Answer:
1. 6.4 meters of streamers left to make pompoms
2. He will be able to make 8 pompoms
Step-by-step explanation:
1. 
4 x 1.6 = 5.6 meters were used to make decorations.
Then we do 12 - 5.6 = 6.4
2. 
per one pompom it takes 0.8 meters of streamers. 
6.4 is the left over so we do
6.4 divided by 0.8 = 8 pompoms you can make
 
        
             
        
        
        
Solve for x by cross multiplying then isolating the variable:

                     cross multiply
15x=90                     Isolate the variable
x=6
Solve for y by cross multiplying then isolating the variable:

          cross multiply
9y=90               Isolate the variable
y=10
 
        
        
        
Answer:
No Solution
Step-by-step explanation:
There are no values of  b
 that make the equation true.
No solution
 
        
             
        
        
        
I think b not sure it’s the only one that makes sense
        
             
        
        
        
Answer:
1.) k = 5
2.) n = -20
3.) p = -13
4.) m = -450
5.) b = -38
6.) n = -24
7.) x = 21
8.) x = 12
9.) b = -2
10.) b = 5
Step-by-step explanation:
To solve all equations, do the reciprocal, or opposite of what is being done. For example, if a number and a variable are being multiplied, you would divide by the number to solve.
1.) 55 = 11k
(11 and k are being multiplied, so you would divide)
Divide by 11 on both sides:
55 = 11k
/11     /11
5 = k
2.) Add 15 on both sides:
n - 15 = -35
    +15    +15
n = -20
3.) Divide by -6 on both sides:
78 = -6p
/-6    /-6
-13 = p
4.) Multiply by 18 on both sides:
m/18 = -25
18(m/18) = (-25)18
m = -450
5.) Add 20 on both sides:
18 = -20 - b
+20  +20
38 = -b
Divide by -1 on both sides:
38 = -b
/-1     /-1
-38 = b
6.) Subtract 12 on both sides:
12 + n/4 = 6
-12            -12
n/4 = -6
Multiply by 4 on both sides:
4(n/4) = (-6)4
n = -24
7.) Multiply by 2 on both sides:
2(-7 + x/2) = (7)2
-7 + x = 14
Add 7 on both sides:
-7 + x = 14
+7         +7
x = 21
8.) Subtract 2 on both sides:
-4x + 2 = -22
       -2     -2
-4x = -24
Divide by -4 on both sides:
-4x = -24
/-4     /-4
x = 12
9.) Add 9 on both sides:
7 = -8b - 9
+9         +9
16 = -8b
Divide by -8 on both sides:
16 = -8b
/-8   /-8
-2 = b
10.) Multiply by -3 on both sides:
-3(b - 14/-3) = (3)-3
b - 14 = -9
Add 14 on both sides:
b - 14 = -9
   +14    +14
b = 5