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
Aleks [24]
3 years ago
8

The length of a rectangle is 1 less than twice the width.

Mathematics
2 answers:
vladimir1956 [14]3 years ago
7 0

w-width\\2w-1-length\\w(2w-1)=2w^2-w-the\ area\\28\ ft^2-the\ area\\\\\text{The equation:}\\\\2w^2-w=28\qquad\text{subtract 28 from both sides}\\\\2w^2-w-28=0\\\\2w^2-8w+7w-28=0\\\\2w(w-4)+7(w-4)=0\\\\(w-4)(2w+7)=0\iff w-4=0\ \vee\ 2w+7=0\\\\w-4=0\qquad\text{add 4 to both sides}\\\boxed{w=4}\\\\2w+7=0\qquad\text{subtract 7 from both sides}\\2w=-7\qquad\text{divide both sides by 2}\\w=-3.5

Alex73 [517]3 years ago
3 0

Answer:

equation = 2w^2- w- 28 =0

length =7

You might be interested in
Let ​ f(x)=x^2+5x−8​. What is the average rate of change from x = 2 to x = 6?
Lena [83]
F(2)=4+10-8=6; f(6)=36+30-8=58. Average rate of change is (58-6)/(6-2)=52/4=13
7 0
3 years ago
One angle in a complementary pair of angles measures 3 times the other angle.
GuDViN [60]

Answer:

22.5 degrees

Step-by-step explanation:

Complementary angles add up to be 90 degrees. You can model the simple equation x+3x=90 where is x is the small angle and 3x is the large angle.

4x=90\\x=22.5

the smaller angle is 22.5 degrees

4 0
2 years ago
Solve: 3n - 6 = -8(6 +5n)<br> and explain how to solve it
hjlf

Answer:

Step-by-step explanation:

First use distributive property: a(b + c) = a*b + a*c

3n - 6 = -8(6 + 5n)

3n - 6 = 6 * (-8) + 5n *(-8)

3n - 6 = -48 - 40n

Now add 40n to both sides

3n - 6 + 40n = -48 - 40n + 40n

43n - 6 = -48

Now add 6 to both sides

43n - 6 + 6 = -48 + 6

           43n = -42

               n = -42 /43

4 0
3 years ago
Read 2 more answers
A right triangle has legs of 5 ft and 6 ft. What is the length of the hypotenuse? _____ ft.
yarga [219]

Answer:

2.) 7.8

Step-by-step explanation:

We can use Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

5^2 + 6^2 = c^2

25+36 = c^2

61 = c^2

Take the square root of each side

sqrt(61) = sqrt(c^2)

7.810249676 = c

7 0
3 years ago
Read 2 more answers
What is the opposite of 3√ ?<br><br><br> 13√<br><br> −3√<br><br> −32 <br><br> 3²
Ivan

Answer:

D or B

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • In simplest radical form what are the solutions to the quadratic equation 0=-3x^2-4x+5
    12·2 answers
  • In a basket there are 24 sweet
    14·1 answer
  • A pancake recipe suggests that you use a 2/3 cup of water for every cup of pancake mix. If you plan to use 7/2 cups of the mix,
    14·1 answer
  • Joan is 5 years older than Ellen, and 3 years ago the sum of their ages was 17 years. In how many years will Joan be 21 years ol
    13·1 answer
  • Reid and Maria both play soccer. This season Reid scores 4 less than twice the number of goals that Maria scored the difference
    14·1 answer
  • Some people were asked how long it takes them to commute to work. USe the data for 9-11
    5·1 answer
  • PLEASE HELP THIS PRETTY HARD!
    8·1 answer
  • What is the answer to -x+7=8
    6·2 answers
  • *Urgent* im not sure look at the picture
    9·2 answers
  • Answer this for me please
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!