m^2 -11m -60 = 0
m^2 -11m =60
(m^2 -11m + 121/4) = 361/4
(m - 11/2)^2 = 361/4
m - 11/2 = + or - 19/2
m = 11/2 + 19/2, 11/2 - 19/2
m = 15, -4
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m^2 -11m -60
(11 +- Square root (121 +240))/2
11/2 +- 19/2
m= 15, -4
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m^2 -11m -60
(m - 15) (m + 4)
m = 15, -4
Answer:
Step-by-step explanation:
Given
Solving (a): Equation when it hits the ground.
This means that 
So, we have:
Solving (b): The value of t in (a)
Using quadratic formula, we have:
This gives:
Split
Time can't be negative; So:
Answer:
Step-by-step explanation:
y=3(x-3)(x-4)
=3(x²-4x-3x+12)
or y=3(x²-7x+12)
or y=3x²-21x+36
C+d=14
c-6=d
then you will plug c+6 in the first equation and you will get:
c+c-6=14
then you get
2c=20
c=10, so the cat is ten years old
the cat is 6 years older than the dog, so the dog is 4 years old
hope that helps :)
Tan C = 350 / 500
tan C = 0.7
∠ C = tan^(-1) 0.7
∠ C = 34.99° ≈ 35°
Answer:
The measure of angle C is
A. 35°
