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2 years ago

Angles between north east and north west are

Mathematics

1 answer:

abruzzese [7]2 years ago

3 0

Answer:

supplementry angles

Step-by-step explanation:

they add up to 180 degrees

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Which is more, 1 kilometer or 598 meters?

Talja [164]

Answer:

1 kilometer

Step-by-step explanation:

each kilometer is 1000 meters, so you would expect

1000 > 598

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2 years ago

When Sam and his friends get together, Sam makes a fizzy orange drink by mixing orange juice with soda. On Friday, Sam makes 7 l

Marina86 [1]

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no because the ratio 3:4 is not equivalent to 4:5

Step-by-step explanation:

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2 years ago

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What is the point (4,7) after a rotation of 90 counterclockwise about the origin.

kkurt [141]

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math.way will help

Step-by-step explanation:

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2 years ago

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Discuss on piazza but do not submit. Divide [-2,2] into (a) 10 subintervals (b) 1000 subintervals of the same length. Then use t

Elis [28]

Answer:

attached below

Step-by-step explanation:

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2 years ago

At noon, ship A is 130 km west of ship B. Ship A is sailing east at 25 km/h and ship B is sailing north at 20 km/h. How fast is

Hitman42 [59]

Answer:

answer = 12.87 km/h

Step-by-step explanation:

Given

Ship A is sailing east at 25 km/h = $\frac{dx}{dt}$

ship B is sailing north at 20 km/h = $\frac{dy}{dt}$

here x and y are the sailing at t = 4 : 00 pm for ship A and B respectively

so we get x = 4 ×25 =100 km/h

y = 4× 20 = 80 km/h

let z is the distance between the ships, we need to find $\frac{dz}{dt}$ at t = 4 hr

At noon, ship A is 130 km west of ship B (12:00 pm)

so equation will be

$z^2 = (130-x)^2 + y^2......................(i)\\put x = 100 and y = 80 \\\\we | | get \\$

$z^2 = 30^2 + 80^2\\z =\sqrt{7300} km/h$

derivative first equation w . r. to t we get

$2z\frac{dz}{dt} =$ $-2(130-x)\frac{dx}{dt}$ $+2y\frac{dy}{dt}$

$\frac{dz}{dt} =\frac{1}{z}[(x -130)\frac{dx}{dt} +y\frac{dy}{dt}]$

$\frac{dz}{dt} = \frac{( -20\times25 + 80\times20)}{\sqrt{7300} }$

$= \frac{1100}{85.44}\\ = 12.87km/h$

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2 years ago