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geniusboy [140]
2 years ago
11

A bus driver covers a certain distance in 3 hours at an average speed of 80 km/h. How long will the journey take at an average s

peed of 50 km/h?​
Mathematics
1 answer:
BaLLatris [955]2 years ago
8 0

Answer:

d= s x t

=50km/h x 3h

= 150km/h

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4 times a number is greater than -48.what are the possible values for the number ?
Keith_Richards [23]

The answer might be - 12

4 x -12 = 48

7 0
3 years ago
When steve woke up. his temerature was 102. two hours later it was 3 lower what is his temerature now?
valentina_108 [34]
Steve's original temperature - 102

2 hours later it dropped 3 degrees

102 - 3 = 99

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3 years ago
How many 4 digit multiples can not be divided by 5
Advocard [28]

Answer:

1800

Step-by-step explanation:

Let us solve this question by Modular Airthmatic.

Let the lowest 4 digit number be X.

X= 1 (mod 5)

X =2 (mod 5)

X=3 (mod 5)

X =4 (mod 5)

X=1+5 t where t is any integer.

1+5 t=2 (mod 5)

5 t=1 (mod 5 )

5 is the Modular Inverse of modulo 5

t=1 (mod 5)

t =1+5 u : u= any integer.

X becomes 1+ 5 (1+5u )=6+25 u

6+25u =3 (mod 5)

25 u= -3 (mod 5)=2 (mod 5)

25 is Modular Inverse of Modulo 5

u=2 (mod 5)

u =2+5 v : v= any integer.

X becomes 6 +25 (2+5 v)=56+125 v .

56 +125 v=4 (mod 5)

125 v=-52 (mod 5)=3 (mod 5)

125 is Modular Inverse of modulo 5

v = 3 (mod 5)

v =3 +5 w where w is any integer.

For lowest 4 digit number, take

w=200

X=1003 : Lowest 4 digit number.

Take w=201

X=208 : Next number.

For 4 digit largest number, take

w=1995

X= 9978 : Largest number.

No. of Numbers =(1995 - 200 )+1=1800 □Ans.

8 0
3 years ago
Read 2 more answers
If an airplane’s speed is 850 miles/hour ? What is it’s speed in meters/seconds
Rasek [7]

Answer:

379.984 meters per second.

5 0
3 years ago
If a 100.8 kg cement bag had 20.35 kg removed from it, what is the new weight of the bag?
Snowcat [4.5K]
Just subtract 20.35 from 100.8
100.8 \: kg - 20.35 \: kg = 80.45 \: kg

if your bag weighs 100.8 kg and you scoop out 20.35 kg then weigh your bag it will be 80.45 bc u took out 20.35 kg of the cement to use. hope that explains it
8 0
3 years ago
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