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
kondaur [170]
4 years ago
10

R^2+8r=-7solve the equation with the quadratic formula showing work

Mathematics
1 answer:
Yuliya22 [10]4 years ago
7 0

Answer:

Step-by-step explanation:

r²+8r=−7

Step 1: Subtract -7 from both sides.

r²+8r−(−7)=−7−(−7)

r²+8r+7=0

Step 2: Use quadratic formula with a=1, b=8, c=7.

r=r=\frac{-b+or-\sqrt{-4ac}  }{2a}

r=\frac{-8+or-\sqrt{(8})^2-4(1)(7) }{2(1)}

You might be interested in
Answer with A B C D. Correct answer gets brainlest.
miv72 [106K]

c

for exponents it's always multiplication with each number

Ex.

5 exponent 4

5 x 5 x 5 x 5

7 0
3 years ago
Help ! <br><br> Will mark as brainliest
dmitriy555 [2]

Answer:

<h3 /><h3>3x^{2} y^{4} X 2x^{6} y =6x^{8} y^{5}</h3>

Hope this helps!

:)

3 0
3 years ago
What is the factor of 4x + 10
Mars2501 [29]

Answer:

2(2x + 5)

Step-by-step explanation:

2 is common to both 4x and 10, so 4x + 10 = 2(2x + 5)

7 0
3 years ago
Now Cathy is three times as old as Katie. In six years Cathy will be only twice as old as Katie. How old is each girl now?
BabaBlast [244]
Katie is 6; Cathy is 18!

X- Katie’s age now and 3x -Cathys age now
In 6 years, Katie is 12 and Cathy is 24.

2 x (X+6) = 3x + 6
2x + 12 = 3x + 6
6 = x
6 0
4 years ago
183+6281+58+4561-44627-351+2427x56792x572952x527
Blizzard [7]

Answer:

The answer is 4.161844e+16

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Find the value of two numbers if their sum is 11 and their difference is 3
    11·2 answers
  • What is the value of the 24th term in the following arithmetic sequence?<br><br> -9, -2, 5, 12, ...
    6·1 answer
  • If x equals 5, then find the matching value for y.<br> 3x+y=9
    9·2 answers
  • Can someone help me please
    15·1 answer
  • Which of the following is a false statement? *
    6·1 answer
  • What is the range of y = sec x? answers: a.(-infinite, -1] u [ 1, infinite)
    12·2 answers
  • ANSWER ASAP
    5·1 answer
  • Math Properties Homework
    11·2 answers
  • Brainly, please add a new feature where you have to verify your email to stop bots!
    13·2 answers
  • Help please, I don't know how to get QS
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!