1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alina1380 [7]
3 years ago
10

A rectangle's width is twice as long as its length. If the perimeter is 36 in., what is the length?

Mathematics
1 answer:
Bumek [7]3 years ago
6 0
Okay here: 

Let L be the length and W the width of the rectangle. 

1. w=2•L
2. 2L+2W=36

Substitute eq. 1 into eq. 2, 

2L+2•(2•L)=36

2L+4L=36

6L=36

L=9

Not done yet, then from eq. 1, 
 
W=2•L
W=2•9
W=18 <------- Your answer. :)
You might be interested in
Decompose 3/8 as the sum of unit fractions
bearhunter [10]
Unit fractions are fractions with a 1 as the numerator(number on top)
so 3/8 equals 1/8+1/8+1/8
8 0
3 years ago
Solve the equation for the variable.<br><br> 15.25 – 3.8x = -26.75 +2.2x<br> x = [?]
nirvana33 [79]
X=-2.3

I hope this is helpful! Let me know if you need anymore help!
4 0
2 years ago
A right triangle has legs that are 11 inches and 13 inches long.What is the area of the triangle?
Citrus2011 [14]
Just use your right angled triangle formula.

A=\frac{ab}{2}

Plug n chug 

A=\frac{11*13}{2}
A=71.5 in^{2}
5 0
2 years ago
Greg’s sister Ava is 4 years older than him. If the sum of Greg’s age and 2 times Ava’s age is 35, How old is Ava?
Fofino [41]

Answer:

13

Step-by-step explanation:

Create an equation: g+(G+4)(2)=35

Parentheses: g+2(G+4)=35

Distributive property: g+2g+8=35

Combine like terms: 3g+8=35

Subtractive property: 3g=27

Division property: g=9

Greg is 9. Since Ava is 4 years older you add 4 to find her age. Ava is 13. You take Ava’s age times 2 ( equals 26) then add Greg’s age (equals 35). And it should equal 35.

3 0
2 years ago
Help find the value of x pls. No links! Y
Citrus2011 [14]

=>7x+9=9x+5

=>7x+9-9=9x+5-9

=>7x=9x-4

=>7x-9x=9x-4-9x

=>-2x=-4

=>x=2

=>7x+9=7×2+9=23

=>9x+5=9×2+5=23

4 0
3 years ago
Other questions:
  • I need help with one more of these.
    12·2 answers
  • Which is the equation of a line with a slope of -1 and a y-intercept of -6?
    14·1 answer
  • Which expression is equivalent to 30x + 15y?<br> a)45xy<br> b)xy+45<br> c)15(2x+y)<br> d)15xy(2x+y)
    11·2 answers
  • Which ratio is equal to 27 : 81?
    15·2 answers
  • What is 14.235 Rounded to the nearest tenth ​
    12·2 answers
  • A class is made up 15 girls and 12 boys. If a group is made up 3 girls and 3 boys, then how many groups can be created?
    15·2 answers
  • Give your answer in simplest form .<br> 4/5 x 19 =
    14·2 answers
  • Whats the answer for this...?<br> Ive tried 6 times in total, i just gave up :l
    15·1 answer
  • Help ASAP and answer correct pleaseeee!!!!! FASTTT
    7·2 answers
  • 3.75<br>divided by 25<br>round off to the nearest rand​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!