Answer:
3x^2 - 3x + 18
Step-by-step explanation:
x*3x=3x^2
(x*6)+(-3*3x)=-3x
-3*6=-18
Let she work for x hours as carpenter !
so earned money = 20x
and for blacksmith she must work for 30-x hours
so earned money = (30-x) ×25
so putting in eqn;
20x+25(30-x) = 690
so, x= 60/5 = 12
so she works for carpenter for 12 hrs and 30-12= 18 hrs for blacksmith !!.....answer !!
Answer:
Either of the following square values:

Step-by-step explanation:
The three possible answers correspond to the square of the sides of the triangles via the Pythagorean theorem. And these are:

Answer:
Step-by-step explanation:
1. 4x + 5 = -7
4x = -12
x = -3
2. 9f - 11 = 4 + 14f
-5f - 11 = 4
-5f = 15
f = -3
Answer:
Can I get brainliest too im first?
Step-by-step explanation: