i know its the frist or second one i did the test i am also in flvs :)
The answer is B maybe try it?
From this equation C°=[F°-32]÷1.8
F°=158×1.8 +32=316.4°
The answer is <span>b.3x + 15 = 55 - x
</span>
x - Jill's present age
y - dad's present age
<span>In 5 years, Dad will be three times as old as his daughter Jill will be then:
y + 5 = 3(x + 5)
</span><span>The sum of their present ages is 50:
x + y = 50
We have the system of two equations now:
</span>y + 5 = 3(x + 5)
x + y = 50
Let's rearrange the second equation:
If: x + y = 50
Then: y = 50 - x
Now, substitute y from the second equation (y = 50 - x) into the first one:
y + 5 = 3(x + 5)
50 - x + 5 = 3(x + 5)
50 + 5 - x = 3*x + 3*5
55 - x = 3x + 15
Rearrange it a bit:
3x + 15 = 55 - x
Therefore, the correct choice is b.
Convert to common denomenator (bottom number)
2 and 3
common denomenator is 2 times 3 or 6
multiply each by 1 or x/x where x=x to convert so
1/2 times 3/3=3/6
1/3 times 2/2=2/6
3/6-2/6=(3-2)/6=1/6
