Answer:
Steve got 32 points
Step-by-step explanation:
Take the total score and multiply by the percentage received
40 * 80%
Change to decimal form
40 * .80
32
Steve got 32 points
6.1 seconds.
In the equation L=0.8T², we will substitute 30 for L:
30 = 0.8T²
Divide both sides by 0.8:
30/0.8 = 0.8T²/0.8
37.5 = T²
Take the square root of both sides:
√37.5 = √T²
6.1 = T
Answer:
6 multiple choice questions and 22 open/extended response questions
Step-by-step explanation:
Let x be the number of multiple choice questions
Let y be the number of open response questions
Thus, we have a system of equations:
2x+4y=100
x+y=28
Solve bottom equation for desired variable, then plug in to top one:
x+y=28
x=28-y
2(28-y)+4y=100
56-2y+4y=100
56+2y=100
2y=44
y=22
Plug y back into bottom equation to get x:
x+22=28
x=6
So there are 6 multiple choice questions and 22 open/extended response questions.
Plug in 2.5 for x and you get
2.5+1 which equals 3.5
Answer:
E
Step-by-step explanation:
28=28
14*2=28
4*28
they are both equal