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iren [92.7K]
3 years ago
14

Trains leave Bristol to Cardiff every 15 minutes to London every 21 minutes A train to Cardiff and a train to London both leave

Bristol at 11am. At what time will a train to Cardiff and a train to London next leave Bristol at the same time?
I don't know please help
​
Mathematics
1 answer:
artcher [175]3 years ago
7 0

Step-by-step explanation:

If we take lcm of 21 min and 15 min we get 105 min

therefore, 105 min after 11 a.m. would be 12:45 p.m.

hope this helps you

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ALSO NEED HELP ON THIS ONE, ASAP!! (No links, thats all)
meriva

The area of the triangle is 36 in², so she can create only 4 triangles.

6 0
3 years ago
In a housing estate the direct proportion of flats to houses is 2:5. If there are 80 flats, how many houses are there?
Kobotan [32]

80 \div 2 = 40 \\ 40 \times 5 = 200
there are 200 houses
4 0
3 years ago
Can someone explain how I'm supposed to determine whether each pair of ratios form a proportion? I so stuck on it sorry can i ge
Natalka [10]

Step-by-step explanation:

We will learn how to solve proportion problems. We know, the first term (1st) and the fourth term (4th) of a proportion are called extreme terms or extremes, and the second term (2nd) and the third term (3rd) are called middle terms or means.

Therefore, in a proportion, product of extremes  = product of middle terms

example

1. Check whether the two ratios form a proportion or not:

(i) 6 : 8 and 12 : 16;                           (ii) 24 : 28 and 36 : 48

Solution:

(i) 6 : 8 and 12 : 16

6 : 8 = 6/8 = 3/4

12 : 16 = 12/16 = 3/4

Thus, the ratios 6 : 8 and 12 : 16 are equal.

Therefore, they form a proportion.

5 0
3 years ago
The boy wants to build rectangular beetle cages to study beetle behavior. He wants all the sides on the base of his cages to be
kap26 [50]

Answer:

32 cm by 18 cm

16 cm by 36 cm,

48 cm by 12 cm

24 cm by 24 cm

Step-by-step explanation:

<u><em>The complete question is</em></u>

A boy wants to build rectangular cages. He wants all the sides on the base of his cages to beat least 10 cm long.he also wants the base area to equal 576 cm2. The boy needs help to find all the possible lengths and widths for the base of the cages. He used only whole centimeters, with no fractional parts.what are all the possible dimensions for the rectangular base?

we know that

The number 576 decompose in prime factors is the same that write

576=(2^6)(3^2)

To find out possible side lengths, multiply different combinations of these prime numbers together (make sure each pair adds up to 10)

3x3=9cm                  2x2x2x2x2x2= 64cm  ----> is not a combination (one side is not greater than 10)

3x3x2= 18cm            2x2x2x2x2= 32cm

3x3x2x2= 36cm        2x2x2x2= 16cm

3x2x2= 12cm             3x2x2x2x2= 48cm

3x2x2x2= 24cm         3x2x2x2= 24cm

therefore

32 cm by 18 cm

16 cm by 36 cm,

48 cm by 12 cm

24 cm by 24 cm

3 0
3 years ago
PLS HELP ME!!! I AM GIVING ALL MY POINTS OUT( look I don't have alot of points don't bully me(⌐■_■))
hodyreva [135]

Answer:

9x

Step-by-step explanation:

3x3=9 +x=9x hope this helps

4 0
3 years ago
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