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juin [17]
3 years ago
15

A train leaves at 15.42 and arrives at its destination at 16.56.

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
8 0

Answer:

284.2 KM/HR

Step-by-step explanation:

   16:56

   -15:42=1:24

S=D/T

S=103 km/ 7/5 hr

S=284.2 KM/HR

Tasya [4]3 years ago
5 0

Answer:

90/1.5=60 mph

Step-by-step explanation:

I assume that the train is traveling at constant speed.

Between 12:45 pm and 2:15 pm the train has traveled 180-90=90 miles. So 90 miles in 1.5 hours which means that its speed is 90/1.5=60 mph

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3 years ago
F(x) =2x + 5 and g(x)=5, find(fg)(x)
irakobra [83]

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<u>Step-by-step explanation:</u>

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2 years ago
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WITCHER [35]

Answer:

10.375

Step-by-step explanation:

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3 years ago
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If the average of 2b and 4b is 12, what is the value of b?
rusak2 [61]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
In ΔABC, AC = BC, CD ⊥ AB with D ∈ AB , AB = 4 in, and CD = sqrt3 in. Find AC.
amid [387]
Check the picture below.

segments AC and BC are equal, that means that ABC is an isosceles triangle, with twin sides.  Now the twin sides make twin angles on the opposite side, namely the angles at A and B are twins.

if the angles at A and B are twins, and CD is ⟂ to AB, there's only one possibility that can happen, and is if CD is an angle bisector at C.

an angle bisector like CD with twin angles on each side, will cut AB in two equal halves, therefore, if AB = 4, then AD = 2 and DB = 2.

8 0
2 years ago
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