Answer:
4 sophomore girls .
Step-by-step explanation:
If a student's gender and class are to be independent when a student is selected at random, two conditions must be met:
n° boys = n° girls
n° freshmen = n° sophomore
Currently, there are 10 boys and 6 girls, thus 4 girls must join.
Currently, there are 10 freshmen and 6 sophomores, thus 4 sophomores must join.
Therefore, 4 sophomore girls must join.
Answer:
10.9
Step-by-step explanation:
I just used a pyramid calculator online and inputed the base and height.
Here, Series: 750, ............... 1350
It's an A.P. where, a = 750 a(11) = 1350
We know, a(n) = a + (n - 1)d
1350 = 750 + (11 - 1)d
1350 - 750 = 10d
600/10 = d
d = 60
In short, Rate of change would be; $60 per year.
B.) y-y1 = m(x - x1)
y - 750 = 60(x - 1)
y - 750 = 60x - 60
y = 60x + 690
In short, Your Equation would be: 60x + 690
Hope this helps!
That is 22 and 21:
22 + 21 = 43
if we write equations to find them, we say, numbers are a and b, they are consecutive so:
b = a + 1
a + b = 43
we substitute one in the other equation:
a + (a + 1) = 43
2a = 42
a = 21
then
b = a + 1 = 21 + 1
b = 22
Answer:
Step-by-step explanation:
Kindly refer to the attached for the values labelled to the line XZ.
The point Y is in between XZ.
It can be clearly observed that XZ is made up of sum of two lines XY and YZ.
So, we can write:
XZ = XY + YZ ....... (1)
We are given the values of line segments:
XY = 4a
YZ = 9a and
XZ = 6a+24
To find: Value of variable 'a'.
Solution:
Putting all the values in equation (1):
So, value of variable is