Answer:
136
Step-by-step explanation
multiply 4 by 31 and add 20
<span> y = |x-2|+4
it is a negative 2 because you do the inverse</span>
Answer:
GCF: 20
Step-by-step explanation:
The thing you want to do is factor both numbers down to their lowest primes.
40:2 * 2 * 2 * 5
60:2 * 2 * 5 * 3
Now underline what is in both sets of primes. I'll bold them. The number that is bolded comes from 2 * 2 * 5 which is 20
The highest common factor is 20
Answer:
1. -9xy
2. 6ab
3.-8mn
4. 17nx
Step-by-step explanation:
Answer:
There are 
different ways to choose 4 screws such that 2 have a Phillips head and 2 have a slotted head.
Step-by-step explanation:
If 4 screws must be chosen so that 2 have a Phillips head and 2 have a slotted head, then you have to choose 2 screws with a Phillips head from 4 screws with a Phillips head and 2 screws with a slotted head from 4 screws with a slotted head.
You can choose 2 screws with a Phillips head from 4 screws with a Phillips head in
different ways.
You can choose 2 screws with a slotted head from 4 screws with a slotted head in
different ways.
In total there are different ways to choose 4 screws such that 2 have a Phillips head and 2 have a slotted head.
