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
MatroZZZ [7]
3 years ago
9

R2+2r-33=0 solve by completing the square

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0
R^2+2r-33=0  move constant to other side by adding 33 to both sides

r^2+2r=33   halve the linear coefficient, square it and add to both sides, in this case it is just one

r^2+2r+1=34  now the left side is a perfect square...

(r+1)^2=34  take the square root of both sides...

r+1=34^(1/2)  subtract 1 from both sides

r=-1+34^(1/2) and -1-34^(1/2)
You might be interested in
The difference between five times a number and twice that number
lara31 [8.8K]
<span>The difference between five times a number and twice that number = 15</span>
7 0
3 years ago
( 8k + 9) - (6k + 5)
Katena32 [7]

Answer:

The expression is 2k + 4.

Step-by-step explanation:

You have to collect like-terms :

(8k + 9) - (6k + 5)

= 8k + 9 - 6k - 5

= 2k + 4

3 0
3 years ago
Read 2 more answers
I WILL GIVE 30 POINTS TO THOSE WHO FILL IN THE BLANK CORRECTLY
matrenka [14]

Answer:

x=7

Step-by-step explanation:

by pythagoras, 25^2=24^2+x^2

solve for x

6 0
2 years ago
5=1/3(2x+12)<br><br> Solve for X in simplest form
garik1379 [7]

9514 1404 393

Answer:

  x = 3/2

Step-by-step explanation:

Multiply by 3 and solve the resulting 2-step equation.

  5 = (1/3)(2x +12)

  15 = 2x +12 . . . . . . multiply by 3

  3 = 2x . . . . . . . . . . subtract 12

  3/2 = x . . . . . . . . . . divide by 2

4 0
3 years ago
Round 219.870754015 to the nearest hundred.
KatRina [158]

Answer:

200

Step-by-step explanation:

Because you are rounding to the hundreds, you look at the tens place. The tens place is a "1" and 1 is below five, so you round down to 200.

4 0
3 years ago
Read 2 more answers
Other questions:
  • 6.099 to underlined digit 0
    10·2 answers
  • A ceiling fan has
    9·1 answer
  • A ball is projected with velocity 10m/s at an angle of 30 degrees with the horizontal surface . The time taken by the ball to re
    6·1 answer
  • What is the volume of a sphere that has a radius of 18ft​
    9·1 answer
  • Solve for b.<br><br> -3b = 9 - 4b<br><br> B=
    10·1 answer
  • A farmer has a rectangular field with length 1 mile and width 0.5 miles. How much fencing would it take to enclose his field?
    11·2 answers
  • Will give brainliest
    5·2 answers
  • Lught herzu <br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%20%7B2%7D%20%20-%20xy%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20%20-%20x
    10·2 answers
  • Please answer! I’m desperate lol
    10·2 answers
  • 1 2/5 as an improper fraction
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!