Answer:
t = 4.5 seconds
Step-by-step explanation:
It is given that, a golfer hits a ball from a starting elevation of 4 feet with a velocity of 70 feet per second down to a green with an elevation of −5 feet.
The number of seconds t it takes the ball to hit the green can be represented by the equation as follows :
......(1)
We need to find time taken by the ball to land on the green. Solving the quadratic equation (1) we get :
t = -0.125 s and t = 4.5 s
Ignoring t = -0.125 s, we get the time taken by the ball to land on the green is 4.5 seconds.
To figure this out, we just need to simplify as much as we can for each problem, and then find a common denominator.
A
4/6 = 9/12
2/3 = 3/4
this is false
B
4/6 < 9/12
2/3 < 3/4
8/12 < 9/12
this is true, but let's look at the others just in case
C
4/6 > 10/12
2/3 > 5/6
4/6 > 5/6
this is false
D
It looks like C and D are the same. This means D is also false.
So B is the only true statement
Answer: B
Number of pieces of chalk that are yellow is 6
<h3><u>Solution:</u></h3>
Given that there are 18 pieces of chalk
To find: number of pieces of chalk that are yellow
Given that, ratio of chalk that is yellow to chalk that is not yellow is 1 : 2
Therefore,
chalk that is yellow : chalk that is not yellow = 1 : 2
Let the chalk that is yellow be 1x
Let the chalk that is not yellow be 2x
Also, total pieces of chalk = 18
That is,
chalk that is yellow + chalk that is not yellow = 18
1x + 2x = 18
3x = 18
x = 6
number of pieces of chalk that are yellow = 1x = 1(6) = 6
Thus 6 chalk pieces are yellow
Answer:
she saved 12 cents with the coupon 82-60=12
Step-by-step explanation:
