Step-by-step explanation:
f(x)=8(5x-2)
interchanging the role of x&y
x=8(5y-2)
- x=40y-16
- x+16=401y
- y=(x+16)/40
f-1(x)=(x+16)/10
<h3>stay safe healthy and happy.</h3>
Answer:
2/4-5
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
The opposite angles of an inscribed quadrilateral are supplementary, thus
5x + 20 + 7x - 8 = 180
12x + 12 = 180 ( subtract 12 from both sides )
12x = 168 ( divide both sides by 12 )
x = 14
Thus
∠ RQP = 10x = 10(14) = 140°
∠PSR = 180° - 140° = 40° ( opposite angles are supplementary )
∠ SRQ = 7X - 8 = 7(14) - 8 = 98 - 8 = 90°
∠ QPS = 5x + 20 = 5(14) + 20 = 70 + 20 = 90°
Answer:
C
Step-by-step explanation:
Triangle CGF and triangle CED are similar. Hence, the ratio of their corresponding sides are equal. Thus we can write:

<em>We can now cross multiply and solve for CD:</em>

Since GF is a midsegment of CDE, CD is double of CF. So we can write:

<em>By using quadratic formula
and with a=3, b= -5.2, and c= -1.6, we find the value of x to be:</em>

<em>Since the expression for CD is
, we plug in
into this expression to find value of CD:</em>

The correct answer is C