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aniked [119]
3 years ago
11

Ardi and lei are both travelling by train. Ardi’s train travels 70km in 35 minutes. Lei’s train travels 585km. It leaves at 9:05

and arrives at 13:35. Work out the difference in Km/h between the average speed of there trains
Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:47.14km/h

Step-by-step explanation:

585÷3 and 1/2=167.14km/h

70÷35/60=120km/h

167.14-120=47.14km/h

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How do the expressions 72 divided and -72divided by (-9) and compare when they are evaluated?
padilas [110]

Complete question is;

How do the expressions 72 divided by 9 and -72 divided by (-9) compare when they are evaluated?

A. They have different values and are different signs.

B. They have different values but are the same sign.

C. They have the same value but are different signs.

D. They have the same value and the same sign

Answer:

D. They have the same value and the same sign

Step-by-step explanation:

For 72 divided by 9,it is;

72/9 = 8

Usually when we don't have any sign in front of a number, it is said to be positive.

Thus, the answer can be expressed as; +8

Also, when -72 is divided by (-9), it is;

-72/-9

The negative signs will cancel out to give; 8

Similar to the first division, since no sign is attached to 8,it is said to be positive as +8.

This means both divisions yield same values and same signs

5 0
3 years ago
PLEASE HELPPP! I'LL GIVE BRAINLEST​
Svet_ta [14]

Answer:

60 min

Its just a guess. just take lcm of all and u get 60

6 0
3 years ago
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Solve for t: 4n = 2(t-3)
spayn [35]
T=2n+3
considering n has no other values given
3 0
3 years ago
Taking into account identical letters, how many ways can the researcher arrange the word CALLITRICHIDAE that start or end with v
zhuklara [117]

Answer:

241,920 different ways

Step-by-step explanation:

We have 6 vowels, but A repeats twice and I repeats three times, so the number of ways in which each can either start or end the word:

³P₂ = 3! / (3 - 2)! = 6 / 1 = 6 ways

You can start words with A, E or I, or end the words with A, E, or I.

the remaining 8 consonants can be arranged in 8! ways = 40,320 ways

total number of ways that the letters can be arranged = 6 x 40,320 = 241,920 different ways

5 0
3 years ago
83 divide by 4 and 91 divide by 7
Lubov Fominskaja [6]
83 : 4 = 20.75
91 : 7 = 13
..........
8 0
4 years ago
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