Answer:
Step-by-step explanation:
25%=40
25x4=100%
40x4=160 students
Answer:
D) 5.52
Step-by-step explanation:
Answer:
A, D, E
Step-by-step explanation:
The ratio height : base is ...
... 2.5 : 1.6
... = 25 : 16
... = 1.5625 : 1
You can eliminate the bogus answers B and C because ...
... B: the numbers are too close together. The larger would need to be near 13 for the smaller one to be 9.
... C: the base is larger than the height, so the ratio is less than 1, not greater than 1.
_____
<em>Comments on other answers</em>
A: the scale factor is 1.1
D. the scale factor is 0.5
E. the scale factor is 0.8
The square root of 14 rounded to the nearest hundredth without using the calculator can be done this way. Follow these steps:
<span>1. Guess
2. Divide
<span>3. Average
</span></span>
GUESS.
1. Make good guess. We'll just use 2
DIVIDE.
2. Divide 14 by our guess of 2 = 7.
AVERAGE.
3. Average 7 and 2: (7+2)/2 = 4.5
Here, we repeat step 2 using 7 as our new guess, 4.5
2. 14/4.5 = 3.1
3. (3.1 + 4.5)/2 = 3.8
<span>
2. 14/3.8 = 3.7
3. (3.7 + 3.3)/2 = 3.5
2. 14/3.5 = 4
3. (3.5 + 4)/2 = 3.75
2. 14/3.75 = 3.7
3. (3.75 + 3.7)/2 = 3.725
so on and so forth until the pattern remains in 3.7</span>
