The length of a rectangle is 4 inches more than its width. The area of the rectangle is equal to 4 inches less than 5 times the perimeter. Find the length and width of the rectangle.

Answers

Answer 1
Solution:
Let the width of the rectsngle (b) be x
and the length of the rectangle (l) =x+4
Area of the rectangle (A)=?
Perimeter of the rectangle (P)=?
Now,
P= 2 (l+b)
= 2 (x+4+x)
= 2 (2x+4)
= 4x+8
And,
A= l×b
= x(x+4)
= x^2+4x
According to the question,
A=5P-4
or, x^2+4x =5 (4x+8)-4
or, x^2 +4x =20x+40-4
or, x^2 = 20x-4x+36
or, x^2 = 16x+36
or, x^2-16x-36 = 0
or, x^2-(18-2)x-36 = 0
or, x^2-18x+2x-36 = 0
or, x (x-18)+2 (x-18) = 0
or, (x-18) (x+2) = 0

Either, Or,
x-18 = 0 x+2 = 0
so, x = 18 so, x = -2

Taking the value of x = 18 ( Because the length is always positive)
Length = x+4 = 18+4 = 22 cm
Width = x = 18 cm

Related Questions

How to write 15,409 in word form

Answers

Fifteen thousand, four hundred and nine
Fifteen thousand, four hundred and nine

A mountain climber explored a cliff that is 225 yards high in 5 equal trips. How many yards was one trip?

Answers

225 yards/ 5 trips = 45 yards per trip.

Final answer: 45 yards
Answer: 225/5 = 45 yards

Ten times the sum of half a number and 6 is 8

Answers

10(0.5x + 6) = 8
5x + 60 = 8
5x = 8 - 60
5x = -52
x = -52/5
x = -10.4
Even though we don't know the number yet, we need to give it some kind of label 
so that we can work with it.  We can call it anything.  I'd like to call it ' G '.

The number we're looking for is ' G '.

Half of it is  1/2 G

The sum of that and 6 is          1/2 G + 6

Ten times that is              10 (1/2 G + 6)

The question says that's 8.
                                        So       10 (1/2 G + 6) = 8

Divide each side by  10 :                1/2 G + 6  =  0.8

Subtract  6  from each side:            1/2 G  =  - 5.2

Multiply each side by  2 :                        G  =  - 10.4

That seems like a weird answer.  We should check it.

The number:                                         -10.4
Half the number:                                   - 5.2
The sum of half the number and 6:      -5.2 + 6 = +0.8
Ten times that sum:                                                  8

3/5b-8=4, step by step plz

Answers

(3/5)b-8=4

Add 8 to both sides
(3/5)b-8+8=4+8
(3/5)b= 12

Now divide both sides by (3/5)
(3/5)b/(3/5)= 12/(3/5)
b= 12/(3/5)

12/1* 5/3= 60/3= 20

Final answer: b=20

One minute after it is released, a gas-filled balloon has risen 100 feet. In each succeeding minute, the balloon rises only 50% as far as it rose in the previous minute. How far will the balloon rise in 5 minutes?

Answers

The amount that it rises each minute forms a geometric sequence...

a(n)=ar^(n-1), and we know that a=100 ft and r=1/2 so

a(n)=100(1/2)^(n-1)

And the sum of a geometric sequence is:

s(n)=a(1-r^n)/(1-r)

s(n)=100(1-0.5^n)/(1-0.5)

s(n)=200(1-0.5^n)

So we can call these sums the height function

h(t)=200(1-0.5^t)

So after 5 minutes...

h(5)=200(1-0.5^5)

h(5)=193.75 ft

A line passes through (2, –1) and (8, 4). a. Write an equation for the line in point-slope form. b. Rewrite the equation in standard form using integers

Answers

Final answer:

The slope for a line passing through two points can be found using the formula m = (y2 - y1) / (x2 - x1). By substituting the given points into the formula, the slope for the line passing through (1, 0.1) and (7, 26.8) is found to be 4.5.

Explanation:

The formula for the slope of a line passing through two points (x1, y1) and (x2, y2) is given by:

m = (y2 - y1) / (x2 - x1)

To find the slope for the given points (1, 0.1) and (7, 26.8), we can substitute the values into the formula:

m = (26.8 - 0.1) / (7 - 1) = 4.5

Therefore, the slope for the line passing through the given points is 4.5.

Final Answer:

a. The equation for the line in point-slope form is [tex]\( y + 1 = \frac{5}{6}(x - 2) \).[/tex]

b. The equation in standard form is ( 5x - 6y = 16 ).

Explanation:

a. To find the equation of the line in point-slope form, we use the formula [tex]\(y - y_1 = m(x - x_1)\)[/tex], where (m) is the slope and [tex]\((x_1, y_1)\)[/tex] is a point on the line. Given the points (2, -1) and (8, 4), we can calculate the slope (m) as [tex]\(\frac{{y_2 - y_1}}{{x_2 - x_1}}\)[/tex]. Substituting the values, we get:

[tex]\[ m = \frac{{4 - (-1)}}{{8 - 2}} = \frac{5}{6} \][/tex]

Now, using the point-slope form, we substitute the values for (m) and [tex]\((x_1, y_1)\)[/tex]:

[tex]\[ y + 1 = \frac{5}{6}(x - 2) \][/tex]

b. To convert the equation to standard form, we want to eliminate fractions and express it as (Ax + By = C), where (A), (B), and (C) are integers. Multiply both sides of the equation by 6 to clear the fraction:

6(y + 1) = 5(x - 2)

Distribute the terms:

(6y + 6 = 5x - 10)

Bring all terms to one side:

[ 5x - 6y = 16 ]

So, the equation in standard form is (5x - 6y = 16). This form is preferred for certain applications, making it easier to identify coefficients and intercepts.

(sint+cost)^2=

A.) 1
B.) 1+2sint
C.) 1+sin2t
D.) sin(t^2)+cos(t^2)
E.) sin(t^2)+2sintcost+cos(t^2)

Answers

Hello,

[tex](sin(t)+cos(t))^2=sin^2(t)+cos^2(t)+2sin(t)cos(t)=1+sin(2t)\\ [/tex]
Answer C.

find k if the lines 3x-5y=9 and 2x+ky=11 are a) parallel and b) perpendicular

Answers

a) To find k for parallel lines, equate slopes to get k = -10/3. b) For perpendicular lines, use negative reciprocal slopes to find k = 3/10.

To determine the conditions for parallelism and perpendicularity, we need the slope of each line. The slope-intercept form of a line is y = mx + b where m is the slope.

To find the slope of the first line, we rearrange 3x-5y=9 to the form of y = mx + b, resulting in y = (3/5)x - (9/5). Therefore, the slope is 3/5. For the second line, rearranging 2x+ky=11 gives us y = (-2/k)x + (11/k). The slope of the second line is -2/k.

For the lines to be parallel, their slopes must be equal, so 3/5 = -2/k. Solving for k, we get k = -10/3. For the lines to be perpendicular, the product of their slopes must be -1 (since perpendicular lines have negative reciprocal slopes). This gives us (3/5)(-2/k) = -1, and solving for k yields k = 3/10.

the legs of a right triangle are 75 and 100. what is the length of the hypotenuse?
A: 5 square root 5
B: 250
C:125
D: 625

Answers

right triangle us pythagorean theorem

a^2 + b^2 = c^2

75^2 + 100^2 = C^2

5625 +10000 = c^2

15625 =c^2

c=Sqrt(15625) = 125

hypotenuse = 125

 answer is C

The answer is C, Remeber A^2+B^2 = C^2

Which of the following equations has a graph that crosses the y-axis at a point lower than y=2x^2-1
A.y=-3x^2+1
B.y=3x^2-3
C.y=-3^2-1
D.y=-3^2+3

Answers

The correct answer is:  [B]:  " y = 3x²  − 3 " .
____________________________________________________________

A particular car gets fuel mileage of 36 mpg in the city and 12% more on the highway.
What is the car's fuel mileage on the highway?

Answers

40.32 mpg, because 36x.12=4.32 + 36= 40.32

The car's fuel mileage on the highway is 40.32 mpg, which is 12% more than the 36 mpg it gets in the city.

To determine the car's fuel mileage on the highway, given that it is 12% more than the fuel mileage in the city, we start with the given city mileage of 36 miles per gallon (mpg). We calculate the additional mileage gained on the highway by taking 12% of 36 mpg, which is 0.12 × 36 mpg = 4.32 mpg. Adding this to the city mileage gives the highway mileage:

36 mpg + 4.32 mpg = 40.32 mpg on the highway.

3x (2•5) + 45= n
What is n???

Answers

since N  is unknown it's the answer so here are the steps:
1) 3*(2*5)+45=N
2) 3*10+45=N
3) 30+45=N
4) N=75

At Mei's Printing Company LLC there are two kinds of printing presses: Model A which can print 80 books per day and Model B which can print 30 books per day. The company owns 10 total printing presses and this allows them to print 400 books per day. How many of each type of press do they have?

Answers

A + B = 10.....A = 10 - B
80A + 30B = 400

80(10 - B) + 30B = 400
800 - 80B + 30B = 400
-80B + 30B = 400 - 800
-50B = - 400
B = -400/-50
B = 8 <=== there are 8 model B printers

A + B = 10
A + 8 = 10
A = 10 - 8
A = 2 <=== there are 2 model A printers

Is it possible to represent the number 203 as a sum of several whole numbers such that their product is also equal to 203?

Answers

No. Because the product of 203 cannot be formed because there is nothing that can be multiplied to form 203 (except for decimals/fractions). 203 is not divisible by any number except 1 and 203, so it is not possible no matter what whole numbers in a sum you get.

What is the next value 1I2L3F4

Answers

The given terms can be divided into two sections. First section is for the numbers and the second one for the letters.

1st section:    1, 2, 3, and 4
2nd section:    I, L, F


I is the 9th letter in the alphabet, L is the 12th letter, and F is the 6th letter in the alphabet. 

The pattern observed:
                    I to L:    12 - 9 = 3
                    L to F:    6 - 12 = -6

Next letter should be +9. This means that the letter should be 9 places higher than F. The letter should be O which is the 15th letter. 

answer both questions if you cant see all the answers its fine all u need is the question

Answers

The circumference of Leon's trash can is 76.245 inches
The line segment that could be the diameter is line segment FK

A triangle can be formed with side lengths 5, 7 and 10. True or False

Answers

It will be true because they satisfy the rule of triangle sides:

If triangle has sides a, b and c, it should be true:

a + b > c
a + c > b
b + c > a

Which of the following represents the zeros of f(x) = 4x3 − 13x2 − 37x + 10? 5, −2, −1 over 4 5, −2, 1 over 4 5, 2, −1 over 4 5, 2, 1 over 4

Answers

The 3 zeros are 5,-2, 1/4

Answer:

The three zeros are 5 , -2 and [tex]\frac{1}{4}[/tex]. The second option is correct.

Step-by-step explanation:

The given polynomial is,

[tex]f(x)=4x^3-13x^2-37x+10[/tex]

Use hit and trial method, Put x=-2

[tex]f(x)=4(-2)^3-13(-2)^2-37(-2)+10=0[/tex]

Since the value of function is 0 at x=-2 therefore (x+2) is a factor of the given polynomial.

Divide the given polynomial by using synthetic division or long division.

[tex]f(x)=(x+2)(4x^2-21x+5)[/tex]

Use grouping method to find the factors,

[tex]f(x)=(x+2)(4x^2-20x-1x+5)[/tex]

[tex]f(x)=(x+2)(4x(x-5)-(x-5))[/tex]

[tex]f(x)=(x+2)(x-5)(4x-1)[/tex]

Equate each factor equal to 0.

[tex]x=-2,5,\frac{1}{4}[/tex]

Therefore, the  three zeros are 5 , -2 and [tex]\frac{1}{4}[/tex]. The second option is correct.

2/9 divided by 5/12?
Please simplify in its simplest form

Answers

   2/9 ÷ 5/12
= 2/9 × 12/5            Reciprocal of 5/12
= 2×12 / 9×5           Multiply num. by num. and denom. by denom.
= 24 / 45                 Find LCD
= 24 ÷ 3 / 45 ÷ 3     Divide num. and denom. by LCD to simplify.
= 8 / 15

Therefore the answer is 8/15

2/9 divided by 5/12 simplifies to 2/15

Here we have to divide,

2/9 divided by 5/12

To divide fractions,

We have to flip the second fraction and multiply it by the first fraction. This gives us,

⇒ (2/9) ÷ (5/12) = (2/9) x (12/5)

We can simplify this expression by canceling out any common factors between the numerators and denominators.

In this case,

2 and 12 have a common factor of 2, while 9 and 5 don't have any common factors. This gives us,

⇒ (2/9) x (12/5) = 24/45

To express this fraction in its simplest form,

we can divide both the numerator and denominator by their greatest common factor, which in this case is 3.

This gives us,

6/45 = (24 ÷ 3) / (45 ÷ 3)

        = 8/15

Therefore, 2/9 divided by 5/12 simplifies to 8/15.

To learn more about the fraction visit:

https://brainly.com/question/5454147

#SPJ6

Subtract the fractions and simplify the answer 13/15 -2 2/3

Answers

2 2/3 = 8/3

8/3= 40/15

13/15 - 40/15 = -27/15 =  -1 12/15

The profit on the sale of a small bag of popcorn is $1, while the profit on the sale of a medium bag of popcorn is $2. The Glee Club expects to sell fewer than 100 total bags of popcorn, but they hope to make more than $100 in profit. The system that represents this is s+m<100 and s+2m>100. The graph of the boundary lines is shown below. Which regions should be shaded (to form the solution)?

Answers

Assume the graph is drawn with m as the x-axis, and s as the y-axis.  If it is drawn the other way, it would be just a reflection about the x=y line.
There are two unspecified but implicit conditions, namelym>=0 and s>=0, which correspond to the m- and s-axes (horiz. & vert.) when equality holds in either case.
s+m<100 is a solid line at 45 degrees intersecting the m- and s-axes at (0,100), and (100,0) respectively.
s+2m>100 is a solid line with slope -2 intersecting the axes at (0,50) and (100,0).
The feasible region (shaded) is between the two lines, but above the horizontal axis.
If the graph is drawn the other way, the feasible region is between the two lines, and to the right of the vertical axis.
If we let s be the y axis, and m be the x axis.

s+m<100

s<100-m  (0<m<100)

...

s+2m>100

s>100-2m  (0<m<100)

....

Taken together we have:

100-2m<s<100-m

And 0<s<100

So you would end up with a region bounded by s=100-2m on the left,  s=100-m on the right, (the lines themselves are not part of the solution set) a vertical line m=1 and a horizontal line s=1.  Hopefully you can visualize that from your answer choices. :)

And as the other poster pointed out, if the axis are reversed you will of course have this area rotated about the 45° line y=x.

A factory used 396.25 pounds of tomatoes to make 6.25 batches of salsa. How many pounds of tomatoes were used in each batch?

Answers

63.4 pounds of tomatoes were used in each batch. You have to find the unit rate. Divide 396.25 by 6.25, and you get 63.4. 
hope this helps:)
please mark thanks and brainliest! :)

Answer:

63.4 pounds of tomatoes were used in each batch

Step-by-step explanation:

A factory used 396.25 pounds of tomatoes to make 6.25 batches of salsa.

Or, In 6.25 batches of salsa 396.25 pounds of tomatoes were used.

In 1 batch of salsa , [tex]\dfrac{396.25}{6.25}[/tex] pounds of tomatoes will be used.

i.e. In 1 batch of salsa , 63.4 pounds of tomatoes will be used.

Hence, 63.4 pounds of tomatoes were used in each batch

Between what pair of numbers is the product of 289 and 7?

Answers

Because 289 is between 200 and 300, the product of 289 and 7 is between 200 x 7 and 300 x 7.

Therefore, the product of 289 and 7 is between 1,400 and 2,100.

Your running speed is 8.5 miles per hour. A greyhound dog's speed is about 4.5 times faster than yours. What is the dog's speed?

Answers

The dog's speed is 38.95 miles per hour. Its easy! Just multiply 8.5 by 4.5 You get 38.25.
The dogs speed is about 38.25 miles per hour. Multiply your speed times the dogs about speed and you get 38.25

You want to buy an item that costs $100. Which is the most cost-effective choice for buying the item?

Answers

well if you have 100$ you would want to buy something a little under 100 because if you bought something that was exactly 100$ you would need more money because of tax. So it would be best if you buy something that is 95$ instead of something that is exactly 100$!!

Compare prices, consider discounts, and watch for additional costs like shipping. Choose the option with the lowest total expense for buying the $100 item.

To determine the most cost-effective choice for buying the $100 item, you should consider any available discounts, promotions, or deals offered by different sellers or platforms. Here are a few strategies you could consider:

1. **Comparison Shopping**: Check multiple retailers or online platforms to see if the item is available at a lower price elsewhere. Websites and apps dedicated to comparison shopping can help streamline this process.

2. **Discounts and Coupons**: Look for any available discounts or coupons that you can apply to your purchase. Many retailers offer promotional codes or special deals that can help reduce the cost of the item.

3. **Cashback and Rewards**: Some credit cards or loyalty programs offer cashback or rewards points for purchases. If you have a card or program like this, see if you can earn rewards or cashback by buying the item through a specific retailer.

4. **Timing**: Consider timing your purchase to coincide with sales events or promotions, such as Black Friday, Cyber Monday, or seasonal sales. Buying during these periods can often result in significant savings.

5. **Shipping and Handling Costs**: Be mindful of any additional costs associated with shipping and handling. Sometimes, even if the base price of the item seems lower from one seller, the shipping costs may make the overall purchase more expensive.

By comparing prices, looking for discounts, and considering additional costs, you can find the most cost-effective option for purchasing the $100 item.

Complete Question:

Which of these is the most cost effective choice for buying the item using a paid membership card to buy it at a 10 percent discount buying it on line at a 10 percent discount without sales tax?

The width of a vegetable garden is 3 times it's length.If the length of the garden is 4 1/2 feet,what is the width in simplest form?

Answers

13 1/2 or 27/2 depends on what your teacher wants. hope this is helpful

(sum of 50 different whole numbers, each less than 51)-(sum of 45 different whole numbers, each less than 51)is at most
A:10
B:15
C:240
D:285

Answers

The whole numbers less than 51 are {0, 1, 2, ...50}, which makes 51 of them.

The sum of the first 50 consecutive positive integers, 1+2+3+4+...+50 is given by the Gauss formula for addition:

[tex] \frac{50*51}{2}=25*51= 1275[/tex]

To maximize "(sum of 50 different whole numbers, each less than 51)-(sum of 45 different whole numbers, each less than 51)":

we need to maximize the first part, and minimize what we are subtracting.

That is:

we need to maximize "sum of 50 different whole numbers, each less than 51" which is done by subtracting the smallest one, that is 0, from 1275

and minimize "sum of 45 different whole numbers, each less than 51"
which is done by subtracting the greatest 6 numbers from 1275, that is:

1275-50-49-48-47-46-45=990

Thus, the difference is at most: 1275-990=285

Remark: we need to subtract 6 numbers because there are in total 51, and we are adding the smallest 45 of them.


Answer: D: 285

A scatter plot is made with the data shown below: Number of Bakers at a Cake Shop 5 6 7 8 9 10 11 12 13 Number of Cakes Baked 7 7 8 8 9 11 13 14 14 What type of association will the scatter plot for these data represent between the number of bakers at the cake shop and the number of cakes baked? No association Positive linear association Negative linear association Positive nonlinear association

Answers

I think the correct answer would be the second option. Given the data above, the type of association that the scatter plot would show would be a positive linear association. It is best if you plot these points so you will see that there is an almost linear relation of the points. By doing linear regression, you can validate that the correlation of the data points would be linear. A positive linear association would mean that it changes linearly from the left increasing to the right. So, most likely, the graph would be sloping up to the right and it can be observed for the given data above.

Answer:

positive linear association

hope this helps

In your own words explain the place value relationship when the same two digits are next to each other in a multi digit number

Answers

In a place value relationships. The relationship between 2 the same digit place next to each other is the value of the number to left is 10 times bigger than to the value to the left and from the decimal point to the right is 10 times smaller of value than the digit in their right.

Let say for example:
1111
1 thousands, 1 hundreds, 1 tens, and 1 ones.
Let’s start from 1 = 1 x 10 = 10
That would be 10 X 10 = 100
then 100 X 10 = 1000

Notice that their value increase base on its place value if we multiply the given number by 10. 

Another one is

912.98 in where 9 is hundreds, 1 is tens, 2 is ones and after the decimal points, in where  9 is tenths and 8 is hundredths.

Notice each place value next to each other. Each value is ten times in difference.

I NEED THIS DONE, PLEASE HELP...
Fill in the blank:
To prove that the medians of an isosceles triangle meet at a point, show that the ____ of a side lies on the line containing the opposite _____ and the point where the other two ____ intersect

Answers

Might be:

*midpoint* of a side

opposite *vertex*

*medians* intersect


If three lines meet at a single point, we say that the lines are concurrent.

Note that median is a line joining one vertex of a triangle with the midpoint of its opposite side.

Draw two medians for the given isosceles triangle.

Now, join the point of intersection of these medians and the third vertex.

If we prove the midpoint of the opposite side lies on this line, then it will be proved that the medians of the given isosceles triangle meet at a point.

Hence, here is the correct statement with blanks filled.

The midpoint of a side lies on the line containing the opposite vertex and the point where the other two medians intersect.

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