Answer:
x=2 and y= -1
Step-by-step explanation:
substitute x value in equation 2
2(5y+7)+4y=0
10y+14+4y=0
14y = -14
y= -1
here,
x= 5(-1)+7
x= -5+7
x=2
The function is described by the rule

.
The inverse function

is such that

.
Thus, since

, we have

.
Equating the two ways we expressed

, we have:

.
Rearranging, we have:

.
Answer: first choice: p(x)=7x-2
Answer:
? = 14
Step-by-step explanation:
If ∆EFG ~ ∆CBA, we have the proportion
FG/FE = BA/BC . . . . . any pairs of corresponding sides will have the same ratio for similar triangles. (It is convenient to put the unknown in the numerator.)
?/18 = 21/27 . . . . . . filling in the given numbers
Multiplying by 18, we have ...
? = 18·21/27
? = 14
_____
If the triangles are not designated as being similar, the problem is unworkable.
Answer:ds
s
ds
dd
d
s
Step-by-step explanation: