Step-by-step explanation:
EF = 4x - 15
FG = 3x - 7
EG = EF + FG = 20
so,
4x - 15 + 3x - 7 = 20
7x - 22 = 20
7x = 42
x = 6
EF = 4×6 - 15 = 9
FG = 3×6 - 7 = 11
Answer: A. -5/4
Step-by-step explanation:
Answer: 5F < 5( X + x )
Step-by-step explanation:
Let each finger = F and
The index finger = X
The shortest index finger = x
the combined length of all 5 of her fingers on one hand should be less than 5 times the length of index finger
From the statement above, we get
5F < 5X
Tessa add the second shortest index finger.
That is
5F < 5( X +x)
Use the quadratic formula .
x^2-2x+11=0
a=1
b=-2
c=11
x=-2+- (-2)^2-4*1*11 divided by 2
x=2+- the square root of -40 divided by 2
There is no real solutions
