Answer:
False B=1
Step-by-step explanation:
10b+18=28
Subtract 18 both sides.
10b=10
Divide 10 both sides.
b=1
Answer:
(x= -7 , y = -1) is the complete solution of the equation.
Step-by-step explanation:
The given equation is -7x - 5y = 54
Now, here substitute x = -7
So, we get
-7(-7) -5y = 54
or, 49 - 5y = 54
⇒ -5y = 54 - 49
or, -5y = 5
⇒ y = 5/(-5) = -1 , ⇒ y = -1
Hence, (x= -7 , y = -1) is the complete solution of the equation.
Answer:
1,3,5,6
Step-by-step explanation:
Answer:
1001.66 in²
Step-by-step explanation:
The following data were obtained from the question:
Pi (π) = 3.14
Slant height (l) = 18 in
Diameter (d) = 22 in
Surface Area (SA) =.?
Next, we shall determine the radius of the cone. This can be obtained as follow:
Diameter (d) = 22 in
Radius (r) =.?
Radius = diameter /2
Radius = 22/2
Radius (r) = 11 in.
Finally, we determined the surface area of the cone as follow:
Pi (π) = 3.14
Slant height (l) = 18 in
Radius (r) = 11 in.
Surface Area (SA) =.?
SA = πr² + πrl
SA = (3.14 × 11²)+ (3.14 × 11 × 18)
SA = (3.14 × 121) + 621.72
SA = 379.94 + 621.72
SA = 1001.66 in²
Therefore, the surface area of the cone is 1001.66 in²