Step-by-step explanation:
so for this one u do

231 the times it by 2 for the both sides
231×2=462 cm2
hope this make sense :)
Answer:
C... 3
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
= AC × CB
= ( x + 9 ) 9
144 = 9x + 81
9x = 144 - 81
9x = 63
x = 63 ÷ 9
x = 7
X is 7 more than y
x>y then
difference betwen squares is 161 so
x=7+y
and
x²-y²=161
so
x=7+y
sub that for x in other equation
(7+y)²-y²=161
y²+14y+49-y²=161
14y+49=161
minus 49 both sides
14y=112
divide both sides by 14
y=8
sub back
x=7+y
x=7+8
x=15
the numbers are 15 and 8
The blanks should be:
<span>2 halves
</span><span>7 halves
</span><span>7 friends
This is because 3 and 1/2 is the same as the improper fraction of 7/2. </span>