Answer:
two real roots
Step-by-step explanation:
y = -2x^2 + 9x - 7
This is in the form
ax^2 +bx+c
a = -2 b = 9 c = -7
The discriminant is
b^2 -4ac
(9)^2 - 4(-2) (-7)
81 - 56
25
Since the discriminant is greater than zero, there are two real roots
Answer:
The answer is 29 cm.
Step-by-step explanation:
The side we are looking for is the longest side of the right triangle, called a hypotenuse.
To find it, we first have to square 20, which equals 400. Then, square 21, which equals 441. Next, add 400 and 441 to make 841, then find the square root of 841, which is 29.
I hope this helped! :-)
Answer: 40
Step-by-step explanation:
Answer:
14:12
28:24
35:30
Step-by-step explanation:
I hope this helped
Answer:
385 miles
Step-by-step explanation:
since Patel drove 165 miles in 3 hours, we can divide the 2 to find the miles per hour.
165mi/3 hr = 55 mph
we can multiply this number by 7 to see how many miles Patel will travel going this speed.
55 mph × 7hr = 385 miles
