Answer:
760
Step-by-step explanation:
Answer:
112
Step-by-step explanation:
Total students = 840
Number of students surveyed = 60
Number of students of the 60 with siblings > 3 = 8
Number of students of the 840 with siblings > 3 = 840/60*8 = 112
The answer will be x squared over 4 plus y squared over 8 equals 1.
<h3> What is an ellipse?</h3>
An ellipse is an oval shape geometry having two focuses and the curve is equidistant from the focus.
The general equation of the ellipse is given as;
(x²/a²) + (y²/b²) = 1
The coordinates of a foci are: (±c, 0) where;
c² = b² - a²
However, we know that equation of directrix is; x = ±a/e
Now, Directrix is given ±4
Thus, a/e = 4
a = 4e
We also know that c = ae from ellipse foci coordinates.
Thus, ae = 2
since ae = 2, then (4e)e = 2
4e² = 2
e² = 2/4
e = 1/2
Thus;
a = 4 × 1/2
a = 2
Since c² = b² - a²;
2² = b² - 2²
4 = b² - 4
b² = 8
From (x²/a²) + (y²/b²) = 1, we can put our values to get;
x²/4 + y²/8 = 1
Hence the answer will be x squared over 4 plus y squared over 8 equals 1.
To know more about an ellipse follow
brainly.com/question/16904744
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The answer is 3s squared over r to the 4th
it should look like a fraction with 3s squared as the numerator (on top) && r to the 4th as the denominator (on bottom)
hope this was helpful, math is my strength so post more if you need help!
For this we want to switch the sides to start out.
-3t + 6 < -3
Now we want to subtract 6 from both sides...
-3t + 6 - 6 < -3 - 6
Simplify it.
-3t < -9
Now we want to reverse the inequality and multiply both sides by -1
(-3t) (-1) > (-9)(-1)
Simplify yet again.
3t > 9
Divide both sides by 3 now.
3t/3 > 9/3
Now we can say that t > 3.
Hope this helps!
