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
wel
4 years ago
13

A rectangle has a length of 28 meters less than 7 times its width. If the area of the rectangle is 9555 square meters, find the

length of the rectangle.
Mathematics
1 answer:
babunello [35]4 years ago
7 0

Answer:

7 meters

Step-by-step explanation:

Assume that the length is l and the width is w. Therefore, l is equal to 7 times its width (7*w) minus 28, or l=7*w-28. As we know that w*l = area = 9555, we can plug our value for l in to limit our equation to 1 variable, resulting in w*(7*w-28) = 9555. Adding 28 to both sides to separate the 7w (because we want to solve for that), we get 9583=7w. Then, to solve for the width, we can divide both sides by 7 to get that 9583/7=1369=w. Plugging that back into the formula that w*l=area, we get that 1369*l=9583 -- dividing 1369 from both sides to separate l, we get that l=7.

You might be interested in
Use the number line to name the fraction or decimal
zhannawk [14.2K]
E: 2.4
F 2.8
hope that helps, each half point is going up by .1
8 0
3 years ago
Write an equation in point-slope form of the line that passes through (7, -6) and has the slope m=12.
Goshia [24]

Answer:

Step-by-step explanation:

y + 6 = 12(x - 7)

y + 6 = 12x - 84

y = 12x - 90

6 0
4 years ago
Lim x→π/2 1-sinx/cot^2x<br>any genious help please ​
Simora [160]

Rewrite the limand as

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = (1 - sin(<em>x</em>)) / (cos²(<em>x</em>) / sin²(<em>x</em>))

… = ((1 - sin(<em>x</em>)) sin²(<em>x</em>)) / cos²(<em>x</em>)

Recall the Pythagorean identity,

sin²(<em>x</em>) + cos²(<em>x</em>) = 1

Then

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = ((1 - sin(<em>x</em>)) sin²(<em>x</em>)) / (1 - sin²(<em>x</em>))

Factorize the denominator; it's a difference of squares, so

1 - sin²(<em>x</em>) = (1 - sin(<em>x</em>)) (1 + sin(<em>x</em>))

Cancel the common factor of 1 - sin(<em>x</em>) in the numerator and denominator:

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = sin²(<em>x</em>) / (1 + sin(<em>x</em>))

Now the limand is continuous at <em>x</em> = <em>π</em>/2, so

\displaystyle\lim_{x\to\frac\pi2}\frac{1-\sin(x)}{\cot^2(x)}=\lim_{x\to\frac\pi2}\frac{\sin^2(x)}{1+\sin(x)}=\frac{\sin^2\left(\frac\pi2\right)}{1+\sin\left(\frac\pi2\right)}=\boxed{\frac12}

4 0
3 years ago
Answer anyone ? Tyia :)
Y_Kistochka [10]

Answer:

80°

option b

Step-by-step explanation:

angle 1 is equal to angle 2 because they are alternate angles and alternate angles are always equal.

5 0
3 years ago
Read 2 more answers
Helpp me please !!!!
sesenic [268]
51. is -150. you just minus 350 from 200
5 0
3 years ago
Read 2 more answers
Other questions:
  • Lydia runs an experiment to determine if a coin is fair by counting the number of times a coin lands heads up. The table shows h
    7·2 answers
  • Solve : X^2 - 3x = -8<br><br><br> And <br><br><br> Solve : -2x^2 - 16x - 44 = 0
    14·1 answer
  • A computer program in Shannon’s computer carries out a single mathematical operation in 1.5 × 10-6 seconds. How much time would
    5·2 answers
  • Which equation represents a proportional relationship? only 1
    13·1 answer
  • In their savings accounts, Jim has $250 and Norma has $400. If Jim saves $350 a month and Norma saves $300 a month, how many mon
    15·2 answers
  • Bu soruyu yapın arkadaşlar acill lütfen yapanı en iyi seçip takip edicem 5 yıldız koyucam<br>​
    15·1 answer
  • If you need to construct a dog run for your dog and the total perimeter needs to be 40 feet, and you only have enough room to ma
    12·1 answer
  • Snappys, Inc. is a company that produces digital cameras. They are planning to release a new line of camera.
    12·1 answer
  • 6y + 40 = 100<br> What is y?
    9·2 answers
  • Consider the parametric equations below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!