Answer:
52
Step-by-step explanation:
Total Number of students :
Stage 3 : 380
Stage 4 : 240
Stage 5 : 110
Total = (380 + 240 + 110) = 730
Number of samples required = 100
Number of key stage 3 students required :
(Key stage 3 / total) * number of samples
(380 / 730) * 100
= 0.5205479 * 100
= 52.0547
= 52
Answer:
This is the answer of your question .☺☺
Step-by-step explanation:
y+3=4(x-4)
y+3 =4x-16
0=4x-y-19
Equation of the line is 4x-y-19
As slope is 4
Subtract the given score x from the mean µ and divide it by the standard deviation σ :
z = (x - µ) / σ = (302 - 300) / 20 = 0.1
Answer:
B a b^2 c^5/ d^4
Step-by-step explanation:
a^-3 b^2 c^3 d^-3 / (a^-4 b^-2c^-2d)
separate the terms
a^-3/a^-4 * b^2/b^-2 * c^3 /c^-2 d^-3 /d
when dividing, we subtract the exponents
a^ (-3--4) b^(2--2) c^(3--2) d^(-3-1)
a^ (-3+4) b^(2+2) c^(3+2) d^(-3-1)
a^1 b^2 c^5 d^-4
negative exponent go to the denominator if they are in the numerator
a b^2 c^5/ d^4