T1nydancer
T1nydancer T1nydancer
  • 25-02-2019
  • Mathematics
contestada

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

Respuesta :

marshmellmoe marshmellmoe
  • 05-03-2019

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=[tex]r=\frac{-b+or-\sqrt{-4ac}  }{2a}[/tex]

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

Answer Link

Otras preguntas

Order from least to grates 0.65 0.59 3/5
HURRY PLZI DONT HAVE MUCH TIME LEFT 20 PTS AND MARKED AS BRAINLIEST When He-Ping says that he wouldn't miss it for the world, he means that A) he is not sure
Write the prime factorization of 42. Order the factors from least to greatest
Alison has 1/2 cups of yogurt for making fruit parfaits.each parfait requires 1/8 cup of yogurt.how many parfaits can she make?
Murray is observing a bacterial colony that is growing in agar in a petri dish. Agar is processed seaweed. Murray calculates that the population doubles in size
____________ occurs if your license was issued because of a mistake or fraud (i.e. giving false information or identification).
Mosaics, frescos, and sculptures are all forms of literature. artistic techniques. ways to decorate walls. types of arches. will give brainliest to the best ans
Enter an inequality that represents the graph in the box.
The image below shows two parallel lines cut by a transversal. What is the value of x + y?
what seaport did the us gain through the Louisiana purchase