The total they paid is $23 because 1 of them bought 4 cookies for $2 each so we multiply 4 and 2 we will get $8 and the other girl bought 5 cookies for $3 each so we multiply 5 and 3 and that is $15 so we add $15 and $8 and we will end up with $23
Answer:
its 12 feet
Step-by-step explanation:
Answer:
B. 
Step-by-step explanation:
Total surface area of the square pyramid
= 4 times the area of one triangle + Area of square
Answer:
y = -3
Step-by-step explanation:
To solve the exercirses which are shown in the figure attached, you must follow the proccedure below:
7) (x)=x³-6x²+8x
(x)=x(x³-6x²+8)
(x)=(x-4)(x-2)x
The lenght is: x
The height is= (x-4)
8) √(2x+8)-6=4
1. You need to clear the variable "x". Then:
√(2x+8)=4+6
√(2x+8)=10
(√2x+8)²=10²
2x+8=100
2x=100-8
x=92/2
x=46
9) l4x+3l=9+2x
1. To solve the left member, you must evaluate two cases: it could be positive,or negative. Then:
2. Negative:
l4x+3l=9+2x
-4x-3=9+2x
-4x-2x=9+3
-6x=12
x=12/-6
x=-2
3. Positive:
l4x+3l=9+2x
4x+3=9+2x
4x-2x=9-3
2x=6
x=6/2
x=3
