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2 years ago

After cutting a piece 1.65 m long from a piece of cable, the remaining

Mathematics

1 answer:

Neko [114]2 years ago

3 0

Answer:

5.15 m

Step-by-step explanation:

To find how long the cable was originally, find the sum of the length of the piece that was cut off and the length of the remaining piece:

1.65 + 3.5 = 5.15

The cable was originally 5.15 m long.

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product is the answer to a multiplication problem mx6=90

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2 years ago

A fire department's ladder is 110 feet long. A firefighter is trying to reach the top of a 100 foot building by leaning the ladd

Alekssandra [29.7K]

Answer:

sin-¹(10/11)

Step-by-step explanation:

The height of the building is 100 ft and the ladder is 110ft long .We can imagine this situation as a right angled ∆. For figure refer to the attachment .

We can use ratio sine here. Let the angle of elevation be theta.

In ∆ ABC :-

=> sinθ = p/h

=> sinθ = 100ft / 110 ft

=> sinθ = 10/11

=> θ = sin -¹ ( 10/11) .

<h3>Hence the angle of elevation is sin -¹ ( 10/11). </h3>

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2 years ago

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USPshnik [31]

Answer:

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Step-by-step explanation:

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2 years ago

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What is the solution of the following system?

Yakvenalex [24]

<h3>Answer: B) no solutions</h3>

===========================================================

Explanation:

Let's isolate the variable y in the first equation

-2x - y = 1

-2x = 1 + y

1+y = -2x

y = -2x-1

Then we'll plug this into the second equation

-4x - 2y = -1

-4x - 2(-2x-1) = -1

-4x + 4x + 2 = -1

0x + 2 = -1

0 + 2 = -1

2 = -1

We run into a contradiction. No matter what x value we pick, the last equation will never be true. This leads to a domino effect to cause the first set of original equations to never be true when considered as a system.

Therefore, this system is inconsistent. There are no solutions. These two lines graph out parallel lines that never intersect.

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2 years ago

Use the coordinates of the plotted points to complete the calculation below. Pay attention to negative signs

Alex787 [66]

answer:

-1/2

explanation

1-2 / 4-2 = -1/2

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2 years ago

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