Bye doing the pemdas equation the at 3x + -5 you get the answer
Answer:
The answer to your question is: a folder cost $1.92
Step-by-step explanation:
Haley bought 8 pencils and 3 folders spent 10.39
Nicole bought 5 pencils and 4 folders spent 10.51
Folder = ?
pencil = x
folder = y
Equations
8x + 3 y = 10.39 (1)
5x + 4 y = 10.51 (2)
Solve these equations
4 ( 8x + 3 y = 10.39 ) 32x + 12 y = 41.46
-3 ( 5x + 4 y = 10.51) -15x - 12y =-31.53
17 x 0 = 9.93
x = 9.93 / 17
x = 0.58 pencil
8(0.58) + 3y = 10.39
4.64 + 3y = 10.39
3y = 10.39 - 4.64
3y = 5.75
y = 5.75 / 3
y = 1.92 folder
4 1/4 is equivalent to 4.25 so you can just multiply 4.25*8 and you'll get 34 which is c.
Answer:
68
Step-by-step explanation:
Find the scale Factor:
What do you do to 10 to make it 4?
Divide by 2.5 or Multiply by 0.4
Since, Scale factors are always written as multiplications, use x 0.4
Find the area of the smaller pentagon:
Value 1 x Scale Factor = Area of larger pentagon x 0.4 = 68.8 ≈ 68
Hope this helps
