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]
3 years ago
10

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

Mathematics
1 answer:
Yuliya22 [10]3 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
Change 3 radians to degree measures
uysha [10]

<span>π radians =180∘</span>

1 radian = tex] \frac{180°}{ \pi} [/tex]π

3 radians = \frac{540°}{ \pi}

7 0
3 years ago
Read 2 more answers
PLEASE answer asap ps. 99 POINTS
Dimas [21]
Write the number out:
ex) 2 dots on number 3 so write number 3 twice and etc

3,3,4,5,5,5,6,8,8
find the middle number
5 is the middle number so it’s the median

8 0
3 years ago
Read 2 more answers
WILL MARK BRAINLEST ! HELP! THANK YOU!
Bond [772]

Answer:

By definition of congruence

Step-by-step explanation:

Triangle ABC is congruent to triangle DBE

7 0
3 years ago
The length and width of a rectangle are consecutive integers. The perimeter of the
Hunter-Best [27]

The length of the rectangle is 9 feet and the width of the rectangle is 10 feet.

<h3>What is the Perimeter of a Rectangle?</h3>

The sum of a rectangle's boundary lengths on all sides is known as its perimeter. A rectangle's perimeter is a linear measurement that can be expressed in meters, feet, inches, or yards. Let's first comprehend the two fundamental characteristics of a rectangle.

  • A rectangle has four 90° angles.
  • The lengths of a rectangle's diagonals are equal.

Let the length of the rectangle be x feet

Then, the width of the rectangle will be x+1feet

We know that the perimeter of a rectangle is given by

P= 2(l+w)

Here

P= perimeter of a rectangle

l=length of the rectangle

w= width of the rectangle

Put l=x, w= x+1 and P= 38 in the perimeter formula

38 = 2(x+x+1)

Divide both sides by 2

19= x+x+1

19= 2x+1

Subtract 1 from both sides

18=2x

Divide both sides by 2

x=9 feet

This is the length of the rectangle.

Now, the width x+1 of the rectangle will be

9+1 = 10 feet

To know more about the perimeter of a rectangle, visit:

brainly.com/question/2142493

#SPJ9

5 0
9 months ago
Find he measure of xi<br> 5x-2<br> H
Aleks [24]
I think it’s-10. Hope it’s right.
5 0
3 years ago
Other questions:
  • Multiply<br> 11 x 34.12 <br><br> I’m so confused?
    15·1 answer
  • Below is the five Number summary for a 136 hikers who recently completed the John muir trail JMT the variable is the amount of t
    14·1 answer
  • Why is the periodic table called the "alphabet of the universe”
    14·1 answer
  • PLEASE BE KIND AND HELP ME ON THIS QUESTION!<br> WARNING ONLY IF YOUR GOOD AT MATH
    9·1 answer
  • 32 X (-5)
    11·1 answer
  • X/5 = -3 x=____ help
    10·2 answers
  • Bobby has been driving at a constant speed for the last 2 hours. If Bobby traveled 150 miles within the 2 hours, what is his con
    5·1 answer
  • 2. Karen was cutting out some fabric
    11·2 answers
  • Solve the equation 2x + 21/5 = 9
    11·2 answers
  • A tomato sauce recipe calls for 3/4 Cups of basil for each 1/8 teaspoon of salt. If 1 cup of basil
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!