Answer:
The duration of the flight is 1 hour
Step-by-step explanation:
Since average speed = distance traveled / time
Let the duration of the flight be in z hours
So, (600km/z hours) - (600km/ z hours + (1/2)) = 200km/hr
Note: 1/2 is used as a result of 30 minutes increased in time which is half an hour.
200 = (600/z ) - (600/z + (1/2))
Multiply 2 through on (600/z + (1/2))
200 = (600/z ) - (1200 / (2z + 1))
Divide through by 200
= z(2z + 1) = 3
convert to quadratic equation
2z² + z = 3
2z² + z - 3 = 0
(2z + 3) ( z-1) = 0
z-1 = 0
z = 1 hour
Answer:
a=2
Step-by-step explanation:
First, we need to add 1/2 over, but we need a common denominator
To get a common denominator of 4, multiply 1/2 by 2/2
1/2*2/2=2/4
5/8a-1/2=3/4
5/8a-2/4=3/4
5/8a=5/4
Then, multiply by the reciprocal of 5/8 to isolate a
8/5(5/8a)=5/4(8/5)
a=40/20
a=2
Hope this helps!
Here's a formula to find the circumference of a circle
c = 2 × π × r
Multiplication has commutative property, we can change the order of operands without changing the result. I move 2 to the right.
c = π × 2 × r
Remember d = 2 × r
c = π × d
The answer is true. The circumference of a circle can be found by multiplying pi by the diameter
Answer:
IN slope intercept form this is y=-10x-50
y+3=-7(x+5)
y=-10(x+5)
y=-10x-50
Step-by-step explanation:
140 because 10 * 14 is 140