The length of a rectangle is 8 centimetres less than its width. What are the dimensions of the rectangle if its area is 240 square​ centimetres?

Answers

Answer 1

Answer:

Well, Your best answer will be is 35.

Here's a Explain.

W-5=0

W=5 That's for the width.

L=3*5-8

L=15-8=7 And, That's for the length.

Here's proof.

35=7*5

35=35

Hope That Helps!~

[tex]^{Itsbrazts}[/tex]


Related Questions

Find the solutions of the quadratic equation 3x^2 + 9x + 17 = 0

Answers

The solutions of the quadratic equation 3x² + 9x + 17 = 0 are x₁ = (-9 + √(123)i) / 6 and x₂ = (-9 - √(123)i) / 6, where "i" represents the imaginary unit.

To find the solutions of the quadratic equation 3x² + 9x + 17 = 0, we'll use the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a.

Here, a = 3, b = 9, and c = 17. We'll plug these values into the formula and simplify the expression step-by-step.

Step 1: Calculate the discriminant (Δ) using the formula Δ = b² - 4ac.

Δ = (9)² - 4 * 3 * 17

Δ = 81 - 204

Δ = -123

Step 2: Substitute the values of a, b, and Δ into the quadratic formula.

x = (-9 ± √(-123)) / 2 * 3

Step 3: Since the discriminant (Δ) is negative, the quadratic equation has no real solutions. Instead, it has two complex solutions.

Step 4: Simplify the expression under the square root.

x = (-9 ± √(-123)) / 6

Step 5: Now, we deal with the square root of a negative number, which is denoted by "i" in the complex number system. √(-123) = √(123)i.

Step 6: Substitute the value of √(-123) back into the equation.

x = (-9 ± √(123)i) / 6

Step 7: Divide both the real and imaginary parts by 6 to get the two complex solutions.

x₁ = (-9 + √(123)i) / 6

x₂ = (-9 - √(123)i) / 6

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Final answer:

The quadratic equation 3x^2 + 9x + 17 = 0 has no real solutions because the discriminant is negative. The solutions are complex numbers and can be expressed as x = -3/2 ± √(123)/6 × i.

Explanation:

To find the solutions of the quadratic equation 3x^2 + 9x + 17 = 0, we will use the quadratic formula, which is x = (-b ± √(b^2 - 4ac)) / (2a) for a quadratic equation of the form ax^2 + bx + c = 0. In our case, a = 3, b = 9, and c = 17. Plugging these values into the formula gives:

x = (-(9) ± √((9)^2 - 4(3)(17))) / (2(3))

x = (-9 ± √(81 - 204)) / 6

x = (-9 ± √(-123)) / 6

Since the discriminant (the part under the square root, b^2 - 4ac) is negative, the equation has no real solutions. Instead, the solutions are complex numbers:

x = (-9 ± √(-123)i) / 6

The final solutions can be expressed as:

x = -3/2 ± √(123)/6 × i

NEED HELP AS AS SOON AS POSSIBLE

Answers

Answer:

c

Step-by-step explanation:

trust me

Answer:

it is the 3rd one

Step-by-step explanation:

I did this question

A skiing event has 13 participants for the slalom. The 5 participants with the fastest speeds will be listed, in the order of their speed, on the leader board. How
many different ways are there for the names to be listed?

Answers

There are 154,440 different ways for the names of the top 5 participants to be listed on the leaderboard.

To determine the number of ways the names can be listed for the top 5 participants on the leader board, you can use the concept of permutations. The formula for permutations is:

[tex]\[ P(n, r) = \frac{n!}{(n - r)!} \][/tex]

where [tex]\( n \)[/tex] is the total number of items and [tex]\( r \)[/tex] is the number of items to be selected.

In this case, you have 13 participants, and you want to select and order the top 5 participants. So, the formula becomes:

[tex]\[ P(13, 5) = \frac{13!}{(13 - 5)!} \][/tex]

Now, calculate the permutations:

[tex]\[ P(13, 5) = \frac{13!}{8!} \][/tex]

[tex]\[ P(13, 5) = \frac{13 \times 12 \times 11 \times 10 \times 9 \times 8!}{8!} \][/tex]

[tex]\[ P(13, 5) = 13 \times 12 \times 11 \times 10 \times 9 \][/tex]

Now, calculate the result:

[tex]\[ P(13, 5) = 154,440 \][/tex]

So, there are 154,440 different ways for the names of the top 5 participants to be listed on the leader board.

In the diagram below, DE and EF are tangent to O. What is the measure of DF?

Answers

The measure of the arc DF is 86 degrees if the measure of the major arc is 274 degrees option (D) is correct.

What is a circle?

It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)

We have:

In the diagram below, DE and EF are tangent to O.

Let x be the measure of arc DF.

The complete revolution around the center = 360 degree

Major arc + Minor arc = 360

274 + x = 360

x = 86 degrees

Thus, the measure of the arc DF is 86 degrees if the measure of the major arc is 274 degrees option (D) is correct.

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Answer:

86

Step-by-step explanation:

Just took the quiz

Need help ASAP please and thank you

Answers

Answer:

[tex]-3m^{12}{n^{6} }[/tex]

Step-by-step explanation:

To begin simplifying this, we can first divide the coefficients, giving us:

[tex]\frac{-3m^{5}n^{4} }{m^{-7} n^{-2} }[/tex]

We know that when dividing exponents, this means we need to subtract the exponent on the denominator from the numerator. This gives us:

[tex]\frac{-3m^{5+7} n^{4+2} }{1}[/tex]

Now, simplifying this gets:

[tex]-3m^{12}{n^{6} }[/tex]

Please help me on number 3, 4 and 5 Trigonometry! Please show your work

Answers

Answer:

15

Step-by-step explanation:

14^2 + 6^2 = H^2

196 + 36 = H^2

232 = H^2

*Square root both sides*

About 15 = H

Also: H means hypotheses

If you know the answer please help....

Answers

answer should be C as both have the same gradient

Answer: The 4 correct answers are A,C,D, and E.

Which side lengths form a right triangle?​

Answers

So the right answer is of option A.

Look at the attached picture

Hope it will help u...

Find the exact length for the third side

Answers

Answer:

12

Step-by-step explanation:

Pythagorean theorem

a²+b²=c²

a²+35²=37²

a²+1225=1369

manipulate the equation

1225-1369=-a²

-144=-a²

√-144=12

a=12

I need help with all three problms pls! I'll mark brainliest

Answers

Answer:

2. Denote two pieces: x, y

x + y = 40

x = 2y + 10

=> 2y + 10 + y = 40 => 3y = 30 => y = 10 => x = 2 x 10 + 10 = 30

=> Solution: 10 and 30

3. Denote 4 consecutive number: 2k, 2k+2, 2k+4, 2k+6

(2k + 2k + 4) x 2 + 20 = 2 x (2k + 6)

=> 8k + 28 = 4k + 12

=> 4k = -16

=> k = -4

=> Solution: -8, -6, -4, -2

4. The number of shoppers after announcement :

N = 320 x 150/100 = 480

Hope this helps!

:)

Keith is using photo software to enlarge a photograph that is 4 inches by 6 inches to 9 inches by 13.5 inches. What is the scale factor of the dilation?

Answers

Answer:

2.25

Step-by-step explanation:

The old width of 4 inches became a new width of 9 inches.

Old: 4 in.

New 9 in.

The old length of 6 inches became a new length of 13.5 inches.

Divide the new size by the corresponding old size.

9/4 = 2.25

13.5/6 = 2.25

You see in both cases, the scale factor is 2.25

The scale factor is 2.25

What is the surface area of the triangular prism?


2,001 square feet

2.376 square feet

2,592 square feet

4.320 square feet

Answers

Answer:

2.376 b

Step-by-step explanation:

Answer:

b. 2.376 square feet

Step-by-step explanation:

In the figure attached, the prism is shown.

Area of the bottom rectangle: 40*24 = 960 square feet

Area of the two side rectangles: 2*40*15 = 1200 square feet

Area of the two triangles: 2*24*9/2 = 216 square feet

Surface area of the triangular prism = 960 + 1200 + 216 = 2376 square feet

what is the surface area of the rocket?

Answers

Answer:

Thus, the surface area equals S(r)=πr2+2πrl+πr54r=πr2(1+54)+2πr(14r2−r4)=94πr2+28πr−π2r2=74πr2+28πr.Jul 15, 2016

Step-by-step explanation:

2.3 THINK: Florida Part 2
77
In 1840, the population of Florida was about 54,500. Between 1840 and 1860,
the population grew exponentially, increasing by about 60% each decade.
The number of decades can be calculated when estimating population.
1. How many decades are represented between 1840 and 1850?
2. How many decades are represented between 1840 and 1860?
Reply as 1-2

Answers

Answer:

1). 1 decade

2). 2 decades

Step-by-step explanation:

Number of years in decade = 10 years

1). When we are calculating the population of Florida between 1840 to 1850,

Number of years between 1850 and 1840 = 1850 - 1840

                                                                      = 10 years

So number of decades between 1840 and 1850 = [tex]\frac{10}{10}[/tex] = 1 decade

2). Number of years between 1840 and 1860 = 1860 - 1840

                                                                           = 20 years

Therefore, number of decades between this gap = [tex]\frac{20}{10}=2[/tex] decades

Can someone please answer!!! I’m on a time limit!!!

Answers

Answer:

2.8

Step-by-step explanation:

the formula of volume of cylinder is pi*r^2*h. if you plug in, you get (3.14)(r^2)(8.7). if you solve for r, you get 2.8!

Upon hitting a bat, a baseball has a change in momentum of 16.5 kg-ms. What is the average
force applied to the baseball the time of impact is 0.00200 seconds?

Answers

Answer:

The average force applied to the baseball is 8.25kN

Step-by-step explanation:

This problem bothers on the impulse of a force

We know that the change in momentum is expressed as

Ft= mv-mu

Given

Ft=16.5 kg-ms

Time t of impact =0.00200s

The force applied can be solved for

By making F subject of formula

F= (mv-mu)/t

F=16.5/0.002

F= 8250N

F= 8.25kN

Final answer:

The average force applied to the baseball is calculated to be 8250 Newtons, based on the given change in momentum of 16.5 kg-ms and the time of impact of 0.00200 seconds.

Explanation:

The student is asking how to calculate the average force applied to a baseball during collision with a bat, given that the baseball's change in momentum (impulse) is 16.5 kg-ms and the time of impact is 0.00200 seconds.

To find the average force (Favg), we can use the formula derived from Newton's second law, which relates force, change in momentum (impulse), and time:

Favg = \\Delta p / t

Where:

\\Delta p is the change in momentumt is the time during which the force is applied

Plugging in the values we have:

Favg = 16.5 kg-ms / 0.00200 s

Doing the calculation:

Favg = 8250 N

Therefore, the average force applied to the baseball is 8250 Newtons.

Question 2 of 10



2 Points



Based on the housing data below, use linear regression to estimate a fair



price for a 1700 ft2 home.



Square F



Feet



|



2156



2040



20



2050



House Price



in thousands)



210



200



A. $180,000



O B. $175,000



C. $156,000



oo -



D. $190,000



DUS

Answers

Answer:

C.   $176.000

Step-by-step explanation:

Final answer:

Linear regression requires sufficient data points for analysis, which are not provided, making it impossible to calculate an estimated price for a 1700 ft2 home without additional information.

Explanation:

To estimate a fair price for a 1700 ft2 home using linear regression, we would require more data points with corresponding house prices to create a regression model. Since we're not provided with sufficient data in the question, and there's no explicitly provided regression equation or coefficients, it's not possible to accurately calculate the estimated price for a home of a given square footage using linear regression. However, if we had such data, we would typically plot square footage on the x-axis and house price on the y-axis, calculate the slope and intercept coefficients of the regression line, and then use the regression equation y = mx + b (where y is the estimated house price, m is the slope, x is the square footage, and b is the y-intercept) to predict the price of the house with given square footage

The probability of rolling a 3 with a single six-sided die is 1/6. The probability of rolling
a 5 on a single six-sided die is 1/6. Thus the probability of rolling a 3 and then a 5 on
back to back rolls of a six-sided die is 1/6 x 1/6 = 36.

We can perform this calculation
because rolling a 3 and then a 5 are known as a ________ event?
Find the blank answer!

Answers

Answer:

3625

Step-by-step explanation:

Find the missing height of the cone. Volume= 118π ft3 Diameter= 2/3

Answers

Answer:

11 ft

Step-by-step explanation:

The equation for the volume of a cone is:

V = 1/3(3.14)r^2h

V = 414.48

r = 6

Plug in those values and solve for h:

414.48 = 1/3(3.14)(6)^2h

414.48 = 37.68h ; divide both sides by 37.68

11 = h

The missing height is 11ft.

A set of electric toothbrush prices are normally distributed with a mean of 87 8787 dollars and a standard deviation of 8 88 dollars. What proportion of electric toothbrush prices are between 104.60 104.60104, point, 60 dollars and 108.20 108.20108, point, 20 dollars?

Answers

Answer:

.0099

Step-by-step explanation:

right answer

The proportion of exam scores are between 82 and 89.2 points is 0.3330.

What is standard deviation?

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given:

mean = 87 points and

standard deviation = 8 points.

Now, using

Z= [tex]x- \mu / \sigma[/tex]

z= 104.6 - 87 / 8

z= 2.2

again, Z= [tex]x- \mu / \sigma[/tex]

z= 108.2- 87 / 8

z= 2.65

So, the proportion is

P(x<108.20)-P(x<104.60)

=P(Z<2.65)-P(Z<2.2)

= 0.9960-0.9861

=0.0099

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23/12
4
+63 rational or irrational?​

Answers

Answer:

irrational :)

Step-by-step explanation:

What is the measure of 2 В?
ОА. 75°
ОВ. 25°
Ос. 60
O D. Cannot be determined
Help!!!!

Answers

Answer:

с. 60

Step-by-step explanation:

This is an equilateral triangle since all the sides are the same.

That means all the angles are the same.

The sum of the angles is 180

There are 3 angles

180/3 = 60

Each angle is 60 degrees

Thee aansweer iis 60

The stained glass window below is a semicircle. What is the distance around the window to the nearest hundredth of an inch? Use 3.14 for π.

Answers

The distance around the window is 92.52 inches.

What is a semicircle?

A semicircle is a one-dimensional locus of points that forms half of a circle. It is a circular arc that measures 180°. It has only one line of symmetry.

Given that, The stained-glass window is semicircular and the bottom edge of the window is 36 in.

We get that, diameter of the window = 36 in

radius = 18 in

Circumference of semicircle = r(2+π)

= 18(2+3.14)

= 92.52 in

Hence, The distance around the window is 92.52 inches.

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PLZ HELP ME ON THIS!!! NEED ANSWERS ASAP

Answers

Answer:

-1

Step-by-step explanation:

real numbers stars from zero

eg. 01234567....

What is the distance between the points (4, 9) and ( 14, 11)? Rounded to the nearest tenth, if necessary

Answers

Answer:

10.4

Step-by-step explanation:

Nick has $5, $20, and $100 bills that total 17 bills. He exchanges all his $5 bills for $1 bills, then all his $20 bills for $5 bills, and finally all his $100 bills for $20 bills. At the end, Nick has a total of 77 bills. How many $20 bills did Nick have originally? Assume that each exchange preserves the total dollar amount of Nick’s money.

Answers

Answer:

8

Step-by-step explanation:

Key to this question is assume that each exchange preserves the total dollar amount of Nick’s money.

If He exchanges all his $5 bills for $1 bills, it means that a $5 bill will result in 5 $1 bills as such, if he had x number of $5 bill, after the exchange, he would have 5x $1 bills.

then all his $20 bills for $5 bills, it means that for each $20 bill, he gets 4 $5 bills which means that if he had y number of $5 bills, after the exchange, he would have 4y $5 bills.

and finally all his $100 bills for $20 bills, then he must have received 5 $20 bills for each $100 such that if he had z number of $100 bills before the exchange, he would have 5z number of $20 bills after the exchange. Given that originally he had 17 bills and later 77 bills then

x + y + z  = 17

5x + 4y + 5z = 77

Multiplying the first equation by 5,

5x + 5y + 5z = 85

5x + 4y + 5z = 77

subtract 2 from 1

y = 8

please answer all the questions

Answers

Answer:

Step-by-step explanation:

30-3024-30181-16248

Which line segment has the same measure as ST?
RX
TX
SR
XS

Answers

Answer:

SR

Step-by-step explanation:

Segment SR. XS creates a right angle in the in the triangle, splitting it in half. SR=ST

Two-fourths cup of water is how much in ounces?

Answers

Answer:

4 fluid ounces

Step-by-step explanation:

question is worded a little weird

Write the absolute value equations in the form
x−b
=c (where b is a number and c can be either number or an expression) that have the following solution sets:
a
Two solutions: x=2, x=14.

Answers

Answer:

|x - 8| = y + 6

Step-by-step explanation:

The vertex of the equation must be somewhere on the line x = 8, because it is the average of the answers.

If the slope of x is 1, then the vertex is (8, -6)

Plug that into the equation and you get  Ix - 8I = y + 6

Answer:

lx-8l=6

RSM said It was right

Step-by-step explanation:

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