Find the value of: I need help)

Answer:

Dimensions are:

Length = 4 ; width = 10

or

Length = 10 ; width = 4

Step-by-step explanation:

let the length = L

let the width = W

we are given the following:

area of rectangle = L × W = 40 m² - - - - - - ( 1 )

perimeter of a rectangle = 2L + 2W = 28 m - - - - - ( 2 )

from equation (2)

2L + 2W = 28

2L = 28 - 2W

dividing both sides by 2

(2L = 28 - 2W) ÷ 2

L = 14 - W  - - - - - - (3)

Next, let us replace the value of L in equation 1 with equation 3

L × W = 40 - - - - (1)

where L = 14 - W

(14 - W) × W = 40

14W - W²  = 40

0 = W² - 14W + 40

solving the quadratic equation

using completing the squares method

W² - 14W + 40

W² [-4W - 10W] + 40 =  0

(W² - 4W) - (10W + 40) = 0

W(W - 4) - 10(W - 4) = 0

W - 10 = 0; ∴ W = 10

or

W - 4 = 0 ;  ∴ W = 4

putting the values of W into equation (3)

L = 14 - W

where W = 10 or 4

L = 14 - 10 = 4

or L = 14 - 4 = 10

∴ Dimensions are:

Length = 4 ; width = 10

or

Length = 10 ; width = 4

Answer:

15389.14

Step-by-step explanation:

You may need to round

4901 without pi

Answer:

less then

Step-by-step explanation: 4/5=80%

Answer:

less then is the answer of this question

Answer:

The answer is 11

Step-by-step explanation:

2 (5) + 1

10 + 1

11

Answer:

A

Step-by-step explanation:

To find the perpendicular line you need to find the negative reciprocal of 4/7x which is -7/4x, so A is the correct answer

I hope this helps!!

Answer:

-90

Step-by-step explanation:

10 - 10 x 10  

10 x -10 = -100   (always do multiplication first)

-100 + 10 = -90

Answer: The answer to this basic math question with a basic given math expression is -90.

Step-by-step explanation: Mmmm, that was super extremely easy, so anyways, here are 3 basic steps in order to evaluate the given basic math expression:

Step 1. First, let's input the original basic equation that looks in the basic equation form like this: [tex]10 - 10 * 10.[/tex]

Step 2. After we input the original basic equation, next, let's do the multiplication first by multiplying 10 by 10 that looks in the basic equation form like this: [tex]10 - 100.[/tex]

Step 3. Last but not least is after we multiply 10 by 10 first, finally, let's subtract 10 and 100, and therefore your answer to this basic math question with the given basic math expression is -90.

I hope that my full given answer with my full given step-by-step explanation is very helpful to your own basic math question with the given basic math expression, please take care, always be safe, and have a great rest of the holiday winter break, Merry Christmas and a happy new year! :D

Sincerely,

Jason Ta,

The Ambitious of The Brainly And The Role of The TDSB And WHCI Student of The High School.

Answer:

1/4 of 2 hours

Step-by-step explanation:

30 min + 30 min = 1 hour. 1 hour is one half of two hours. Therefore, 30 minutes is 1/4 of 2 hours

Answer:

sum of exterior angles of a polygon = 360°

therefore,

x + 5 + x + 10 + 3x - 8 + 5x + 10 = 360°

10x + 17 = 360°

x + 17 = 360 ÷ 10 = 36

x = 36 - 17 = 19

x = 19

value of x will be 20

Answer:

7        −  9  y  

Step-by-step explanation:

   (  7    −  9 )

7   z   −  9    

Answer:

Yeah Newton is the unit of force.

Answer:

19

Step-by-step explanation:

if you do the checker method then you would find that

they add up to make a line which equals 180

so... the equation is (8x-7)+(x+16)=180

do the math and x=19

Answer:

A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group. For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females

Answer:

How can you determine a representative sample of a population? A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group. For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females

Step-by-step explanation:

Answer:

A. [tex]\frac{1}{x}[/tex]

Step-by-step explanation:

x = 100

A. [tex]\frac{1}{100} = 0.01[/tex]

B. [tex]\frac{10}{100}[/tex] = 0.10

C. 1 - 100 = -99

D. 10 - 100 = -90

Answer:

Answer:

2.215=2 43/200

Step-by-step explanation:

Showing the work

Rewrite the decimal number as a fraction with 1 in the denominator

2.215=2.215/1

Multiply to remove 3 decimal places. Here, you multiply top and bottom by 103 = 1000

2.215/1×1000/1000=2215/1000

Find the Greatest Common Factor (GCF) of 2215 and 1000, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 5,

2215÷5/1000÷5=443/200

Simplify the improper fraction,

=2 43/200

In conclusion,

2.215=2 43/200

Answer:

[tex]\frac{731}{330}[/tex]

Step-by-step explanation:

We require 2 equations with the repeating numbers placed after the decimal point.

let x = 2.2151515... ( multiply both sides by 10 and 1000 )

10x = 22.1515.... → (1)

1000x = 2215.1515.... → (2)

Subtract (1) from (2) thus eliminating the repeating decimal

990x = 2193 ( divide both sides by 990 )

x = [tex]\frac{2193}{990}[/tex] = [tex]\frac{731}{330}[/tex]

Thus

2.2151515..... = [tex]\frac{731}{330}[/tex]

Answer:

I am not that good at math either

11.71 + 2.8 = 14.51

That should be the answer, hopefully that helped.

Step-by-step explanation:

Answer: 1/12 of the box

Step-by-step explanation:

On Monday the dog ate 3/12 of the treats in the box and on Tuesday ate 2/12 of the treats in the box.

The answer to this question is the difference between both these fractions:

= 3/12 - 2/12

= 1/12 of the box

Answer:

Let's define the variable x as the number of apples in each bag.

We know that she bought 4 bags, then the total number of apples that she has is:

Apples = 4*x

Now she eats one apple for each bag, then she eats 4 apples, so she now has:

Apples = 4*x - 4

And we know that this is equal to 28, then:

4*x - 4 = 28

now we can solve this for x.

4*x = 28 + 4 = 32

x = 32/4 = 8

x = 8

There are 8 apples in each bag.

For the diagram part, by a small online search y found the image that you can see below.

The diagram that correctly represents this situation is diagram C, where x represents the number of apples in each bag.

Answer:

The answer would be the second one is a function.

Step-by-step explanation:

Answer:

to find the sons shadow you would simply multiply the length of his body by 2, therefore his shadow would be 2 meters long

The height of shadow is 2 meter long.

We have,

The father is 2 meters tall and casts a shadow 4 meters long.

let the length of shadow be x.

Using proportion

2/4 = 1/ x

2x = 4

x =4 /2

x = 2 meter

Thus, the height is 2 meter tall.

Learn more about Proportion here:

https://brainly.com/question/29774220

#SPJ2

Answer:

The answer to number 2 is X = 7

Step-by-step explanation:

9 = 2 +

9 = + 2

Subtract  2  from both sides of the equation  

= 7

Answer:

2. =7

3. 9 - 7 = 2

Step-by-step explanation:

Answer:

2min 33s i think

Step-by-step explanation:

i searched it lol

Answer:

the average time gap between the 1st and the 2nd is 46 seconds

the average time gap between the 2nd and the 3rd is 60 seconds

the average time gap between the 3rd and the 4th is 31 seconds

the average time gap between the 4th and the 5th is 91 seconds

Step-by-step explanation:

so the average is 69.25 seconds

Answer:

B: g(x) = RootIndex 3 StartRoot x minus 3 EndRoot + 4

Step-by-step explanation:

Got it right on Edge. Hope it helps!

Answer:

it is b on ed 2021

Step-by-step explanation:

Answer:

12 to 6

12:6

Step-by-step explanation:

Answer:

I believe 123

Step-by-step explanation:

123 since the figures are equal and C and Y are in the same position

Answer:

Step-by-step explanation:

a) 3n+3n+3=141, 6n+3=141

b) 6n+3=141, 6n=138, n=23

c) 3n and 3n+3, 3(23) and 3(23)+3, 69 and 72

Answer:

x + 110 + 47 = 180

x = 180 - 157

x = 23

Answer:

1. The y-intercept 8 means you start off with $8. The slope 1/4 means how much money you have to pay for the amount of tickets purchased for carnival games.

2. The y-intercept 2 means the number of chapters you started reading and the slope 5/4 means the number of chapters you read per day.

3. The y-intercept 3 means the inital (start) cost of a muffin delivery and the slope 2 means the cost of each muffin delivery for the number of muffins you ordered.

Number 3 on the slope part might be the other way around if I'm wrong :)

Answer:

1

Step-by-step explanation:

All you got to do is plug in 2 for x

3x-5, x=2

3(2)-5=

6-5= 1

Therefore the answer is 1.