Answer:
5,252
Step-by-step explanation:
Let the number of boys present be b and the number of girls present be g
Now we are told these numbers are equal. This means b = g
Furthermore, if 1313 girls leave, the number of boys remaining would be twice the number of girls.
Mathematically, this can be expressed as follows:
b/(g-1313) = 2
b = 2(g-1313)
b = 2g - 2626
b + 2626 = 2g
We know that b = g from the initial equation, substituting this here yields:
g + 2626 = 2g
g = 2626
Since b = g, b = 2626 also
Total number of students = 2626 + 2626 = 5,252
For
(x-h)^2=4p(y-k)
vertex=(h,k)
p=vertical distance from vertex to directix
when p is negative, the directix is above the vertex
when p is positive, the directix is below the vertex
(x-2)^2=1/4(y+3)
(x-2)^2=4(1/16)(y+3)
p=1/16
it's positive so we know directix is below vertex
vertex is (2,-3)
go 1/16 down
-3-1/16=-48/16-1/16=-49/16
directix is y=-49/16 aka y=-3.0625
Answer:
The answer is Y+20> -30
Step-by-step explanation:
I took the test
Answer:
The score of 271.2 on a test for which xbar = 240 and s = 24 has a higher relative position than a score of 63.6 on a test for which xbar = 60 and s = 6.
Step-by-step explanation:
Standardized score, z = (x - xbar)/s
xbar = mean, s = standard deviation.
For the first test, x = 271.2, xbar = 240, s = 24
z = (271.2 - 240)/24 = 1.3
For the second test, x = 63.6, xbar = 60, s = 6
z = (63.6 - 60)/6 = 0.6
The standardized score for the first test is more than double of the second test, hence, the score from the first test has the higher relative position.
Hope this Helps!!!
