X = 4 y = - 3
Substitute x for 4 and y for - 3
<u>x² - 4y
</u> 2
<u>4² - 4 *(- 3</u><u>)
</u> 2
<u>16 - ( - 12 )</u>
2
<u>16 + 12</u>
2
<u>28</u> = 14
2
Solution: 14
Answer:
There were 120 questions on the test.
Step-by-step explanation:
It is given that:
Number of questions answered = 54
Grade percent = 45%
Let,
x be the total number of questions
45% of x = 54
Dividing both sides by 0.45
Therefore,
There were 120 questions on the test.
Answer: x=3, y=2.
Step-by-step explanation:
y = - x + 4
y = x − 2
- x + 4 = x − 2
-x-x=-2-4
-2x=-6
x=(-6):(-2)=3
y=x-2=3-2=1
x=3, y=2.
Y^3+5y^2-14y
y(y^2+5y-14)
y(y^2+7y-2y-14)
y(y(y+7)-2(y+7))
y(y-2)(y+7)
So there are infinite solutions with the only restriction being that y>2 as V>0
Answer:
10 hours and 20 minutes.
Step-by-step explanation:
We can find out how many hours of sleep Tucker gets every night by counting in one-hour intervals.
One hour from 8:25 is 9:25.
9:25, 10:25, 11:25, 12:25, 1:25, 2:25, 3:25, 4:25, 5:25, 6:25.
This is 10 hours.
Now we count in ten-minute intervals to get to 6:45
6:35, 6:45.
This is 20 minutes.
Therefore, Tucker gets 10 hours and 20 minutes of sleep each night.