1. discriminant = b^2 - 4ac = (-5)^2 - (4 x 1 x 7) = 25 - 28 = -3 [imaginary root]
2. discriminant = (-5)^2 - (4 x 1 x -4) = 25 - (-16) = 25 + 16 = 41 [real and irrational root]
3. discriminant = (8)^2 - (4 x 16 x 1) = 64 - 64 = 0 [double root]
Read more on Brainly.com - brainly.com/question/1698047#readmore
hope it helps
Let x represent some number
Sum of 3 and twice some number = 3 +2x
Five times the sum of 3 and twice some number: 5(3+2x)
5(3+2x)=70
15+10x=70
Subtract 15 from both sides to have 10x by itself
10x=55
Divide 10 on both sides to get x by itself
x=55/10
x=5.5
Hope this helped
I think the answer is either 3/49 or about 0.061
hope this helps.
Answer:
300 balloons.
Step-by-step explanation:
Given:
210 balloons are filled for a reception this is 70% of the entire number balloons purchased.
Question asked:
Which equation can be used to find the total number of balloons purchased ?
<u>Solution:</u>
Let total number of balloons purchased = 
70% of the number of balloons purchased = 210
Therefore, total number balloons purchased was 300.
How someone supposed to know what the table looks like..... at least add the table
