(x+13)*(x-7)=0
Split into possible cases :
________________________
x+13=0
x-7=0
Solve the equations:
________________________
x= -13
x= 7
Final solution :
Answer:
66
Step-by-step explanation:
36x4=144
36x3=78
144-78=66
SOLUTION:
If it takes 5 sewing machines 5 minutes to make 5 shirts, then that means:
100 machines will make 100 shirts in 5 minutes as well.
Hope this helps! :)
Have a lovely day! <3
Answer:
Step-by-step explanation:
y-x=0.7
y=x+0.7, so lets plug in that into the expressions instead of y
1)
(y-x)=
x+0.7-x=
x+0.7+(-x)=
x+(-x)+0.7=
x-x+0.7=
0.7
2)
(x-(x+0.7))/((x+0.7)-x)=
(x-x+0.7)/(x+0.7-x)=
(x-x+0.7)/(x+0.7+(-x))=
(x-x+0.7)/(x+0.7+(-x))=
(x-x+0.7)/(x+(-x)+0.7)=
(x-x+0.7)/(x-x+0.7)=
0.7/0.7=
1
Answer:
(a)
(b)
Step-by-step explanation:
The sum of the angles inside a triangle must be 180°, but from the right angle we already have 90°, so the sum of the two acute angles is 90°, then:
Let 
be the length of the shadow and 
the height of the three, so tan(35) is
Solving that last equation for h:
