Area of square = a^2
but
a^2 = d^2 / 2 = x^2 / 2
so area = x^2/2
answer is A. x^2 / 2 or 1/2 (x)^2
Answer:
x^2+4 = 36
Step-by-step explanation:
the square of the sum of a number and 4
x^2+4
is means equals
x^2+4 = 36
2x+17 4x-1 6x+9 17+9-1=25
Single out the x and add 2,4,and six and you get
12x+25
Answer:
Step-by-step explanation:
Using the proportion test
Null hypothesis: p <= 0.22
Alternative hypothesis: p > 0.22
Using the formula
z score = p - P /√ (P(1-P)/n)
Where p is 74/200= 0.37, P = 0.22, n = 200.
0.37-0.22 / √(0.22(1-0.22)/200)
0.15 / √(0.22(0.78)/200)
0.15 / √(0.1716/200)
0.15/ √0.000858
0.15 / 0.02929
= 5.1212
To help arrive at a conclusion, we have to find the p value, using a p value calculator at the 0.05 level of significant, the p value is less than 0.00001... Thus we would reject the null as there is sufficient statistical evidence to prove that the proportion is higher than that reported by the polling organization.
