You can use the discriminant rule, which is :
b^2 -4ac
“exactly one solution” means that it is equal to zero
so:
b^2 -4(4)(9)=0
b^2 -4(36)=0
b^2 -144=0
b^2=144
square root both sides
b=12 or -12

hope this helps !

3 0

3 years ago

Read 2 more answers

John is making himself a lunch. He has 3 different soups to choose from, 4 kinds of pop, and 3 different kinds of fruit. How man

notsponge [240]

36 combinations im pretty sure 3*4*3=36

5 0

3 years ago

In Las Vegas, Nevada, stores charge a 4.6% state sales tax and a 3.65% county sales tax. Yuki is purchasing a handbag priced at

zysi [14]

Answer:

$18.15

Step-by-step explanation:

4 0

2 years ago

Convert 5/-6 to decimal​

Convert 5/-6 to decimal