6. Which of the following problems can be solved using the equation
x - 9= 15?
F. Allison is 9 years younger than her
sister Pam. Allison is 15 years old.
What is x, Pam's age?
G. David's portion of the bill is $9 more
than Jaleel's portion of the bill. If
Jaleel pays $9, find x, the amount in
dollars that David pays.
H. The sum of two numbers is 15. If one
of the numbers is 9, what is x, the
other number?
I. Calvin owns 15 CDs. If he gave 9 of
them to a friend, what is x, the
number of CDs he has left?
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H. line 6
I. line d
to 12 gives a sum

F

Step-by-step explanation:

x-9=15 will equal to 24 so x=24

if Allison is 15 but she is 9 years younger then Pam, Pam is x, so all you have to do is count up from 15, so 15+9 which equals 24 Pam is 24 making F the right choice

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

it would be:

c.parallelogram.