Answer: blue= 93.625
Step-by-step explanation:
Let the red ball be y
Four times of red is 4y
And blue is seven times of red which means 7(4y)
4y+7(4y)=107
Open the bracket
4y+28y=107
32y=107
y=107/32
Make y the subject of formula
y=3.34
Therefore,blue is
7(4(3.34))
Blue= 93.625
Answer:
c. 6.5 seconds.
Step-by-step explanation:
We have been given that a a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can be determined by the formula 
, where h is the height of the plane at t seconds.
To find the time, when plane will be at a height of exactly 20.25 feet, we will substitute 
in our given formula and solve for t as:
Take square root of both sides:
Since time cannot be negative, therefore, the plane will be at a height of exactly 20.25 feet after 6.5 seconds and option 'c' is the correct choice.
Here is my answer, hope to help you
1st thing you need to do is to graph the line y = x - 3 as a dashed line, since the it is just a less than symbol. Once the line is graphed, we need to decide which side to shade. I tend to use (0, 0) if at all possible. We check 0 < 0 - 3
Since 0 is not less than -3 then we shade away from the point (0, 0). That is how you find the answer.
Answer:
this other dudes answer don’t make any sense
