Answer: f
= x
=
−
3
x
+
1
=
x
=
1
4
g
=
x
2
+
2
x
−
5f(
x
)
=
f
(
x
)
Step-by-step explanation:
Answer:
The answer is D. 14
Step-by-step explanation:
If you were to plug in 14 for x, it would look something like this:
= 
Solve 14-4
=
if you were to multiply 5 and 7 by 2, you would get
.
This makes the equation true, because
10/14 does equal itself (10/14)
Have a nice day!
Answer:
1. is 25
2. I think this one is 25 too?
Step-by-step explanation:
im working on the second
Answer:
6kg pure copper and 30 kg 10% copper was mixed to give 36kg of 25% alloy
Step-by-step explanation:
Here, we want to produce 36 kg of 25% alloy
Let the Pure copper be x kg while 10% alloy be y kg
Pure copper is simply 100% copper
Thus;
x + y = 36 •••••(i)
Then;
100% of x + 10% of y = 25% of 36
= x + 0.1y = 9 •••••• ii)
From i x = 36-y
from ii, x = 9-0.1y
Equate both x
36-y = 9-0.1y
36-9 = 0.1y + y
0.9y = 27
y = 27/0.9
y = 30
x = 36-y
x = 36-30
x = 6 kg
3. The answer is 18 because 12➗4= 3 so 6*3=18
