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
Aleksandr [31]
3 years ago
5

The length of a rectangle exceeds three times its width by 9 if the perimeter is 66 find the width of the rectangle?

Mathematics
1 answer:
morpeh [17]3 years ago
4 0
Answer: 6
Step by step:
W is width, l is length, p is perimeter
The perimeter of a rectangle is 2w+2l.
l=3w+9
2l=6w+18
2l+2w=8w+18
P=8w+18
66=8w+18
48=8w
W=6
Hope this helps.
You might be interested in
Whixh graph shows a plot of the complex number I -2?
Mrac [35]
Mona mona mona mona monq mona
5 0
3 years ago
Two integers, a and b, have a product of 36. What is the least possible sum of a and b?
Minchanka [31]
<h3>Answer:  12</h3>

==============================================================

Explanation:

The two integers multiply to 36, so,

ab = 36

which solves to

a = 36/b

Then we want to add the numbers such that we get the smallest possible result.

a+b = (36/b)+b

So we want (36/b)+b to be as small as possible.

Let's say we replace b with x and we consider this function

f(x) = (36/x) + x

The goal is to find when f(x) is smallest, ie, we want to minimize the function.

If we were to graph out the function, we get the curve shown below.

To make things easier, we'll only focus on positive values of x.

The lowest part of the curve is what we're after. Using the "minimum" function/feature on the graphing calculator, we would then find the lowest point occurs at (6,12). This point is considered a local minimum because it's the lowest point in that given neighborhood of x values.

So the input x = 6 leads to the smallest output f(x) = 12.

This in turn means b = 6 is going to pair with a = 36/b = 36/6 = 6.

In short, a = 6 and b = 6.

----------------------

As a check,

a*b = 6*6 = 36

a+b = 6+6 = 12

We can make a table of various values to help confirm that 12 is the smallest sum.

Side note: If you're not allowed to use a graphing calculator, then you'll need to use calculus.

8 0
2 years ago
HELP WILL GIVE BRAINLIEST BUT MUST ANSWER ASAP
ser-zykov [4K]

Answer:a and point b

i hope i helped u

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
. Evaluate each of the following without using a calculator. Show all steps clearly. - 5^2​
Verizon [17]

Answer:

25

Step-by-step explanation:

-5^2 expanded is  -5 x -5

- two negatives equal a positive

-visual representation of 5 x 5

O O O O O

O O O O O

O O O O O

O O O O O

O O O O O

7 0
2 years ago
3
Anastaziya [24]

Answer:

2329 are girls out of 37 boys in school in 2366 total

8 0
3 years ago
Other questions:
  • How do you multiply
    10·2 answers
  • What's the equivalent fraction to 32/41
    15·1 answer
  • The difference of a number multiplied by 2 tens and 3 sevens is 119. What is the number?
    15·1 answer
  • Add. 2.9x10^5+8.7x10^5 express your answer in scientific notation. enter answer in boxes __x10__
    13·1 answer
  • Simplify (c^2 + 2c- 6)(c+5
    7·1 answer
  • In the coordinate plane , the points (-3,2) and (7,-2) are the endpoints of a diameter of a circle. what are the coordinates of
    6·1 answer
  • A recipe for 12 baked chocolate chip cookies calls for 2 cups of flour to 0.75 cups of semi-sweet chocolate chips. What is the r
    8·1 answer
  • When Angelo cashed a check for $170, the bank teller gave him 12 bills, some $20 bills and the rest $10 bills. How many bills of
    5·1 answer
  • Select the statement that correctly describes the relationship between these two sequences: 1, 2, 3, 4, 5 and 10, 20, 30, 40, 50
    6·2 answers
  • Vector u = &lt;11, 12&gt;, v = &lt;-16, 6&gt;, and w = &lt;4, -5&gt;. Match each vector operation with its resultant vector expr
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!