9514 1404 393
Answer:
B. 5x−(−4x−6)=10
Step-by-step explanation:
The first equation gives an expression for y:
y = -4x -6
When that is used in the second equation, the result is ...
5x -y = 10
5x -(-4x -6) = 10 . . . . . . after substituting; matches B
Answer:
The answer is letter A and letter F.
Step-by-step explanation:
The question is asking if any of these choices are less than 300 centimeters. To find this out, first, you have to convert the meters to centimeters, to make it easier. (1 centimeter is equal to 0.01 meters) Multiply the meters by 100. For example 1.8m x 100 = 180cm. Do the rest for the other meters and then add them to the centimeters. Example: 180cm + 110cm = 290cm, which is less than 300cm.
36P2
smaller example: say 4 people are running for office, A,B,C, and D
first way: A is prez, B is vice
second way: A is prez, C is vice
Let;'smakeit simpler
A, B
A,C
A, D
B, A
B, C
B, D
C, A
... get it?
Now we don't wantto do that with 36 people so we do some math
Let's say we order four people; A, B,C, D
at first we have 4 choices for 1st. Once we pick a 1st, we have 3 to choose from. 4 1stpicks, from that there can be 3 2nd picks, so thetotal so far is 4*3. Once 2nd is picked, there are 2 choices for 3rd; 4*3*2. And only one choice for the lastplace; 4*3*2*1
For 36 people, we have 36 choices for prez, that leaved 35 choices for vice. but here, thank goodness, we are only picking two places; prez and vice. So we can stop there. You shoid be able to figure out what to do based on the example I gave
List the numbers from lease to greatest:
4 5 8 9 10
Find the number in the middle .
Since there are 5 numbers, the 3rd one is the median, which would be 8.
