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
Reika [66]
3 years ago
12

5r2 - 8r =0the 2 is quared.​

Mathematics
1 answer:
melamori03 [73]3 years ago
6 0

Answer:

{0, 8/5}

Step-by-step explanation:

Please present this  5r2 - 8r =0  as 5r^2 - 8r = 0   or as  5r² - 8r = 0.

Factoring out the r, we get                             r(5r - 8) = 0.

Setting each factor = 0 separately and finding r in each case, we get:

r = 0 and

5r = 8, so that r = 8/5.

The roots of this polynomial equation are {0, 8/5}.

You might be interested in
If x is -3 and y is 2 what is x ^ 2 + y ^ 2 ​
Pavlova-9 [17]

Answer:

ans=-2

Step-by-step explanation:

-3*2+2*2

=-6+4

=-2

4 0
3 years ago
What's the right answer?
Masja [62]

Given:

sinh(f(x))=1+x^2

To find:

The value of f'(x).

Solution:

Formulae used:

\dfrac{d}{dx}sinh(x)=cosh(x)

\dfrac{d}{dx}x^n=nx^{n-1}

\dfrac{d}{dx}C=0

Chain rule:

\dfrac{d}{dx}[f(g(x))]=f'(g(x))g'(x)

Where C is an arbitrary constant.

We have,

sinh(f(x))=1+x^2

Differentiate with respect to x.

cosh(f(x))f'(x)=0+2x

f'(x)=\dfrac{2x}{cosh(f(x))}

Therefore, the required values is f'(x)=\dfrac{2x}{cosh(f(x))}.

7 0
3 years ago
Need help plz .You have $2500 to invest in two different accounts. In order to save the money you need for college, you need to
siniylev [52]

I’m pretty sure that it’s C

7 0
3 years ago
Read 2 more answers
Which of the following accurately describes an effect of smoking?
stepladder [879]
You haven't posted the answer choices, but I think I've run across this question before and remember the answer. The answer should be whichever letter says as follows: "Smoking damages cilia in the trachea and more particles enter the lungs. Hope this helps!~
6 0
3 years ago
Using the image above, what is the measure of Side AC? Round to the nearest hundredth
Evgesh-ka [11]

To solve this problem, we just have to use trigonometric ratios and apply which of the ratios is needed here and proceed to solve. The value of side AC is 2.85 units

<h3>Trigonometric Ratio</h3>

In the given diagram, we have the value of angle and hypothenuse and we are required to find the adjacent side of the triangle.

Data;

  • Angle = 32.9 degrees
  • Hypothenuse = 3.4

Let's use cosine rule for this.

cos\theta = \frac{adjacent}{hypothenuse}

Proceed to substitute the values into the equation and solve.

cos 32.9 = \frac{AC}{3.4} \\AC=3.4cos32.9\\AC = 2.85

From the calculations above, the value of side AC is 2.85 units

Learn more on trigonometric ratio here;

brainly.com/question/11967894

#SPJ1

3 0
2 years ago
Other questions:
  • What is scatterplot ?
    10·2 answers
  • James has noticed that the number of new tree branches that have grown on a tree in his backyard each year follows the sequence
    14·1 answer
  • What is the measurement of 6 centimeters equal to
    10·2 answers
  • 6. Alex wants to purchase a set of 9 figurines that cost $40 each. So far he 6 points
    7·1 answer
  • Do not answer until you see an image.
    11·1 answer
  • Solve for X<br><br> Thank youuu
    15·1 answer
  • Four relatives are going to give you money for your birthday. The amount each relative gives you is equally likely to be any num
    6·1 answer
  • An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviatio
    9·1 answer
  • Alma just turned 15 years old. Her parents started saving $300 each month for her college education when she was born. Her paren
    13·2 answers
  • The B737-400 aircraft costs $2948 dollars per hour to operate. The algebraic expression 2948t gives the total cost to operate th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!