Can someone please answer my last question
1 answer:
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Answer:
Alexander
Step-by-step explanation:
Alexander has painted 2/3 of his room. Quinn has painted 2/5 of his. To find who has painted more, convert both fractions to have the same denominators. An easy way to do this is to multiply the numerator and denominator of one fraction by the denominator of the other, then do the same for the other fraction. So, · 5 =
and
· 3 =
.
>
. So, Alexander has painted more of his room than Quinn has.
Oooh, looks fun
ok
erm
we might want to know some properties
if
where a=a, then assume m=n
so
minus 17*2^x both sides
use u subsitution, u=2ˣ
solve
or
ac method
2 times 8=16
what 2 number multiply to get -17 and add to get 16
-16 and -1
2u²-1u-16u+8=0
(2u²-1u)+(-16u+8)=0
u(2u-1)+(-8)(2u-1)=0
(u-8)(2u-1)+0
u-8=0
u=8
2u-1=0
2u=1
u=1/2
now
u=2ˣ
8=2ˣ
3=x
and
-1=x
x=-1 and 3
neat problem
ok
erm
we might want to know some properties
if
so
minus 17*2^x both sides
use u subsitution, u=2ˣ
solve
or
ac method
2 times 8=16
what 2 number multiply to get -17 and add to get 16
-16 and -1
2u²-1u-16u+8=0
(2u²-1u)+(-16u+8)=0
u(2u-1)+(-8)(2u-1)=0
(u-8)(2u-1)+0
u-8=0
u=8
2u-1=0
2u=1
u=1/2
now
u=2ˣ
8=2ˣ
3=x
and
-1=x
x=-1 and 3
neat problem