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y=-2.5x+8.5

slope-intercept form is good?

No you are disgusting your so nasty

4÷ 8/9− 1/2 =

\({\color{blue}4:\frac{8}{9}-\frac{1}{2}=4\times\frac{9}{8}-\frac{1}{2}=\frac{9}{2}-\frac{1}{2}=4}\) !

what is 8.25% of 160

\({\color{blue}160\times 8.25 \% = 160\times \frac{8.25}{100} = 13.2}\)    !

th@ answer be 8

60 or 120 degrees

=  sinx / cosx

x = slow train speed (mph)

x+20 = faster train

Slow train travels  1.25 hours for a distance of   1.25 x

Faster train leaves an hour later and travels only .25 hour so distance is  .25(x+20)

The tow distances ae equal, we are told

.25(x+20) = 1.25x

.25x + 5 = 1.25x

5 mph = x = slower train        FYI: Faster train is 20 + x =  20 + 5 = 25  mph 

5*10 = 50

37 * 19 = 703    use the calculator......

Oh man! I completely missed that part! Good job guest!

Enter the top number first, then use / , or the division key, followed by bottom number. E.G. 1/4. Enter 1, then / and then 4.

Use the small "e" in the top row.

In addition to the identity you state, there are two others.

Using your notation,

Asin (x) - Bcos (x) = Csin (x - v)

and

Acos (x) - Bsin (x) = Ccos (x + v ).

It was this last one that was chosen in order that the signs matched up.

Incidently, if the rhs of Melody's equation is known to be negative, (it depends on the value of c),  it might be better to switch the left and right hand sides. In that case we would use the identity for 

Asin (x) - Bcos(x).

Tiggsy

It will be - 60 degrees.

Figure out the number of days between Jan. 1 and, say, Sept. 1, and divide $1,000 by that number of days. This is assuming that you get no interest on your savings. If you get interest, then you need to save a bit less every day.

18=3*6

63=3*21

so it can simplify as 6/21

6=3*2

21=3*7

so it can simplify as 2/7

\(\frac{8}{976} = \frac{1}{122} = 0.0081967213114754 \approx 0.0082\)

They can be as big as you want them to.

Look it all up in your textbook! It is ALL explained there.