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horrorfan [7]
3 years ago
11

The cost of a mirror is directly proportional to the square of its width. A mirror of width 40 cm costs $24. Find the cost of th

e mirror if the width is doubled
please answer fast
Mathematics
1 answer:
OverLord2011 [107]3 years ago
4 0

Answer:

Step-by-step explanation:

Your answer

Proportion????

So, cost = width

If width is 80 then cost will be 48

I dont know if this right.

Answer accurancy 80%

Mark it as Brainlist answer. Follow me.

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svet-max [94.6K]
That would be 0.75:) hope this helps!
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2+266666662724683745946198753278313=
LUCKY_DIMON [66]

Answer:

2.6666666e+32

Step-by-step explanation:

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3. you have your answer

6 0
3 years ago
What question do you ask when understanding the problem?
umka21 [38]
It seems that you have missed the necessary options to answer this question, but anyway, hope my answer helps. The question that you ask when understanding the problem would be this: "<span>what do I want to find out?"
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6 0
3 years ago
In 2015, an autonomous vehicle drove from the Golden Gate Bridge to New York City at an average speed of 15.7 miles per hour. Th
ivolga24 [154]

The speed is the distance covered by an object at a particular time. The distance that is covered by the vehicle is 3,391 miles.

<h3>What is speed?</h3>

The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.

Speed = Distance / Time

Given that the journey took 9 days. Therefore, the time in hours will be equal to,

Time = 24 hours/day × Number of days

        = 24× 9

        = 216 hours

Also, given that the speed of the vehicle is 15.7 miles per hour, the number of hours for which it travels is 216 hours.

Distance = Speed × Time

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Hence, the distance that is covered by the vehicle is 3,391 miles.

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4 0
2 years ago
Please help me with #7
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Step-by-step answer:

This is a regular heptagon, means it has 7 <em>congruent</em> sides and 7 <em>congruent </em>vertex angles.

To work with polygons, there is a very important piece of information that you must know to solve the majority of related problems.

This is:

sum of exterior angles of polygons = 360 degrees.

If you don't remember the 360 degrees, think of the sum of exterior angles of an equilateral triangle, which is 3*(180-60)=3*120=360!  It works!

For a regular heptagon, c = 360/7=51.43 degrees approx.

This means that each vertex angle measures

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So since 2d+the vertex angle = 360, we have

2d+(180-c)=360

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d=(180+c)/2=90+c/2=115.71 degrees. (approx.)

8 0
3 years ago
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