Answer:
it is c
Step-by-step explanation:
Some answers include: 8/6, 12/9, 20/15.
Answer:
a) (2+8)+9
b) (3+7)+5+4
c) (4+16)+2
d) (31+9)+4
Step-by-step explanation:
a) 2+9+8
2 and 8 add up to 10, so we regroup them in parentheses
(2+8)+9
b) 3 + 5 + 4 + 7
3 and 7 add up to 10, so we regroup them in parentheses
(3+7)+5+4
c) 4 + 2 + 16
4 and 16 add up to 20 which is a multiple of 10, so we regroup them in parentheses
(4+16)+2
d) 31 + 4 + 9
31 and 9 add up to 40 which is a multiple of 10, so we regroup them in parentheses
(31+9)+4
Answer:

Step-by-step explanation:
The probability of matching the number drawn on the gold ball is

The number of possible pairs of numbers from 1 to 53 is

Choosing 5 numbers, you are choosing 10 different pairs:

Therefore the probability of correctly matching the drawn pair is

Thus, the probability of winning (matching the pair AND the gold ball) is

Answer:
The mixture that is an equivalent ratio is:
1.5 white 2 blue
Step-by-step explanation:
a) Data and Calculations:
Mixtures of the same color because they are in equivalent ratios:
3 cups of white and 4 cups of blue: equivalent ratio = 0.75: 1 (75%) since 3/4 = 75%
6 cups of white and 8 cups of blue. equivalent ratio = 0.75: 1 (75%) since 6/8 = 75%
Other mixtures:
5 cups white 6 blue: equivalent ratio = 0.83: 1 (83%) since 5/6 = 83%
1 white 1 1/2 blue: equivalent ratio = 0.67: 1 (67%) since 1/1.5 = 67%
4 white 3 blue: equivalent ratio = 1: 75 (1.33%) since 4/3 = 1.33%
1.5 white 2 blue: equivalent ratio = 0.75: 1 (75%) since 1.5/2 = 75%
Therefore, the mixture with equivalent ratio as the initial mixtures is 1.5 while 2 blue.