Answer:
confusing activities with accomplishments
Step-by-step explanation:
4 ft because if there all doubled it means there all two and area is length times width so 2 times 2 is 4
Answer:
H0: p(1980) = p(2010) ; H1 : P(1980) > P(2010)
0.02
Step-by-step explanation:
Given that:
Sample size in both 1980 and 2010 = 1000 samples :
Proportion in favor :
P(1980) = 0.66
P(2010) = 0.64
To test the hypothesis :
Null hypothesis :
Proportion in favor are the same in both years
Null hypothesis = H0 = p(1980) = p(2010)
Alternative hypothesis :
Proportion in favor in 1980 is greater than that in 2010
Alternative hypothesis = H1 : P(1980) > P(2010)
The sample statistic :
P(1980) - p(2010)
0.66 - 0.64
= 0.02
Answer:
27 units²
Step-by-step explanation:
Cut the figure into a 8 by 3 rectangle and triangle.
The area of the rectangle is 8*3 or 24
The area of the triangle is 3 using the formula 1/2bh where the base and height are 3.
Adding those 2 areas together 24+3 will equal 27
Answer:
B
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
here (h, k) = (3, - 20), thus
y = a(x - 3)² - 20
To find a substitute (7, 12) into the equation
12 = a(7 - 3)² - 20
12 = 16a - 20 ( add 20 to both sides )
32 = 16a ( divide both sides by 16 )
2 = a, thus
y = 2(x - 3)² - 20 ← expand using FOIL
y = 2(x² - 6x + 9) - 20 ← distribute and simplify
y = 2x² - 12x + 18 - 20
y = 2x² - 12x - 2 → B
