Answer:
Area of triangle = 1/2*b*h
Answer:
B) 1/2 barrel/hour
Step-by-step explanation:
1/3 divided by 2/3 = 1/3 * 3/2 = (1*3)/(3*2) = 3/6 = 1/2, therefore the correct unit rate is B) 1/2 barrel/hour
Answer:
(- 9, - 9)
Step-by-step explanation:
Given the 2 equations
3x - 4y = 9 → (1)
- 3x + 2y = 9 → (2)
Adding (1) and (2) will eliminate the term in x
(1) + (2) term by term
(3x - 3x) + (- 4y + 2y) = (9 + 9)
0 - 2y = 18
- 2y = 18 ( divide both sides by - 2 )
y = - 9
Substitute y = - 9 into (1) or (2) and evaluate for x
(1) → 3x + 36 = 9 ( subtract 36 from both sides )
3x = - 27 ( divide both sides by 3 )
x = - 9
Solution is (- 9, - 9)
Answer:
c) 0.181.
Step-by-step explanation:
There is a common practice in statistics that we use the estimation from a large sample and expands it to the population.
Suppose i ask 1000 people who reside in Buffalo, New York, if they are Buffalo Bills fans. Suppose 900 say they are. So i can say that 90% of all residents of Buffalo are Bills fans.
In this problem, we have that:
On the first day of class, she counts 105 students enrolled, of which 19 are repeating the class. The university enrolls 15,000 students.An estimate of the population proportion repeating the class is given by:
The proportion of 19 of 105 is expanded to the 15,000 students.
19/105 = 0.181
So the correct answer is:
c) 0.181.
