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
Paul [167]
3 years ago
5

The area of a rectangle is 72 square feet. Its length is 12 feet. Which equivalent formula could you use to find the width?

Mathematics
1 answer:
klasskru [66]3 years ago
4 0

Answer:

w=6ft

Step-by-step explanation:

72 divided by 12 is 6

Using the formula

A=wl

Solving for w

w=A

l=72

12=6ft

You might be interested in
PLEASE HELP!!!!<br> I need to solve for a, b, and c
nirvana33 [79]

Answer:

  • 25000 seats in section A
  • 14100 seats in sectin B
  • 10900 seats in section C

Step-by-step explanation:

The problem statement tells you half the total number of seats are in section A, so you already know that there are 25000 A seats. The revenue from those seats is

... 25000×$25 = $625,000

so the revenue from B and C seats must total

... $1,070,500 - 625,000 = $445,500

If all 25000 of the B/C seats were C seats, the revenue would be

... 25000×$15 = $375,000

The actual revenue from those seats is $445,500 -375,000 = $70,500 more than that. We know each B seat generates $5 more revenue, so there must be ...

... $70,500/$5 = 14,100 . . . . B seats

Then the balance of the 25000 B and C seats are C seats:

... 25,000 - 14,100 = 10,900 . . . . C seats

_____

<em>Alternate Solution Method</em>

The new Brainly answer format requires the answer be supplied before the working. In order to find the answer quickly so that I can fill in that section, I used a matrix method for solving the problem. The problem equations can be written ...

  • a + b + c = 50000
  • a - b - c = 0
  • 25a + 20b + 15c = 1070500

so the augmented matrix is ...

\left[\begin{array}{cccc}1&1&1&50000\\1&-1&-1&0\\25&20&15&1070500\end{array}\right]

A graphing calculator can be used to find the solution to this, generally using a function that produces the reduced row-echelon form. The attachment shows the solution using a TI-84 calculator.

___

<em>Comment on the Working</em>

Since the number of A seats is equal to the total of B and C seats, the number of A seats must be half the total number of stadium seats. Having figured that out, the problem is reduced to one of finding the mix of B and C seats that will produce the remaining revenue.

As with many mixture problems, it is convenient to look at differences. Start with the assumption that all of the desired revenue comes from the least contributor. Here, that is C seats. Then figure the difference that using a B seat makes ($20 -15 = $5) and the difference of the actual revenue and the amount that you got by assuming all C seats: 445,500 -375,000 = 70,500. Since replacing a C seat by a B seat adds $5 to the revenue, it is easy to figure the number of such replacements required in order to raise the revenue by $70,500.

If you write the equation for B seats, you find the solution to the equation mirrors this verbal description:

... 20b + 15(25000-b) = 445,500

... 5b = 445,500 - 375000 . . . . simplify, subtract 375000

... b = 70500/5 = 14100

8 0
3 years ago
Question 4 of 25
soldi70 [24.7K]

Answer:

D)graph c

Step-by-step explanation:

it's my opinion do not take it as important

7 0
2 years ago
WILL GIVE BRAINLIEST AND 100 POINTS
Airida [17]

Answer:

Apologiabiology  Ambitious

v=vanilla

c=chocolate

A.

4v+c=45

v+c=27

b.

multiply 2nd equation by -1 and add to first

4v+c=45

-v-c=-27 +

3v+0c=18

3v=18

divide both sides by 3

v=6

sub bac

v+c=27

6+c=27

minus 6

c=21

21chocolate

6 vanila

Step-by-step explanation:

5 0
3 years ago
Transform the Cartesian (rectangular) equation to a polar equation: x = -9. The selected answer is incorrect.
nika2105 [10]

Answer:

Solution : Option C

Step-by-step explanation:

We have the equations r² = x² + y², x = r cos(θ), and y = r sin(θ) that can be used to solve this problem. In this case we only need the second two equations (  x = r cos(θ), and y = r sin(θ) ) as we don't need to apply the concept of circles etc here.

Given : x = - 9,

( Substitute r cos(θ) for x )

r cos(θ) = - 9,

r = - 9 / cos(θ)

( Remember that sec is the reciprocal of cos(θ). Substitute sec for 1 / cos(θ) )

r = - 9 sec(θ)

Therefore the third option is the correct solution.

6 0
3 years ago
PLEASE PLEASE ANSWER QUICKLY
ipn [44]

Answer:

Step-by-step explanation:

perimeter of rectangle=2(length+width)

=2(70+65)

=2*135

=270 feet

4 0
3 years ago
Read 2 more answers
Other questions:
  • A square pyramid has a height h and a base with side length b. The side lengths of the base increase by 50%. Write a simplified
    13·1 answer
  • Seven subtracted from eleven times a number is -238.
    12·2 answers
  • What is 3 4/15 divided by (8 divided by 6 3/10)
    12·1 answer
  • Give one example of when you would. use the friendly numbers strategy to subtract .Explain why ?
    8·1 answer
  • Find the perimeter p of ▱jklm with vertices j(2,2), k(5,3), l(5,−3), and m(2,−4). Round your answer to the nearest tenth, if nec
    15·1 answer
  • F(x)= x^2-8x+24 in vertex form
    12·2 answers
  • HELP ILL GIVE BRAINLIEST what’s the surface area?
    6·1 answer
  • Find the missing side lengths. Answers are in simplest radical form with the denominator rationalized.
    5·2 answers
  • Which statement best describe jamies proof
    13·2 answers
  • Help fast 55 points please hurry
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!