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2 years ago

Two airplanes leave an airport at the same time. One airplane travels at 400 km/h

Mathematics

1 answer:

Neko [114]2 years ago

4 0

Answer:

912.414

Step-by-step explanation:

The angle

between the directions of motion of planes

320

−

200

120

∘

The distance

traveled by first plane flying at a speed of

150

km/hr

hrs

150

⋅

450

Similarly, the distance

traveled by second plane flying at a speed of

200

km/hr

hrs

200x3=

600 km

Now, the distance between the planes after 3

hrs will be equal to the side of a triangle opposite to the angle θ=120∘

included by the sides

450

& b=

600

Now, using Cosine rule in the concerned triangle, the distance between the plane after

hours is given as

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Brrunno [24]

Answer:

$a_5 = 32$

Step-by-step explanation:

The nth term for the geometric sequence is given by:

$a_n = a_1 \cdot r^{n-1}$

where,

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r is the common ratio

n is the number of terms.

As per the statement:

For the geometric sequence of $a_1=2$ and r=2

We have to find $a_5$

for n = 5;

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Substitute the given values we have;

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3 years ago

Sara hina and Arslan have a total of RS 390in their wallet . Sara has Rs. 7more than Hina .Arslan has 3 times what sara has . Ho

Brums [2.3K]

Answer:Sara hina and Arslan Have RS79.4,RS 72.4 and RS238.2 respectively.

Step-by-step explanation:

Step 1

Let the amount that hina has be x

the amount that sara has be represented as 7+x

and the amount that Arslan have be represented as 3(7+x)

such that the total amount in their wallet which is 390 can be expressed as

x+7+x + 3(7+x)=390

Step 2

Solving

x+7+x +21+3x=390

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Hina has RS 72.4

Sara =7+x==72.4+77= RS 79.4

Arslan =3(7+x)=3 x 79.4=RS 238.2

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2 years ago

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Solve using substitution or elimination. y = x + 1 2x - 5y = 4

andrew-mc [135]

Substitute y = x + 1 into 2x - 5y = 4

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Solve for x in -3x - 5 = 4

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Therefore,

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3 years ago