Answer:
A and B
Step-by-step explanation:
(x+p)(x+q)
x²+xq+px+pq
x²+(xq+px)+pq
where ( xq+px) =b
and p.q =c
A:
✔ –16 < –4
B:
✔ 40 > 8
C:
✔ –45 < 15
D:
✔ 35 > –20
Multiplying both sides of an inequality by a negative number
✔ reverses
the inequality symbol.
Answer:
exponent
Step-by-step explanation:
Answer:
8/3
hope this helps!!!
Step-by-step explanation:
1 3/5 = 8/5
1 1/5 = 6/5
8/5=6/5*1/2*h
6/10h=8/5
h=8/3
If we let Q be the number of quarters and N be number of nickels, this is the formula we would use:
[1] 25Q + 5N = 635 (using cents instead of dollars)
We also know something about Q and N.
[2] Q + N = 51
So multiply both sides of the second equation by 5. The reason we do this is because we're going to need to cancel out one of the variables (either Q or N) to solve for the other one. If we multiply times 5, we'll have 5N in both equations.
5Q + 5N = 255
Now we have two equations, and the second one can be subtracted from the first.
25Q + 5N = 635
-(5Q + 5N) = -255
---------------------
20Q = 380
so
Q = 19
There are 19 quarters.
And since there are 51 coins in all, 51-19 = 32 nickels.
