Answer:
B) 
Step-by-step explanation:
1. First, we have to know that two negatives equal positive.
2. Given the information above, 
can simplify to 
.
3. Let's go through each answer choice and see which one also simplifies to .
A:
B:
Therefore, the answer is B) .
Answer:
The relation is 
Step-by-step explanation:
x and y are directly proportional:
This means that the equation is given by:
In which a is the multiplier that relates these two variables.
x= -4, y =6
We use this to find a. So
So
The relation is
Answer:
x=5
Step-by-step explanation:
-3x+7=-8
Bring 7 to the other side, it becomes negative
-3x=-8-7
Signs are same on rhs so u add
-3x = -8+-7= -15
Bring -3 to the other side n divide
therefore,
x=-15/-3
= +5 (two negatives become positive)
Hope it helps!
Answer:
The LCM of 9, 12, and 24, is <em>72. </em>
Step-by-step explanation:
To find the answer you must figure out the factors of <em>each number</em>, and see which factor has the <em>same number.</em>
<u><em>Factors of 9: </em></u> <u><em>Factors of 12:</em></u><em> </em><u><em>Factors of 24: </em></u>
<em> 9 12 24</em>
<em> 18 24 48</em>
<em> 27 36 72</em>
<em> 36 48</em>
<em> 45 60</em>
<em> 54 72</em>
<em> 63</em>
<em> 72</em>
When we look at all these factors, none of them have the same number <em>except 72.</em> Since <em>all</em> of these factors have <em>72 in them</em>, this is the<em> </em>LCM of 9, 12, and 24.
solution:
A and B have 26 cards which are 7 spades and 19 non spades.
C and D have 6 spades and 20 non spades.
13 cards are chosen randomly from 26 cards (6 spades and 20 non spades)
probability of choosing exactly 4 spades is given by
(6 / 26) × (5/ 25) × (4/24) × (3 / 23) = 3/2990
