Answer:
84 students
Step-by-step explanation:
Let's suppose that 100% was last year's percentage of students.
100% = 80
1% = 80 ÷ 100 = 0.80
100 + 5 = 105% (This year)
0.80 x 105 = 84
There is another method to this called percentage increase, but I kind of forgot the formula. Hope this method is also correct for the question.
Answer:
anything below 136.5 or above 155.5
Step-by-step explanation:
the critical value from a Z distribution for the 99% confidence level is 2.576
so we just need to compute
146 + 2.576(34/sqrt(85))
and
146 + 2.576(34/sqrt(85))
<span><u><em>The correct answer is:</em></u>
B.
<u><em>Explanation:</em></u>
In order to find the appropriate equation for this example, we need to <u>find one that works for the first point (1, 56). </u>
This means when we put 1 in for n in the equation, we need to get 56 as an answer.
If you place 1 in for n in each of the equations, only B gives you 56.
f(n) = 56(0.5)</span>ⁿ⁻¹<span>,
f(n) = 56(0.5)</span>⁰<span>,
f(n) = 56(1),
f(n) = 56. </span>
Answer:
The area of the enlarged triangle is 
times the original area
Step-by-step explanation:
we know that
The scale factor is equal to divide the measurement of the length side of the enlarged triangle by the the measurement of the length of the corresponding side of the original triangle
In his problem
Let
x------> the length side of the original triangle
so
2x-----> is the length of the corresponding side of the enlarged triangle
-------> that means is increasing
The scale factor squared is equal to the ratio of the area of the enlarged triangle divided by the area of the original triangle
so
Let
m-------> the area of the enlarged triangle
n------> the area of the original triangle
r-------> scale factor
we have
substitute
therefore
The area of the enlarged triangle is times the original area
Kids in Africa got clean water from water pumps
they want them by 2010 so before then
in Africa
