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BabaBlast [244]
3 years ago
15

The quantities x and y are proportional.pls help plsssss this work is due 20 min plsss helppp

Mathematics
1 answer:
Dahasolnce [82]3 years ago
5 0

Answer: 2.5

Step-by-step explanation:

y = rx

substitute numbers in and solve for r

if

y = 10

x = 4

then

10 = r4

r = 10/4 = 2.5

this works for all the other numbers and always gives r = 2.5

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A typical marathon is 26.2 miles. Allan averages 12 kilometers per hour when running in marathons. Determine how long it would t
Natali [406]

Answer:

The time taken by Allan to complete the marathon 3.5 hours

Step-by-step explanation:

Given as :

The distance cover in marathon = d = 26.2 miles

∵ 1 mile = 1.609 km

So, d = 26.2 × 1.609 km

i.e d = 42.155 kilo meter

The average speed of Allan = s = 12 km per hour

Let the time taken by Allan to complete the marathon = t hours

Now, ∵ Time = \dfrac{\textrm Distance}{\textrm Speed}

Or, t =  \dfrac{\textrm d}{\textrm s}

Or, t =  \dfrac{\textrm 42.155 km}{\textrm 12 kmph}

or, t = 3.512 hours

So , The time taken by Allan to complete the marathon = t = 3.5 hours

Hence, The time taken by Allan to complete the marathon 3.5 hours Answer

4 0
3 years ago
9.a )Explain why plane JKL is not an appropriate
VLD [36.1K]

Answer:

I will attach the missing drawing with the answer.

9.b)

Plane JKM

Plane JLM

Plane KLM

Step-by-step explanation:

The drawing for this question is missing. I will attach it with the answer.

9.a) Plane JKL is not an appropriate name for the plane because all of three points lie in the same line.

Through a line pass infinite planes. The plane JKL doesn't define a unique plane. That's why plane JKL isn't an appropriate name for the plane.

9.b) We can name the plane using three points that don't lie in the same line.

Three possible names for the plane are :

Plane JKM

Plane JLM

Plane KLM

6 0
3 years ago
Plsss help I’ll give u brainlest and 10 points
Eddi Din [679]
The answer would be B I hope this helps.
5 0
3 years ago
Please can someone help me work out the missing length​
Otrada [13]
Vol=area x Height

length= 3
breadth= X
Height = 2

area must = half of 42 because to get the volume of 42cm cubed, you had to times the area by 2 so

42 devided by 2 is 21 so to find the length you myst do 21 devided by 3 which is 7

so the missing length is 7cm
8 0
3 years ago
Which measure is equivalent to 1.5 kg?
iogann1982 [59]
Your answer would be 1500g since there are 1000 grams in a kilogram.

Brief Explanation.

For every 1 kilogram there's 1000 grams
so if you were to have 1.5 kilograms you'd have
1,500 grams.
500 is half of 1000 so if you have a .5 you'd have 500 grams
which you would then add 500 to 1000 which would result in your answer
of 1500


 
6 0
3 years ago
Read 2 more answers
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