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
bearhunter [10]
3 years ago
7

Solving Quadratics by Factoring r^2-8r=0

Mathematics
2 answers:
victus00 [196]3 years ago
4 0

Answer:

r = 0, r = 8

Step-by-step explanation:

Given

r² - 8r = 0 ← factor out r from each term

r(r - 8) = 0

Equate each factor to zero and solve for r

r = 0

r - 8 = 0 ⇒ r = 8

Romashka [77]3 years ago
3 0

Answer:

<h2>Algebra Examples</h2><h2>Popular Problems Algebra Solve Using the Quadratic Formula r^2-8r=0</h2><h2>r</h2><h2>2</h2><h2>−</h2><h2>8</h2><h2>r</h2><h2>=</h2><h2>0</h2><h2>r2-8r=0</h2><h2>Use the quadratic formula to find the solutions.</h2><h2>−</h2><h2>b</h2><h2>±</h2><h2>√</h2><h2>b</h2><h2>2</h2><h2>−</h2><h2>4</h2><h2>(</h2><h2>a</h2><h2>c</h2><h2>)</h2><h2>2</h2><h2>a</h2><h2>-b±b2-4(ac)2a</h2><h2>Substitute the values </h2><h2>a</h2><h2>=</h2><h2>1</h2><h2>a=1, </h2><h2>b</h2><h2>=</h2><h2>−</h2><h2>8</h2><h2>b=-8, and </h2><h2>c</h2><h2>=</h2><h2>0</h2><h2>c=0 into the quadratic formula and solve for </h2><h2>r</h2><h2>r.</h2><h2>8</h2><h2>±</h2><h2>√</h2><h2>(</h2><h2>−</h2><h2>8</h2><h2>)</h2><h2>2</h2><h2>−</h2><h2>4</h2><h2>⋅</h2><h2>(</h2><h2>1</h2><h2>⋅</h2><h2>0</h2><h2>)</h2><h2>2</h2><h2>⋅</h2><h2>1</h2><h2>8±(-8)2-4⋅(1⋅0)2⋅1</h2><h2>Simplify.</h2><h2>Tap for more steps...</h2><h2>r</h2><h2>=</h2><h2>4</h2><h2>±</h2><h2>4</h2><h2>r=4±4</h2>
You might be interested in
Jill calls a plumber to her house to fix the leaking faucets . The plumber charges a one-time fee of $50 plus an additional $35
Anton [14]

Answer:

independent=$50

dependent=$35X

Step-by-step explanation:

50 is the independent variable because it doesn't change.

35X is the dependent variable because it does change.

8 0
3 years ago
Ann worked 14 hours and earned a total of $108.50.<br> How much did she earn per hour?
Delicious77 [7]

Answer:

108.50 divided by 14= 7.75

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Help!!! Just those two, please
Lunna [17]

A. Multiply the area of the original store by the percent increase then add that to the original amount.

1200 x 0.75 = 900

1200 + 900 = 2100

Answer: 2,100 square feet.

B. 2000 x 0.30 = 600

2000 + 600 = $2,600

2600 x 0.05 = 130

2600 + 130 = 2,730

Rent :$2,730

4 0
3 years ago
What polygon is shown below?
HACTEHA [7]
That shape is a Rhombus

5 0
3 years ago
Read 2 more answers
UDISJKDFJSFJDGLFS HELP
zhuklara [117]

Answer:

I think E

Step-by-step explanation:

You know the shortest building is 25 m.

to find the rest, use trigo so Tan(20)=opposite/adjacent.

Adjacent is 50. Do the math and add the answer with 25.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Tia cut a 4 meter 8 centimeter wire into 10 equal pieces. Marta cut a 540 centimeter wire into 9 equal pieces. how much longer i
    9·2 answers
  • A.1/9 B.1/4 C.1/6 D.1/2
    12·2 answers
  • What is 3 upon 4 whole square​
    14·1 answer
  • Solve the equation. <br><br> 3(−6)=
    5·2 answers
  • What value of Z+3÷1/2 = 1 true
    11·1 answer
  • You pick a card at random what is p(2)? Write your answer as a percentage
    11·1 answer
  • A cell phone charger costs $21. There is a 10% discount this week only. The sales tax is 9%. What is the total of the phone char
    11·1 answer
  • Mr. Walker drove for 4 hours at an average rate of 48 miles per hour. How far did he drive ( here's my Buber so you can help mor
    8·2 answers
  • The circumference of a round pillow is 46.8 centimeters. Find the radius of the pillow, in centimeters. Round your
    5·1 answer
  • Starting with blue balls, in each of sequential rounds, we remove a random ball and replace it with a new red ball. for example,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!