Answer:
54
Step-by-step explanation:
multiply by 1.8 and add 32
12*1.8=21.6
21.6+32=53.6
53.6 rounded = 54
-2f-5=-e
then you divide by the -1 to get the positive e
e=2f+5
Answer:
these problems are always tough b/c they want you to translate normal thinking into math jargon :D soooo....
Step-by-step explanation:
they use the point slope formula... which looks like
y =
= m(x -
)
where (
,
) are the x , y coordinates of some point you're given.. sooo
they give us two points.. so we can put either one of those into the formula.. but we also have to find m.... or the slope ... to find m.. use the slope equation of
m = (
-
) / (
-
)
call either point P1 and P2 ... i'll pick the top point as P1 and bottom as P2
then
m = ( -3 -1 ) / ( 1 - 3 )
m = -4 / -2
m = 2 ( yay :) )
now use either point and plug it into the point slope formula, i'll use P1
y - 1 = 2(x-3) ( this is the answer they are looking for )
This is basically the same as the other question you posted, just with different variables!! make another proportion
252 dollars/18 hours = x dollars/7 hours
252/18 is 14, so
14 = x dollars/7 hours
multiply both sides by 7 to isolate x
98 dollars = x
so john will make $98 for 7 hours of work
Twice 2 to the 30-th power is
2*2³⁰ = 2¹*2³⁰ = 2³¹
For very large numbers, it is the usual practice to use scientific notation.
From the calculator, obtain
2³¹ = 2.1475 x 10⁹
Answer: 2.1475 x 10⁹