B
given a quadratic equation in standard form
ax² + bx + c = 0
Then we can describe the nature of the roots using the discriminant
Δ = b² - 4ac
• if b² - 4ac > 0, then 2 real, distinct and irrational roots
• if b² - 4ac > 0 and a perfect square, then real and rational roots
• if b² - 4ac = 0, then real and equal roots
• if b² - 4ac < 0, then roots are not real
for x² + 9x + 14 = 0
with a = 1, b= 9 and c = 14, then
b² - 4ac = 9² - (4 × 1 × 14 ) = 81 - 56 = 25
Since b² - 4ac > 0 and a perfect square, then roots are real and rational
1)
B. 16
2)
D.14.80
Multiply the percentage by the amount
If using a calculator, 90% is 90/100
Answer:
4
Step-by-step explanation:
14 feet is the perimeter
to get the perimeter you need to add alll the sides together
if the length is 3 feet then u add
3 + 3 for both sides
then you subtract 6-14
and that is 8
then you divide it by 2 becuase u need it for one side not both sides combined
Answer:

Step-by-step explanation:
we know that
To find out the total yards of fabric used, add up the yards of fabric used for Nickys' room and the yards of fabric used for Linda's room
so

Convert mixed number to an improper fraction

Adds the fractions

Convert to mixed number

No, 9/12 is equivalent to 3/4.
Hope this helps.