+1) .... replace "4x-2" with L

2xL + L .... distributive property

2x( L ) + 1( L )

2x( 4x-2 ) + 1(4x - 2) .... L replaced with 4x-2

2x*4x + 2x*(-2) + 1*4x + 1*(-2) .... distributive property twice more

8x^2 - 4x + 4x - 2

8x^2 - 2 is the final answer

Side note: you can use the FOIL rule or the box method as two alternatives to get the same answer.


Related Questions

CAN SOMEONE PLEASE HELP ME!!! I REALLY NEED IT

n = ___

CAN SOMEONE PLEASE HELP ME!!! I REALLY NEED ITn = ___

Answers

Answer:

i got n =2

Step-by-step explanation:

setted up a proportion, so 4/n+6 = 9/n+16 and solved from there and got 2.

A baseball player has a batting average of 0.155.What is the probability that he has exactly 1 hits in his next 7 at bats? Round your answer to four decimal places. The probability the baseball player has exactly 1 hits in his next 7 bats is

Answers

The probability the baseball player has exactly 1 hit in his next 7 bats is 0.3429. Because the batter can either hit or not hit the ball, a binomial probability distribution is used to model this random variable.

A batting average is used to describe the frequency of a batter hitting safely in a baseball game. It is expressed as a decimal and is calculated by dividing the number of hits by the number of at-bats. A batting average of 0.155 implies that the player has 15.5 hits in every 100 at-bats.The number of hits that a batter will have in any given at-bat is a random variable.

A binomial probability distribution is a probability distribution that describes the number of successes (or failures) in a fixed number of independent trials, each of which has only two outcomes, success and failure. Because the trials are independent, the probability of success is constant.The formula for a binomial probability distribution is:P(x) = (nCx) * p^x * (1-p)^(n-x)where:x = the number of successesn = the number of trialsp = the probability of success in any one trialq = the probability of failure in any one trial (1-p)nCx = the number of combinations of n items taken x at a time.

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b) Obtain reduced cost matrix for travelling sales person problem. Consider the instance define by the cost matrix: [8M] 00 5 1 10 6 4 12 7 1 Pa 8 a 3 7 6 1 8نرا 4 16 9 3 8 a 16 12 7 6 00 *****

Answers

The reduced cost matrix for travelling salesperson problem in the given instance is shown below. The Travelling Salesperson Problem (TSP) is a classical combinatorial optimization issue that belongs to the category of NP-Hard problems.

This problem can be resolved using a branch and bound algorithm or by using dynamic programming.The reduced cost matrix for the given travelling salesperson problem instance The computation of the reduced cost matrix for travelling salesperson problem involves two steps: Identify the smallest element of each row and subtract the value from all the values in the row.

Identify the smallest element of each column and subtract the value from all the values in the column.In the given instance, the smallest element of each row is highlighted in bold. Therefore, after performing Step 1 the matrix becomes the matrix becomes Hence, the reduced cost matrix for the travelling salesperson problem is obtained.

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A semicircle had an area of 76.97 km squared. Find it's radius

Answers

Answer:

\(r = 7\ km\)

Step-by-step explanation:

The formula for the area of a circle is:

\(A = \pi r^2\)

Since we know that a semicircle is half of a circle, we can say the area is:

\(A = \frac{1}{2}\pi r^2\)

From here solve for r:

\(76.97 = \frac{1}{2}\pi r^2\\153.94 = \pi r^2\\\frac{153.94}{\pi} = r^2\\r = \sqrt{\frac{153.94}{\pi}}\\r = 7\)

Order the expressions by choosing >,

Order the expressions by choosing >,

Answers

Answer:

1. 3^4 x 3^3 < 3^12

2. 3^3 x 4^3 < 12^4

3. 3^4 x 4^3 > 12^3

If 33% of a man monthly salary is Birr of 6600, what is his total monthly salary? A. 23,200 B. 20,000 C. 9,850 D. 16,450​

Answers

Answer:

The correct answer is B. 20,000

Step-by-step explanation:

To determine the man's total monthly salary, we can set up a simple equation using the given information. Let's denote the total monthly salary as "x."

According to the information provided, 33% of the man's monthly salary is equal to Birr 6600. We can express this relationship mathematically as:

0.33x = 6600

To solve for "x," we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 0.33:

x = 6600 / 0.33

Evaluating the right side of the equation gives:

x ≈ 20,000

Therefore, the man's total monthly salary is approximately Birr 20,000.

Hence, the correct answer is B. 20,000.

Kaci earned scores of 78, 88, 87, and 91 on her first four science tests. Shehas one more test to take and wants to get an average score of 80 or more on hertests.The following is the inequality that represents this situation, where I is the score ofher fifth test(78+88+87+91+x)5> 80What is the minimum score Kaci can receive on her fifth test to have an averagescore of at least 80?

Answers

Given:

Kaci earned scores of 78, 88, 87, and 91 on her first four science tests.

She has one more test to take and wants to get an average score of 80 or more on her tests.

Let the score of the final test = x

So, the average of the scores will be equal to or greater than 80

So, we have the following inequality

\(\frac{78+88+87+91+x}{5}\ge80\)

Solve for x:

\(\begin{gathered} \frac{78+88+87+91+x}{5}\ge80\rightarrow\times5 \\ 78+88+87+91+x\ge80\times5 \\ 344+x\ge400 \\ x\ge400-344 \\ x\ge56 \end{gathered}\)

So, the minimum score will be 56

p−1=5p+3p−8
Anyone help. Its due at 11:59 pm :( please help

Answers

Answer:

p = 1

Step-by-step explanation:

p - 1 = 5p + 3p - 8(collect like terms)

p - 1 = 8p - 8(add 1 on each side)

p = 8p - 7(subtract 8p on each side)

-7p = -7 (divide by -7)

p = 1

Hi can someone solve the inequalities?


8y - 5 < 3

3p + 2 > -10

-2 > m/6 -7

Answers

Hey there!

[Question #1.]

8y - 5 < 3

ADD 5 to BOTH SIDES

8y - 5 + 5 < 3 + 5

CANCEL out: -5 + 5 because it gives you 0

KEEP: 3 + 5 because it help solve for the y-value

NEW EQUATION: 8y < 3 + 5

SIMPLIFY IT!

8y < 8

DIVIDE 8 to BOTH SIDES

8y/8 < 8/8

CANCEL out: 8/8 (on the LEFT side) because it gives you 1

KEEP: 8/8 (on the RIGHT side) because it helps you get the y-value

NEW EQUATION: y < 8/8

SIMPLIFY IT!

y < 1

Therefore, your answer is: y < 1 ; it is an OPEN circle shaded to the LEFT

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[Question #2.]

3p + 2 > -10

SUBTRACT 2 to BOTH SIDES

3p + 2 - 2 > -10 - 2

CANCEL out: 2 - 2 because it gives you 0

KEEP: -10 - 2 because it help solve for the p-value

NEW EQUATION: 3p > -10 - 2

SIMPLIFY IT!

3p > -12

DIVIDE 3 to BOTH SIDES

3p/3 > -12/3

CANCEL out: 3/3 because it gives you 1

KEEP: -12/3 because it helps solve for the p-value

NEW EQUATION: p > -12/3

SIMPLIFY IT!

p > -4

Therefore, your answer is: p > -4; it is an OPEN circle shaded to the RIGHT

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[Question #3.]

-2 > m/6 - 7

m/6 - 7 < -2

1/6m - 7 < -2

ADD 7 to BOTH SIDES

1/6m - 7 + 7 < -2 + 7

CANCEL out: -7 + 7 because it gives you 0

KEEP: -2 + 7 because it help solve for the m-value

NEW EQUATION: 1/6m < -2 + 7

SIMPLIFY IT!

1/6m < 5

MULTIPLY 6 to BOTH SIDES

1/6m * 6 < 6 * 5

CANCEL out: 1/6 * 6 because it gives you 1

KEEP: 6 * 5 because it help solve for the m-value

NEW EQUATION: m < 6 * 5

SIMPLIFY IT!

m < 30

Therefore, your answer is: m < 30

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Please help!!! what are the 3 solutions of 0​

Answers

No solution, many solution
No solutions many solutions and solutions

What is the average rate of change for this quadratic function for the interval from x = 0 to x = 2?

Answers

Answer:

8

Step-by-step explanation:

The average rate of change for this quadratic function for the interval from x = 0 to x = 2 is -2

What is a function?

A relation is a function if it has only One y-value for each x-value.

The average rate of a function f(x)  from x=a to x=b is given as:

= f(b)-f(a)/b-a

Clearly we are asked to find the average rate of change from x=0 to x=2.

i.e. a=0 and b=2

Also, from the graph it could be observed that:

f(0)=1

and f(2)=-3

=f(2)-f(0)/2-0

=-3-1/2

=-4/2

=-2

Hence, the average rate of change for this quadratic function for the interval from x = 0 to x = 2 is -2

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What is the average rate of change for this quadratic function for the interval from x = 0 to x = 2?

the ramp measures 20 feet long and is 5 feet from the ground what is the slope of the ramp?

Answers

First we need to find how far away the base of the ladder is from what it is leaning against. The ramp is the hypotenuse and the height from the ground in a leg. Let’s use Pythagorean’s theorem.

a^2 + b^2 = c^2

Substitute

a^2 + (5)^2 = (20)^2

Solve for a^2

a^2 = (20)^2 - (5)^2

Solve for a

a = 5 √15

The slope will be rise over run

5/5 √15 = √15/15 or 0.258…

use these equations to find ∂z/∂x and ∂z/∂y for the following. x9 y8 z4 = 5xyz

Answers

Derivative of z with respect to  x is -2 / z and Derivative of z with respect to  y is ∂z/∂y = -7 / (4z).

To find derivatives ∂z/∂x and ∂z/∂y for the equation x^9 y^8 z^4 = 5xyz, follow these steps:

1. Rewrite the equation in the form z^4 = (5xyz) / (x^9 y^8).

2. Take the natural logarithm (ln) of both sides to simplify the equation: ln(z^4) = ln[(5xyz) / (x^9 y^8)].

3. Apply the power rule and the properties of logarithms: 4 * ln(z) = ln(5) + ln(xyz) - ln(x^9) - ln(y^8).

4. Differentiate both sides with respect to x: (4 * ∂ln(z) / ∂x) * (∂z/∂x) = ∂ln(x) / ∂x - 9 * ∂ln(x) / ∂x.

5. Simplify the equation and solve for ∂z/∂x: ∂z/∂x = (1 - 9) / (4z).

6. Similarly, differentiate both sides of the equation (from step 3) with respect to y: (4 * ∂ln(z) / ∂y) * (∂z/∂y) = ∂ln(y) / ∂y -      8 * ∂ln(y) / ∂y.

7. Simplify the equation and solve for ∂z/∂y: ∂z/∂y = (1 - 8) / (4z).

So, ∂z/∂x = -2 / z and ∂z/∂y = -7 / (4z).

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Which rectangle is similar to a rectangle with length of 12 yards and 23 yards?
a rectangle with length 14 yards and 13 yards

a rectangle with length 14 yards and 25 yards

a rectangle with length 2 yards and 3 yards

a rectangle with length 212 yards and 223 yards

Answers

Answer:

a rectangle with 2 yards and 3 yards

Step-by-step explanation:

12 yards and 23 yards

x and 2x - 1

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

2 and 3 = x and 2x - 1

2 and 2(2) - 1 = 2 and 3

I might be wrong.

Which of these two fractions are equivalent to 1/4:
3/15
2/8
5/20
11/40
Thankyou for helping :) x​

Answers

Answer:

3\15

Step-by-step explanation:

hope this helps

Answer:

\(\frac{2}{8}and\frac{5}{20}\)

Step-by-step explanation:

\(\frac{3}{15}=\frac{1}{5}\)

\(\frac{2}{8}=\frac{1}{4}\)

\(\frac{5}{20}=\frac{1}{4}\)

\(\frac{11}{40}=\frac{11}{40}\)

-2x +
= -2x - 6 what is the missing constant?

-2x += -2x - 6 what is the missing constant?

Answers

Answer:

-6

Step-by-step explanation:

by using -6 any value of x would make the equation true resulting in infinitly many solutions

8. To buy a laptop computer, Elaine
borrowed $2,000 for 4 years at an annual simple
interest rate of 5%. What is the total amount that
she will repay? (red)

Answers

Answer:

2400

Step-by-step explanation:

Interest = Principal * Rate * Time

             = 2000 * .05 * 4

             = 400

Total amount to pay:

Principal + Interest

2000 + 400 = 2400

Can you please help me!

Can you please help me!

Answers

Answer:

16

Step-by-step explanation:

Pythagoras theorem was used

A line passes through the two points (-4,6) and (2,-5). Calculate the following parts:

Answers

A line passes through the two points (-4,6) and (2,-5). 11x +6y - 80 = 0 is the given line equation.

What is the slope of a line which passes through points ( p,q) and (x,y)?

Its slope would be:

\(m = \dfrac{y-q}{x-p}\)

The slope of parallel lines are same. Slopes of perpendicular lines are negative reciprocal of each other.

The slope m of the line is given as

\(m = \dfrac{y-q}{x-p}\\\\ m = \dfrac{-5-6}{2+4}\\\\ m = \dfrac{-11}{6}\)

The equation of a line is  

\(( y -y_0) = m (x - x_0)\\\\( y -6) = \dfrac{-11}{6} (x+4)\\\\6( y -6) = (-11) (x+4)\\\\6y -36 = (-11x +44)\\\\11x +6y - 80 = 0\)

Hence, the equation is  11x +6y - 80 = 0

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The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 6 to 5 . If there were 3490 no votes, what was the total number of votes?

Answers

The total number of votes will be equal to 7678.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 6 to 5. If there were 3490 no votes.

The number of yes votes will be,

Y/ N = 6 / 5

Y = ( 6 x N ) / 5

Y = ( 6 x 3490 ) /5

Y = 4188

Total number of votes,

T = Y + N

T = 4188 + 3490

T = 7678

Therefore, the total number of votes will be equal to 7678.

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The total amount of kinetic and potential energy in a system is called

Answers

The total amount of kinetic and potential energy in a system is called mechanical energy.

Mechanical energy is the sum of kinetic energy and potential energy within a system. Kinetic energy (KE) is the energy possessed by an object due to its motion, and it is calculated using the formula KE = (1/2)mv², where m is the mass of the object and v is its velocity. Potential energy (PE) is the energy possessed by an object due to its position or condition, and it can be gravitational potential energy, elastic potential energy, or other forms. The total mechanical energy (ME) is obtained by adding the kinetic and potential energy together, so ME = KE + PE.

In summary, the total amount of kinetic and potential energy in a system is referred to as mechanical energy. This energy accounts for both the motion and position-related energies within the system. The calculation of mechanical energy involves summing the kinetic energy, which depends on the mass and velocity of the objects, with the potential energy, which can arise from factors such as gravity or elasticity. Understanding and analyzing the mechanical energy in a system can provide insights into its overall energy distribution and behavior.

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Solve graphically 2x-y=5 and x-y=1​

Answers

The solution to the system of equations that is solved graphically is (4, 3). See the diagram below.

How to Solve a System of Equations Graphically?

To solve a system of equations graphically, you need to follow these steps:

Write the system of equations in the form, y = mx + b, where m is the slope and b is the y-intercept.Graph each equation on the same set of axes. To do this, plot at least two points for each equation, and then connect the points with a straight line.Locate the point where the two lines intersect. This point is the solution to the system of equations.

Thus, the equations 2x - y = 5 and x - y = 1 are graphed below, which shows they intersect at (4, 3).

The solution is (4, 3).

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Solve graphically 2x-y=5 and x-y=1

Please answer I’ll give u brainliest it’s 29 points btw
Serious answers pls.

Please answer Ill give u brainliest its 29 points btwSerious answers pls.

Answers

Answer:

4x + (6(x-y)) or 10x + 6y

Step-by-step explanation:

A Pear costs (x) Pesos

An Orange costs (y) Pesos less than a Pear

Since an Orange is (y) Pesos less than a pear (x), we can find the cost of a Pear by subtracting (y) from (x) leaving (x-y) as the cost of an Orange

Since there are 4 Pears we use 4(x) to find the cost of Pears and to get the total cost of it all we use a half dozen (6) and use the equation for the cost of an Orange leaving us with 6(x-y)

The final total will be calculated with 4(x) + (6(x-y))

Or the final total can be simplified as 10x + 6y

Answer:

10x - 6y

Step-by-step explanation:

4x + 6 ( x - y )

= 4x + 6x - 6y

= 10x - 6y

Olivia picked 482 apples from the orchard’s largest apple tree. She divided

the apples evenly into 4 baskets. How many apples are in each basket? How

many are left over? pls make the solution detailed! :)

Answers

There are 120 apples in each basket and 2 leftovers

How to determine the number of apples in each basket?

From the question, the given parameters are:

Number of apples = 482

Number of baskets = 4

the number of apples in each basket is calculated as

Apples in each basket = Number of apples/Number of baskets

Substitute the known values in the above equation

So, we have the following equation

Apples in each basket = 482/4

Evaluate

Apples in each basket = 120.5

Remove the decimal

Apples in each basket = 120

The number of leftover

In (a), we have

Apples in each basket = 120.5

The decimal part is

Decimal = 0.5

The number of leftover is then calculated as

Leftover = Decimal * Baskets

So, we have

Leftover = 0.5 * 4

Evaluate

Leftover = 2

Hence, there are 2 leftovers

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I need help please! asap

I need help please! asap

Answers

Answer:

my guess is c

Step-by-step explanation:

bxnxnnsnsndnjdjdjd

Liz wants to buy a shirt for $25.what will the total cost after tax be if Liz buys the shirt in Springfield

Answers

What’s the percentage of the tax ?

Answer:

ya

Step-by-step explanation:

Tiffany was at bat
18
18 times during a softball tournament. She had
6
6 base hits for the tournament. What is the ratio that describes the number of base hits to the number of times at bat?

Answers

Answer:

6:18 hope this helps good luckkk

PLEASEE HELP I'LL GIVE BRAINLIEST.
Btw on the box when it says "12 mince" that's a mistake it meant to say "18"​

PLEASEE HELP I'LL GIVE BRAINLIEST.Btw on the box when it says "12 mince" that's a mistake it meant to

Answers

Answer:

No, Elias doesn't have enough quantity of each ingredient to make 45 mince pies.

Step-by-step explanation:

For making 18 Mince Pies Elias needs

200g Butter

225g flour

150g sugar

250g Mincemeat

1 egg

Inorder to make 45 mince pie's he's gonna need 45/18=2.5 times the ingredients he needs to make 18 Mince Pies.

As he doesn't have enough Mincemeat (has only 600g but needs 250*2.5=625g of mincemeat)

As he is short of 25g of Mincemeat, he is unable to make 45 Mincepies.

The volume of a soap bubble is 555.4 mm^2 Find the radius and diameter of the soap bubble. Use 3.14 for pi

Answers

Answer:

radius=11.5

diameter=23

Step-by-step explanation:

The volume of a sphere is V=4/3 Pi r^3

We can use this to solve for the radius.

555.4= 4/3 (3.14)r^3

Solve for r how you would any other equation. Multiply 4/3 and 3.14.

555.4=4.187 r^3

Divide both sides by 4.187

132.65=r^3

To get rid of the ^3, find the cube root of both sides on a calcualtor.

r= 11.5

The diameter is the radius time two.

11.5 (2)=23.

Hope this helps!

Note: When I say both sides, I mean both sides of the = sign.

How many squares will be in figure 10!?

How many squares will be in figure 10!?

Answers

Answer:

98 i believe,

Step-by-step explanation:

hope this helps, have a great day :)

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