Answer:negative case : 2.5x - 6.8 = -12.9
positive case : 2.5 - 6.8 = 12.9
step 2 : 6.8
step 3 : dividing by 2.5
step 4 : x = 7.88
Step-by-step explanation:
Answer:
40/3 cm
Step-by-step explanation:
FE : DC
1 : 3
Since area ABCD = 400
s² = 400
s = 20
FE = ⅓(20) = 20/3 cm
AM = DC - FE
AM = 20 - 20/3 = 40/3
Answer:
no
Step-by-step explanation:
14:8 = 14/8 = 7/4
28:10 = 28/10 = 14/5
Since the fractions are not equal, it is not a proportion.
Answer: no
Answer:
-6
Step-by-step explanation:
-8 - (-2)
A negative negative is a positive
-8+2
-6
B is the answer
Because A and C could not be since the set have 4 results
D could not be because f(4)=. 12-5=7 not -7
