the length of a rectangle is twice its width. the perimeter of the rectangle is 42cm. what is the length and width for the rectangle?

Answers

Answer 1

Answer:

length = 14cm width = 7cm

Step-by-step explanation:

length = 2x w (width)

if length = 2x width then

length must equal 4/6 and width must equal 2/6 because length is 2 times width.

42 divded by 6 = 7.

length gets four lots of 7.

length of both sides= 28cm

width gets 2 lots of 7.

width of both sides= 14cm

there are two sides for length and two sides for width.

Length x 2= 28cm

Length must equal 14cm.

Width x 2 = 14cm

Width must equal 7cm.

lets just prove this is true:

7+7=14.

14+ (14+14) =

14+ 28= 42cm.

this works.

the length is 14cm and the width is 7cm.

Answer 2

Answer:

Length = 14 cm

  width = 7 cm

Step-by-step explanation:

given:

rectangle

where    L = 2W

             W = W

Perimeter = 42 cm

find: Length of L

solution:

Perimeter or a rectangle = 2L + 2W

plugin the given values into the formula:

42 = 2(2W) + 2W

42 = 4W +2W

42 = 6W

W = 42/6

W = 7 cm (width of Rectangle)

solve L by using  substituting W=7 in L = 2W

L = 2W

L = 2 (7)

L = 14 cm

therefore, the Length = 14 cm

                          width = 7 cm


Related Questions

ABC is a triangle in which B = 90°. In each of
these, i draw and label a sketch, ii then calculate
b
the length of the third side of the triangle.
AB = 6 m, BC = 8 m

Answers

Step-by-step explanation:

You have to use pythagoras' theorem for this.

So AC is the length you want to find.

Pythagoras' theorem is a^2+b^2=c^2

In your triangle, AB=a, BC=b and AC=c

6^2+8^2=Ac^2

36+64= AC^2

100=AC^2

Square root both sides

10=AC

Therefore AC=10m

The sum of one-third a number and twenty-five is as much as twice the number

Answers

Answer:

75/7 = 105/7 (ten whole number, five over seven)

Step-by-step explanation:

1/3n + 25 = 2n

n is the number

n/3 + 25/1 = 2n

n + 75/3 = 2n

cross multiply

n + 75 = 6n

75 = 7n

n = 75/7

n = ten whole number, five over seven (105/7)

Evaluate the expression x = 4.
3x + 2

Answers

Answer:

14

Step-by-step explanation:

3(4)+2

12+2

14

what is 2/3/10 and 4/5/10? im so confused!

Answers

Answer:

the ten is the year and the middle number is the day and the 1st number is the   month

Step-by-step explanation:I'm in the 9th grade so we have to do this many times TwT

-8(4+4n)=8(n+6) steps so it can help me​

Answers

Answer:

-32n-32=8n+48

-8             -8

 -40n-32=48

      +32   +32

-40=80

-40/-40=80/-40

n=-2

Scientific notation of 10.34

Answers

Here is the answer that Siri gave me
1.034x 10 to the 1st power

a chocolate chip cookie recipe uses 2 cups of sugar to make 24 cookies. how much sugar would you need to make 100 cookies? (round to nearest hundredth)

Answers

Answer:

8.33

Step-by-step explanation:

what is the midpoints of a segment with the given endpoints. (3,4) and (-2,9)​

Answers

Answer:

The answer is

[tex]( \frac{1}{2} \: , \: \frac{13}{2} )[/tex]

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

[tex]M = ( \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2} )[/tex]

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(3,4) and (-2,9)

The midpoint is

[tex]M = ( \frac{3 - 2}{2} , \: \frac{4 + 9}{2} )[/tex]

We have the final answer as

[tex]( \frac{1}{2} \: , \: \frac{13}{2} )[/tex]

Hope this helps you

help me pls i need this

Answers

Answer:

96 cm²

Step-by-step explanation:

The lateral surface area (A) is the sum of the areas of the 4 slant faces.

The faces are triangular with area [tex]\frac{1}{2}[/tex] bh , thus

A = 4 × [tex]\frac{1}{2}[/tex] × 8 × 6 = 2 × 48 = 96 cm²

Priya drew a triangle with the side lengths 3, 4, 5. She wants to draw a triangle that is a SMALLER scaled copy. Which of the following are scale factors she could use to make the triangle smaller?

Answers

Answer:

She could  make the triangle smaller by making the same triangle but smaller and add the same sides to the small triangle.

scale factors she could use to make the triangle smaller is [tex]\frac{1}{2}[/tex]

Given :

Priya drew a triangle with the side lengths 3, 4, 5

Given options are :

1.) 1/2

2.) 1

3.) 2

4.) 6

Explanation :

The ratio of the measurement of the corresponding sides of a triangle is a scale factor .

When we multiply the side length by a scale factor >1 that gives a bigger scaled copy

When we multiply the side length by a scale factor <1 that gives a smaller scaled copy

From the given options , scale factor 1/2 is less than 1

So 1/2 is the scale factor that could use to make the triangle smaller

Learn more :

brainly.com/question/17819925

Determine which is the more precise measurement in each pair. 4lb;4.3lb

Answers

Answer:

4.3lb

Step-by-step explanation:

4.3lb is more precise out of the answer choices of 4lb and 4.3lb because 4.3lb is an exact weight whereas 4lb could be rounded.

In the previous problem, Ken predicted a drop in
temperature. Explain why a drop in temperature would
lead to adding a negative integer.

Answers

Answer:

Because  a drop in temperature means decrease in temperature therefore, we take an integer  with negative sign and added to previous temperature.

Step-by-step explanation:

Drop in temperature means decrease in the temperature .When the temperature decreases then we take decrease value of temperature in negative integer. Because decrease means the temperature fall  down  .Hence , the  decrease in temperature measure with negative sign .

For example,  if we take temperature T= 70°C.

If the temperature decreases by 5°c  then the temperature

Decrease in temperature=-5°C

Hence, the temperature T= 70+(-5)=65°C.

Therefore , from example we can say that when temperature decreases by some value in integer . Then ,we get final  temperature obtained  by adding  drop in temperature ( negative integer  ) in previous value of the temperature.

Answer: Sample reasopnse

A drop in temperature means the temperature will decrease. That decrease is represented by a negative integer, which should be added to the previous temperature.

Step-by-step explanation:

Type your answer into the box.
Sarah's gross income last month was £1260.
She pays 20% tax on her gross income.
How much tax did Sarah pay last month?
ایا

Answers

Answer: 252

Step-by-step explanation:

The amount of tax paid by Sarah last month is £252.

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 Sarah's gross income last month was £1260. She pays 20% tax on her gross income.

The tax amount is calculated by taking 20% of the gross income £1260.

Tax amount = 20% of £1260.

Tax amount = £1260 x 20 /100

Tax amount = £1260 / 5

Tax amount =£252.

Therefore, the amount of tax paid by Sarah last month is £252.

To know more about percentages follow

https://brainly.com/question/24304697

#SPJ2

A school choir needs to make T-shirts for its 75 members and has set aside some money in their budget to pay for them. The members of the choir decided to order from a printing company that charges $3 per shirt, plus a $50 fee for each color to be printed on the shirts. Select all the equations that could represent the relationship between the number of T-shirts ordered, the number of colors on the shirts(x), and the total cost of the order(y).

Answers

Answer:

y= 50x+ 225   \

Step-by-step explanation:

Given that

the number of colors on the shirts(x), and

the total cost of the order(y).

since the number of colors is given as x

the total cost y can be represented as

y= 50x+ 75(3)

y= 50x+ 225

hence the total cost of 75 T-shirts is given by the model

y= 50x+ 225  

There is 240 mg of sodium for 36 crackers. How much sodium for 15 crackers.

Answers

100. You would divide the original amount of crackers by 240, then multiply by the new amount of crackers.

is {(3,4),(3,5),(4,4), (4,5)} a function

Answers

Answer:

No, it's not a function.

Step-by-step explanation:

This is not a function because the x-inputs repeat. It would be a function if each x-input was a different number, but the inputs 3 and 4 repeat twice. Therefore, this is not a function.

Answer:

This is NOT a function because you CANNOT have same x values twice.

Step-by-step explanation:

Hope this helps! Have a good day :)

Find the midpoint of a segment with the given endpoints.
W(-1, 1), 0(5, -5) =

Answers

Answer:

(2,-2)

Step-by-step explanation:

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

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

A popular drive-in food stand advertises that it can provide 1,063,953 fountain drink and slush
combinations. Approximately how many drinks per minute would you have to order to sample all
possible beverages in one year?

Answers

There is 525600 minutes in a year and 1063953 drinks, so 525600 and 1063953 divided is about 3

i need to find the area .

Answers

Answer:

105.12 ft^2

Step-by-step explanation:

Area of rectangle = 8 × 10 = 80 ft^2

Area of semicircle = 1/2π × 4^2

4 is the radius of the semicircle.

Since we use 3.14 to approximate π...

Area of semicircle = 1/2× 3.14 × 4^2 = 25.12

∴Total area = 25.12 + 80 = 105.12 ft^2

Answer: 105.12ft²

Step-by-step explanation: first we need to find the area of the rectangle with the formula: length × width so, 8ft × 10ft = 80 ft².

Now we can find the area of the semicircle with the formula: πr²÷ 2 so, (3.14 × 4²) ÷ 2 = 25.12ft². Now we need to calculate the area of the whole shape and we can do this by adding together our rectangle and semicircle so, 80ft + 25.12ft = 105.12ft².



Simplify (3x – 5) + (5x + 1)

Answers

Answer:

8x-4

Step-by-step explanation:

(3x-5)+(5x+1)

=3x-5+5x+1

=8x-4

A circle's radius is 8 centimeters.
What is the circle's circumference (use 3.14 for pi and round to nearest
tenth)?

Answers

Answer:

The answer would be 50.2

Step-by-step explanation:

The answer is 50.27 but rounded the answer is 50.3

Guys I need your help
What are each of the steps on solving 5x-2+ 3x=14. There are four steps and the choices are combine like terms, addition, subtraction, division, and distribution.

Answers

Answer:

5x - 2 = 3x = 14

8x -2 = 14

8x = 14 + 2

8x = 16

x = 2

Step-by-step explanation:

Answer:

add 5x and 3x then add -2 to 14. it should be 8x=12 then divide 8x and 12 by 8 and its 12/8 or simplify to 6/4 or 1 1/2 so combine like terms then addition then division i think :)

Step-by-step explanation:

Think of the 3 different ways you can violate netqieutte in social media, emails, or texting. In other words, give 3 things you should never do online. List the 3 violations using complete sentences. Give a basic example of each violation. What can you do improve your netiqutte? math teacher asked

Answers

Answer:

Foul language, Cyber bullying, send innapropriate photos.

The way I cam improve my ettiquite  by practicing these things.,

Step-by-step explanation:

Write 0.36 as a fraction in simplest form.

Answers

Answer:9/25

Step-by-step explanation:

Because .36=36/100. Then, divide by four for numerator and denominator

Answer:

9/25

Step-by-step explanation:

0.36 = 9

25

as a fraction

To convert the decimal 0.36 to a fraction, just follow these steps:

Step 1: Write down the number as a fraction of one:

0.36 = 0.36

1

Step 2: Multiply both top and bottom by 10 for every number after the decimal point:

As we have 2 numbers after the decimal point, we multiply both numerator and denominator by 100. So,

0.36

1

= (0.36 × 100)

(1 × 100)

= 36

100

.

Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(36,100) = 4. So,

(36÷4)/(100÷4)

= 9

25

when reduced to the simplest form.

is 2.64 greater or less than 1.9?

Answers

2.64 is greater than 1.9



Write a numerical expression for each verbal expression

1.The sum of four and nine times three

2.eighteen divided by the sum of two and seven

3. Ten divided by the product of four and five

4. The Difference of eleven and four times five

5. The sum of one and two divided by twenty

6. The sum of two and four and six times eight

7. The sum of twelve and sixteen divided by the sum of three and four

8. The difference of twenty-two and six divided by the sum of five and three

Answers

1. The sum of four and nine times three

                       (4 + 9)×3

2. eighteen divided by the sum of two and seven  

                            [tex]\bold{\dfrac{18}{2+7}}[/tex]

or:  18÷(2+7),   or:  18/(2+7)

3. Ten divided by the product of four and five  

                            [tex]\bold{\dfrac{10}{4\times5}}[/tex]

or:  10÷(4×5), or:  10/(4×5)

4. The Difference of eleven and four times five  

                       (11 - 4)×5        

5. The sum of one and two divided by twenty

                              [tex]\bold{\dfrac{1+2}{20}}[/tex]

or:   (1+2)÷20,  or:   (1+2)/20

6. The sum of two and four and six times eight  

                        (2 + 4 + 6)×8  

7. The sum of twelve and sixteen divided by the sum of three and four

                               [tex]\bold{\dfrac{12+16}{3+4}}[/tex]  

or:   (12+16)÷(3+4),   or:   (12+16)/(3+4)

8. The difference of twenty-two and six divided by the sum of five and three

                              [tex]\bold{\dfrac{22-6}{5+3}}[/tex]

or:  (22 - 6)÷(5+3),  or:  (22 - 6)/(5+3)    

Answer:In the following activity, write an equation to represent each verbal statement, and use it to find the value of each unknown number. Then, put the solution values in order from smallest to largest. [Note: The smallest solution is "first", and the largest solution is "fifth".]

1. fourth

The sum of a number and two is equal to the quotient of six and negative four.

2. first

The sum of a number and three is divided by five. The result is negative two.

3. third

The difference between a number and five is multiplied by negative two. The resulting product equals fourteen.

4. second

Half of a number is added to four. This sum is equivalent to negative one.

5. fifth

The difference between four times a number and five has a result of negative eight.

Step-by-step explanation:

-g -24= -17
What is the answer ?

Answers

Answer:

g = -7

I hope this helps!

In Texas the closest temperature ever recorded is -23 F. that’s a lot chillier than in Florida, where the closest recorded temperature is -2 F. How many degrees is Florida’s closest recorded temperature than Texas ‘s?

Answers

Answer:-21 degrees

Step-by-step explanation:

-23-2 =-21 degrees

[tex]5\frac{5}{12} -2\frac{7}{8}[/tex]

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{2 \frac{13}{24}}}}}} [/tex]

Step-by-step explanation:

[tex] \sf{5 \frac{5}{12} - 2 \frac{7}{8} }[/tex]

Convert the mixed number into improper fraction

[tex] \longrightarrow \sf{ \frac{5 \times 12 + 5}{12} - \frac{8 \times 2 + 7}{8}} [/tex]

[tex] \longrightarrow{ \sf{ \frac{60 + 5}{12} - \frac{16 + 7}{8} }}[/tex]

[tex] \longrightarrow{ \sf{ \frac{65}{12} - \frac{23}{8}}} [/tex]

Take the L.C.M of 12 and 8

To find out the L.C.M , first of all find the prime factors of each numbers.

12 = 2 × 2 × 3

8 = 2 × 2 × 2

Take out the common prime factors : 2 and 2

Also, take out the remaining prime factors: 3 and 2

Multiply those all prime factors and obtain L.C.M

= 2 × 2 × 3 × 2 = 24

L.C.M. of 12 and 8 = 24

[tex] \longrightarrow{ \sf{ \frac{65 \times 2 - 23 \times 3}{24} }}[/tex]

[tex] \longrightarrow{ \sf{ \frac{130 - 69}{24}}} [/tex]

[tex] \longrightarrow{ \sf{ \frac{61}{24}}} [/tex]

Convert the improper fraction into mixed number

[tex] \longrightarrow{ \sf{2 \frac{13}{24}}} [/tex]

Hope I helped!

Best regards! :D

Answer:

Convert the mixed numbers to improper fractions, then find the LCD and combine.

Exact Form:

61/24

Decimal Form:

2.5416

Mixed Number Form:

2 13/24

Step-by-step explanation:

Determine whether this graph is a function

Answers

Step-by-step explanation:

A function is such that every element in the domain has only 1 image in the range. The domain here are the x-values while the range is the y-values.

However a vertical line can cross the graph more than once. Hence the graph is not a function.

Other Questions
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