(you flip 1/4 and it went a moltiplication and semplify 4 with 4 (4:4=1), multiply -3 * 1 = -3
-3/4 : 1/4 =
-3/4 * 4/1 =
-3 * 1 =
-3
The number of combinations of 10 different things taken 4 at a time is:

The answer is: 210
Here's link
to the answer:
bit.
ly/3gVQKw3
Answer:
625
Step-by-step explanation:
basically, half of 500 is 250 halve that you get a quater of 500 (25%)
500+125=625
Answer: a = 3
Step-by-step explanation: when you multiply 6 by -3 you get -18 and if you add 16 you get -2
so the slope is -3 and the y-intercept is 16
so a*-3 + 16 = 7
by subtracting 16 on both sides you get
-3a = -9
and to get a by itself you divide -3 on both sides
a = -9/-3
a= 9/3
a = 3