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
salantis [7]
3 years ago
11

The length of a rectangular piece of land is 9 cm more than 3 times its width. The perimeter is 418 cm. Find its dimensions.

Mathematics
1 answer:
SashulF [63]3 years ago
3 0

Let w represent the width of the rectangle in cm. Then its length in cm is (3w+9). The perimeter is the sum of two lengths and two widths, so is ...

... 418 = 2(w + (3w+9))

... 209 = 4w +9 . . . . . . divide by 2, collect terms

... 200 = 4w . . . . . . . . subtract 9

... 50 = w . . . . . . . . . . divide by 4

... length = 3w+9 = 3·50 +9 = 159

The dimensions of this piece of land are 159 cm by 50 cm.

You might be interested in
Find the value of the variable What is x?
yaroslaw [1]

Answer:

x = 7

Step-by-step explanation:

I think there may be other ways to do this ... but this is one I  guess....

one angle= 90 ( given)

the other = 45 (given)

the third = 90 + 45 + a = 180  

(all angles of triangles is 180 [angle sum property])

                a = 180 - 135

                   = 45

The base angles are equal so that means it is a isoscles triangle. In isoscles triangle, two sides are equal ,  so

if one side is 7

the x is 7 too

(as it cant be the hypothenus)

I think this is right

5 0
3 years ago
Can anybody help me please
vagabundo [1.1K]

Answer:

Not entirely positive of about the answers, but all of the values would equal 15

First Y = 5

First X = 15

Second X = -3

6 0
3 years ago
Read 2 more answers
Does the following represent the Substitution Property? If y = 2x and x = 6 then y = 12.
kati45 [8]

YES because 2 times 6 =12


3 0
3 years ago
I’ll give brainliest
diamong [38]

Answer:

A=115.6

Step-by-step explanation:

Hey There!

So the first step is to find the formula for area of a trapezoid

A = \frac{1}{2} h(b1 +b2)

h = height

b1 = base 1

b2 = base 2

now all we do its plug in the values

A=\frac{1}{2} 6.8(28.3+5.7)

6.8x26.3=192.44\\5.7x6.8=38.76\\38.76+192.44=231.2\\\frac{231.2}{2} =115.6\\A=115.6

Hope this helps!!

3 0
2 years ago
50 more points<br> sdadadada
creativ13 [48]

Switch the variable x and y with each other. Then the correct option is B.

<h3>What is inverse of a function?</h3>

Let the function will be

f: X → Y

Then the inverse function will be

f⁻¹: Y → X

The function is given below.

f(x) = 3x – 10

Then the inverse function of the f(x) will be

Put y in place of f(x).

    x = 3y – 10

  3y = x + 10

    y = (x + 10) / 3

Switch the variable x and y with each other.

Then the correct option is B.

Learn more about inverse function here:

brainly.com/question/19425567

#SPJ1

7 0
1 year ago
Other questions:
  • Help with this question
    8·1 answer
  • Find the area of the trapezoid.<br><br> 168 in2<br> 72 ft2<br> 94.5 ft2<br> 84 ft2
    13·2 answers
  • Use the FOIL method to find the product. (8a − 8)(4a + 1)
    8·1 answer
  • If one side of a triangle is 70 degrees and the other side is 37 Degress what is the length of the third side
    7·2 answers
  • HELP ASAP!!
    15·2 answers
  • The figure shows a bridge support, a cable, and the roadway of a bridge.
    13·1 answer
  • Write an inequality , in slope - intercept form for the graph below . If necessary , use " &lt; = " for sor " &gt; = " for 2 . (
    11·1 answer
  • 17
    8·1 answer
  • 4x - y = 10 i need all the steps and the answer
    15·1 answer
  • Can somebody just give me the answer plz and if you know how to do geometry drop your insta along with the answer pleaseee
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!