Answer:
34 dimes
19 quarters
Step-by-step explanation:
815=25x+10y
-1325=-25x+-25y
-510=-15y
510=15y
510÷15=y
34=y
53-34=x
19=x
Answer:
f^-1 (x)=1/7x
Step-by-step explanation:
f(x) = 7x
y=7x x=7y
y=x/7
y=1/7x
f^-1 (x)=1/7x
Linear means that the y values go up in a fixed increment, k.
In the first one, you see that 3+4=7, 7+4=11, and so on, so you can immediately tell that it's linear.
The second one goes 3+5=8, then 8+7=15, then 15+6=21, which aren't the same numbers.
The third increases and decreases, so it's not linear.
The fourth goes 3+6=9, then 9+18=27, which you can immediately tell is not linear.
Therefore, the only linear table would be the first one.
Answer:
5 can go into 20 numbers between 1-100 and 8 can go into 12 numbers between 1-100
So, 32
This is a simple equation:
x - 7 < 14
x < 14 + 7
x < 21
→ Many people think that because there is not "=" sign they don't flip the sign of what in this case is -7. But actually, the symbols "<" and ">" act as the equal sign. This rule doesn't apply to positive number, only negative.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)
