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3 years ago

-6(15) explain please and thank you

Mathematics

2 answers:

Paul [167]3 years ago

4 0

Answer:

-6(15) = -90

Step-by-step explanation:

() means multiply so -6 x 15 = -90

1 5

- 6

-3 0

-6

-90 (cross multiplying)

- x + = -

- x - = +

const2013 [10]3 years ago

4 0

-90. You multiply by negative times positive equals negative

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3 years ago

A 2?-ft wide circular track for a camera dolly is set up for a movie scene. The two rails of the track form concentric circles.

navik [9.2K]

Answer: A wheel on the outer rail travel 12.57 ft more than a wheel on the inner rail of the track.

Step-by-step explanation:

Since we have given that

Radius of inner circle = 57 ft

As we know the formula for "Circumference of circle":

$Distance=Circumference=2\pi r\\\\Distance=2\times \frac{22}{7}\times 57\\\\Distance=358.28\ Ft$

Since we have also mentioned that there is 2 feet wide circular track for a camera dolly.

So, Radius of outer circle will be given as

$57+2\\=59\ ft$

So, Distance = Circumference is given by

$Distance=2\pi R\\\\Distance=2\times \frac{22}{7}\times 59\\\\Distance=370.85\ ft$

Hence, Difference between the outer rail travel than a wheel on the inner rail travel is given by

$370.85-358.28\\\\=12.57\ ft$

Therefore, A wheel on the outer rail travel 12.57 ft more than a wheel on the inner rail of the track.

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3 years ago

A line and a point not on the line lie in exactly one plane. True False

Paraphin [41]

True, they exist in exactly one plane

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3 years ago

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iogann1982 [59]

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Answer:

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