We know that
<span>foci on x-axis-------> is a ellipse with horizontal major axis
the equation is
(x</span>²/a²)+(y²/b²)=1
major axis is th<span>e </span>x<span>-axis with length </span><span>2<span>a
2a=14--------> a=7
</span></span>minor axis is the y<span>-axis with length </span><span>2<span>b
2b=4-----> b=2
the equation is
</span></span>(x²/a²)+(y²/b²)=1------> (x²/7²)+(y²/2²)=1-----> (x²/49)+(y²/4)=1
the answer is(x²/49)+(y²/4)=1
see the attached figure
12001, 12002, 12003 so lol
11 = -d+15
subtract 15 from each side
-4 = -d
divide both sides by -1
d = 4
Answer:
No
Step-by-step explanation:
We can not determine that the low test scores are caused by sleep deprivation. Because there are many factors that can affect on a student's test score such as:
- not carefully review all the lesson before the test
- the feeling of nervous in the exam room
- poor academic ability
- ....so on
So, getting less than 8 hours of sleep is just one of the independent variables determining the test score, it is not a strong correlation.