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Semmy [17]
2 years ago
13

-4+(-10t)/0.5+15

Mathematics
1 answer:
ziro4ka [17]2 years ago
6 0
The answer is C because when you divide it out you get 6
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At noon, ship A is 180 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast is
weeeeeb [17]

Answer:

Step-by-step explanation:

Gotta love these motion  problems!!! This one  is especially tricky!  At noon, ship A is 180 km west of ship B.  If ship A is traveling east, it is closing its distance to ship B (if ship B didn't move).  But ship B is moving north at the same time.  We need to find the distance each can travel in 4 hours using the d = rt formula.  For ship A.  We know it's moving at 35 km/h, so in 4 hours it can move d = 35(4) which is 140 km.  Remember that is closing the distance to ship B.  So it is 180 - 140 directly south of ship B.  This problem will turn out to be a right triangle problem of sorts.  The distance of 40 km serves as the base of this right triangle.  

With ship B moving north at 25 km/hr, it can travel d = 25(4) which is 100 km.  This serves as the height of the triangle.  We are asked to find the rate at which the distance is changing 4 hours from their starting points.  We know how far each can travel in those 4 hours, so in order to find the rate of change (which is the same thing as the slope!), we take the height and divide it by the base because that is the same thing as taking the rise over the run.  100/40 is 10/4 which is a rate of change of 2.5 km/hr

5 0
2 years ago
0.25 r – 0.125 + 0.5 r = 0.5 + r . solve for r
Ivahew [28]
First, we need to get all of the r's on the same side.  To do this, we need to subtract "r" from both sides.

0.25r - 0.125 + 0.5r - r = 0.5 + r - r

0.25r - 0.125 +0.5r - r = 0.5

Now, we need to add like terms.

0.25r + 0.5r - r - 0.125 = 0.5

-0.25r - 0.125 = 0.5

Now, we need to get the "r" variable by itself.

-0.25r - 0.125 + 0.125 = 0.5 + 0.125

-0.25r = 0.625

Now, we divide both sides by -0.25

(-0.25r) / (-0.25) = 0.625 / (-0.25)

r = -2.5
6 0
3 years ago
Clare has $54 in her bank account. A store credits her account with a $10 refund. How much dose she have now in the bank
pickupchik [31]

Answer: She now has $64 in the bank.

Step-by-step explanation:

Amount of money in bank account = $54

amount refunded by a store = $10

Total amount of money in bank =Amount of money in bank account + amount refunded by a store= $54+ $10 =$64

4 0
3 years ago
Need help with thise 2 question
Lynna [10]
39/2÷3 i am pretty sure thats what you dp. you convert the mixed number into a fraction then divide it by three
4 0
2 years ago
Can somebody please help
Digiron [165]

i honestly don't know :-l

7 0
2 years ago
Read 2 more answers
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