Answer:
c
Step-by-step explanation:
21×43
=(20+1)×(40+3)
=800+40+60+3
3x - 5y = 18 over
-10x + 5y = 10
Add them because the 5y's have the right symbols for us to add
-7x = 28
Divide
x = -4
Now you can plug in -4 for x in one equation, I would use the first equation!
3(-4) - 5y = 18
-12 - 5y = 18
Add 12
-5y = 30
Divide
y = -6
Your solutions are going to be:
x = -4
y = -6
To check your work plug x and y into one equation:
3(-4) - 5(-6) = 18
-12 + 30 = 18
18 = 18
Since 18 does equal 18 you know that your solution's work!
Answer:
76%
Step-by-step explanation:
Do turn decimals into percentages you just gotta multiply by 100.
0.76×100=76
Answer:
77,786.251
Step-by-step explanation:
P/4 + pq
if p = 8 and q = 6 then...
Substitute 8 for p
8/4
Substitute 8 for p and 6 for a
8 x 6
So
8/4 + 8 X 6
2 + 48
= 50.
