Answer:
f(-3) =17
Step-by-step explanation:
f(x)=2x^2-1
Let x = -3
f(-3)=2(-3)^2-1
= 2(9) -1
= 18-1
17
Answer:
Output 2019 = 1.425 million dollar
Step-by-step explanation:
Given:
Output 2009 = 1.5 million dollar
Projected decrease output = 5%
Find:
Output 2019
Computation:
Output 2019 = Output 2009[100% - Projected decrease output]
Output 2019 = 1.5 [100% - 5%]
Output 2019 = 1.425 million dollar
22/64→11/32
49/63→7/9
24/96→¼
51/75→17/25
17/68→1/4
28/36→7/9
Let the speed of one rider = x
The speed of the second rider would e 2x ( twice as fast)
The total speed of the two riders would be x + 2x = 3x
Speed = Distance / time
Using the numbers:
3x = 72/3
Simplify:
3x = 24
Divide both sides by 3:
x = 8
The speed of one rider is 8 miles per hour
The speed of the second rider is 2(8) = 16 miles per hour.
