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
AlladinOne [14]
2 years ago
12

R^3 +4r^2-25r-100 Help

Mathematics
1 answer:
Marina86 [1]2 years ago
7 0

Answer:

The zeroes in this equation are -5, -4, and 5

Step-by-step explanation:

In order to find these, you need to factor by splitting. For this, we separate out the two halves of the equation and pull out the greatest common factor of each. Let's start with the front end.

r^3 + 4r^2

r^2(r + 4)

Now the second half.

-25r - 100

-25(r + 4)

Since what is left in the parenthesis are exactly the same, we can use that parenthesis next to one with what we pulled out.

(r^2 - 25)(r + 4)

And we can further factor the first parenthesis using the difference of two squares

(r^2 - 25)(r + 4)

(r + 5)(r - 5)(r + 4)

Now that we are fully factored, set each parenthesis equal to 0 and solve for x.

r + 5 = 0

r = -5

r - 5 = 0

r = 5

r + 4 = 0

r = -4

You might be interested in
Find the height of a square pyramid with volume 26.97 ft3 and dimensions of base 3 ft by 3 ft. 7 ft 8 ft 9 ft 10 ft
scoundrel [369]
The answer is 3ft because i know im in high schooland u have to find the legth
5 0
2 years ago
Are these all correct?
sladkih [1.3K]
Problem 1) Line n is the line of symmetry (not line o) because we can fold the lower half to match up with the upper half. The folding line is over line n.

Problem 2) I agree. Nice work on getting the correct answer. The folding line is a vertical line through the center

Problem 3) It's hard to say for sure, but I think the top left corner is NOT reflective over any line of symmetry no matter how you rotate it. So I would uncheck that box. I agree with your other choices though. Great job with those. 
4 0
3 years ago
One year, in school A, 162 students leave and 109 go to university. In school B, 75 students leave and 68 go to university. Comp
eduard

Answer:

in school a , 67.3 % of leaving students go to university.

in school b ,90.7% of leaving students go to university

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
josh and his friends are going to the carnival. hot dogs cost $1.50 each and drinks are $0.75 each. they have a total of $12 to
Art [367]
They could have 10 hotdogs which equals $7.50 and 3 drinks which equals $4.50. $7.50+$4.50 = $12
5 0
3 years ago
Robin invests $3,210 in an account that is compounded annually and pays
igor_vitrenko [27]

Answer:

the factor is an increasing value of 17/332 or the power of pointed answers of interest of 3.4% which makes it aroujd 2 but doesnt matter because its the factor and not issued investment

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Omari drives a car that gets 18 miles per gallon of gasoline. The car's gasoline tank holds 15 gallons. The distance Omari drive
    7·1 answer
  • Which measure is usually the least useful in describing the data for a stem-and-leaf plot? range median mode mean
    14·1 answer
  • Any help is good but kinda hard
    15·1 answer
  • Simplify (10–2) 4. A) 10^-8 B)10^-6 C)-10^-6 D)-10^8
    10·2 answers
  • I need help with 6 & 8
    11·1 answer
  • 3/4(x+21)=10 1/2 help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    9·1 answer
  • Identify the net that corresponds to the figure below. A. B. C. D.
    6·2 answers
  • Is this correct? Please help! It’s multi solution
    8·1 answer
  • Solve for g:g+3/4=1/8
    6·2 answers
  • Please help!!<br> Find the value of the variables. Leave in simplest radical form.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!