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3 years ago

5. How many different singing quartets can be formed from a class of 30 singers?

Mathematics

1 answer:

AveGali [126]3 years ago

8 0

Answer:

Step-by-step explanation:

since a quartet consists of 4 people, it's basically asking how many groups of 4 can you make out of 30.

You can do this in your head or divide: 30 / 4 =7 r2

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Car is moving on a circle on a plane. At time t (seconds), its x-coordinate is given by x(t) = 10 sin(200t + 3) + 30 while its y

Aleks [24]

Answer:

we have centre of circle as (30,40) and radius = 1

Step-by-step explanation:

Given that a car is moving on a circle on a plane.

At time t (seconds),

$x(t) = 10 sin(200t + 3) + 30$

and

$y(t) = 10 cos(200t + 3) + 40$

$x-30 = 10 sin(200t + 3) \\y-40 = 10 cos(200t + 3) + 40$

when we square and add both the equations we get

$(x-30)^2 + (y-40)^2 = 1$

(since sin square + cos square = 1 always)

i.e. we have centre of circle as (30,40) and radius = 1

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AleksandrR [38]

Scale in terms of cm to m= 1/5
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Considering this, if the dimensions are 15cm and 20cm, you would need to multiply them by 5 to convert them to meters

15*5= 75 20* 5=100

Dimensions- 75ft by 100ft

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4 years ago

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larisa86 [58]

They're called equivalent expressions

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frosja888 [35]

Answer and Step-by-step explanation:

$Greetings!$

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klemol [59]

Answer:

(5x-4y)=19

5×19-4×19

95-76

Step-by-step explanation:

x+2y=8

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