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Just find how far he travels in (3/4) hr

So .....  rate per hour x time = distance

(7 + 1/5) x (3/4) =

(36/5)(3/4) =  ????

Can you finish this???.....your answer will be in miles......

y = x - 1

To get the y intercept, let x = 0

y = 0 - 1  = -1   so the y intercept is ( 0, -1 )

To find the x intercept, let y = 0

0 = x - 1     add 1 to both sides

1 = x      so the x intercept is (1, 0 )

a. If the train travels at 60km/hr, it travels at 1 km/min.  So...it takes 45 min to go from A to B.

b. We can find the rate by dividing the Distance by the Time   ...   so ....

45km / 40 min  = 1.125 km/min = 1.1 km/min  (rounded)

Thanks for that detailed answer, saseflower........!!!!

(-6)+4n<70    add 6 to both sides

4n < 76         divide both sides by 4

n < 19

i am just going to assume that you dont know how to multiply, divide, add, and subtract with fractions?

multiplying fractions

just multiply accross example :

1/2 x 3/4

3/8

dividing fractions

to divide fractions you use the recipricle (switch the fraction around) and multiply example :

2/3 divided by 1/3

2/3 x 3/1

6/3

2

adding fractions

to add fractions you want to make sure the fractions youre adding all have the same denominator example :

1/2 + 1/4

multiply 1/2 by 2, to get the same denominator as 1/4

2/4 + 1/4

3/4

subtracting fractions

to subtract fractions you want to make sure the fractions all have the same denominators (like adding) also, if youre subtracting mixed numbers, when you borrow make sure to not add 10 the the numerator, but add the denominator instead (make sense?) example :

4 1/2 - 2 3/2

3 3/2 - 2 3/2

1

hope this helps!

15500 - 12% =

first find 12% of 15500

15500 x 0.12

now multiply

1860

subtract 1860 from 15500

15500 - 1860

now subtract

13640

and there's your answer!

P.S. for these just remember that you don't know what 12% of 15500 is, so you have to find it and then plug that number in for 12%

2/3 times 1/4

I personally like to put fractions inside paranthesis to indicate multiplication (*):

(2/3)(1/4) = ?

When you multiply two fractions together, multiply numerator (top) w/ numerator and denominator (bottom) w/ denominator:

(2/3)(1/4) = (2*1/3*4) = 2/12

We can divide the numerator and the denominater by the same number. I'll divide by two:

1/6

your welcome Melody!

Thank you Saseflower  

5x-(3x^2 + 9)=

5x - 3x^2 - 9 =

- 3x^2 +5x -9

it's fine i understand, Melody! i didnt really read anonymous's response so that's why i answered. thank you, it's so much fun to help people out

On the unit circle, the coordinates of a 270° angle are (0, -1).  

At this point x-value = 0, y-value = -1, r-value (the distance from the origin to the point) = 1.

sin = y/r          cos = x/r        tan = y/x        csc = r/y        sec = r/x        cot  =  x/y

sin(270°)  =  -1/1  =  -1                            csc(270°)  =  1/-1  =  -1

cos(270°)  =  0/1  =  0                              sec(270°)  =  1/0  =  undefined

tan(270°)  =  -1/0  =  undefined               cot(270°)  =  0/-1  =  0

since pi is an infinite number, you cant really find the square root of pi. i looked it up though, and i guess it's approximately 1.77245385091

I am sorry saseflower but I have whited out your answer.

This person can use the site calc just as good as you can.

And this type of rudeness (and laziness) is not to be rewarded.

I hope that you understand.  

I like that you have been so active on the forum.  You are a great asset to us.  

No. Here is one example of two linear expressions, each w/ an X-term, in which the sum has no X-term:

I: Y = 2X +3

II: Z = -2x +4

III: W = Y + Z = 7

We see that the X-terms cancel out.

The calc will give you an approximation but if you want an exact answer, it cannot be simplified because no squar e numbers go into 109

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I think I just saw a pop up where you were very rude to geno3141.

Geno did answer your question - he gave a very good answer.

If you do not know what buttons to press then say this POLITELY.

If you do know what buttons to press, GO AWAY AND STOP WASTING OUR TIME.

You owe Geno an appology!!

These are terms in a geometric sequence because:  18/54 = 1/3  and  6/18 = 1/3

The common ratio is  1/3.

To find the n^th term, you can use the formula:  t_n  =  a·r^n-1

[a = first term = 54; r = common ratio = 1/3; n is the number of the term that you want = 9]  

--->   t₉  =  54·(1/3)^9-1  =  54·(1/3)⁸  =  54/6561  =  2/243

What, you know what if you don't want to answer the question. Don't say Anthing

-10 ofc.

Generally, when you have any arithmetic question on the form a - b in which  b > a, yielding a negative answer, you can siplify it by this formula:

a - b  = - (b - a)

Ex:

74 - 96 ...Doing this the usual way often reqires using a calc. We try our li'l cheating:

74 - 96 = - (96 -74) = - 22 ...The ruse worked: This can easily be calculated w/o calc

Calculator time!