Mathematics - 12 July 2007

Marlene rides her bike to her friend Jon's house and returns home by the same route. Marlne rides her bike at constant speeds of 6 mph when going uphill and 12 mph when going downhill. If her total time riding was 2 hours, how far is it to Jon's house?

Any help would be appreciated!

2007-07-12 05:14:34 · 7 answers · asked by ariahimar 2

25x^6+15x^5+2x^4

2007-07-12 05:12:34 · 3 answers · asked by Anonymous

Factor completely:

150-5s-5s^2

2007-07-12 04:58:14 · 3 answers · asked by Anonymous

2007-07-12 04:55:57 · 5 answers · asked by Rebecca D 1

x^2-7x=-10 ??? Isn't it prime???

2007-07-12 04:55:44 · 3 answers · asked by SadToday22 3

help solve for x

2007-07-12 04:47:41 · 5 answers · asked by Rebecca D 1

In isosceles triangle ABC , angle C is the vertex angle. If angle A=3x-6 and angle C=2x , find the measure of Angle B

24
46
48
66.

2007-07-12 04:35:50 · 9 answers · asked by Anonymous

2007-07-12 04:30:50 · 9 answers · asked by lindasalicea 1

Math proof that a limited time domain signal is infinite in the frequency domain & a limited band of frequencys signal that is infinite in freq domain, is unlimited in time domain. I suspect Fourier sereis and transforms are involved. Thax in advance.

2007-07-12 04:30:02 · 1 answers · asked by 037 G 6

there are 4 blue and 12 white marbles in a bag. how many white marbles must be added to the bag to make the probability of drawing a blue marble 1/6?

2007-07-12 04:20:32 · 8 answers · asked by gkjsfh f 1

Could you help me find the GCF using 3 method?

1. 36, 45
2. 18, 12, 36
3. 20, 26, 24

thank you.

2007-07-12 03:34:25 · 3 answers · asked by Scarlet 3

S(3dx/(xln5x)) (where S is the integration sign)

What to do? I know integration is "backwards differentiation" ... but how do you go about it with a division.

2007-07-12 03:33:35 · 4 answers · asked by Anonymous

2007-07-12 03:32:44 · 5 answers · asked by gfgfd g 1

i mean from which subject in math shall i start reading.can you give me the order of subjects in math.i cannot directly go to advanced topics from which topics should i start and end with

2007-07-12 03:09:02 · 9 answers · asked by Anonymous

If you take 15% off of $97 how much is that? I still havent learned how to do this in school, so could someone help me please? Thanks!

2007-07-12 02:59:02 · 10 answers · asked by Anonymous

I havent done math in 6 years and one of my employees is going to take a placement test I know the answer i dont know how to work it out
6 3/4 - 2 7/8

2007-07-12 02:58:27 · 8 answers · asked by Joesph B 4

1 what is the square root of a^2+b^2???
2 If 50 =square root of 3x and y = 2 x, find y

2007-07-12 02:48:11 · 6 answers · asked by Anonymous

how do you solve this?

2007-07-12 02:47:01 · 9 answers · asked by gfgfd g 1

Classify the triangle DEF with vertices D(1, 5), E(-3, 1), and F(-1, -3).
choices-
right
isosceles
scalene
equilateral

2007-07-12 02:38:15 · 3 answers · asked by Anonymous

Trying to settle an argument between a married couple!!!! Help before they go to divorce court!!!!!

2007-07-12 02:25:25 · 15 answers · asked by Kiddo 4

Hi, I've asked the question below last week and have received fantastic results, but I just don't understand them.

Prove that 43 ^ n + 83 x 92 ^ 3n – 1 is divisible by 7 for all positive integers n,

Can you please help by either:

Defining the following two answers into simpler terms, enough for a young teenager to understand:


Reduce mod 7: 43^n= 1^n=1mod7
83=6mod7 and 92^(3n-1) =(13*7+1)^(3n-1)=1^(3n-1)=1mod...

Plug these in : 1 + 6(1) =7mod 7. Therefore your expression
is divisible by 7 for all n.

or


43 to any power mod 7 always =1
92 to any power mod 7 always =1
83 mod 7 =6
so 1+1*6 is the mod of the whole expression for any n. Which is divisible by 7.

OR

Answer the question with a new answer, making it as simple as possible. Thanks.

2007-07-12 01:14:07 · 3 answers · asked by Elder Price 2

We're having an issue with this number here. Some say when you round 376 to 2 significant figures, it becomes 380. Is that for real? I think its 38, but because a lot of people say its 380, I'm getting quite confused. Pls. help!

2007-07-12 00:26:45 · 9 answers · asked by Anonymous