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Rama09 [41]
3 years ago
10

the braking distance of a vehicle is directly proportional to the square of its speed. when the speed of the vehicle is b m/s, i

t's breaking distance is d m. if the speed of the vehicle is increased by 200%. find the percentage increase in its breaking distance​
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
6 0
“The breaking distance is directly proportional to the square of its speed”
Using your variables, this means: d = k•b^2
k here is some unknown (and for this question irrelevant) number.

Now if b (the speed) is increased by 200%, then your new speed is b+2b = 3b. The 2b is the 200% increase.

Throw 3b into the first equation we have the new d as:
d = k • (3b)^2

Simplifying this, you have d = k•9b or d=9kb

This means the new braking distance is 9 times the original braking distance.
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A claw arcade machine contains stuffed animals and mystery boxes. There are 51 items in the machine. Winning a stuffed animal ha
Oliga [24]
Answer: 34 stuffed animals & 17 mystery boxes.

First off, split 51 into three parts, trying to find how much 1/3 is of 51. It equals 17.

The stuffed animals in the machine are “twice as much” of the mystery boxes, so you need to multiply 17 x 2 to find the amount of stuffed animals.

17 x 2 = 34

As for the mystery boxes, you need to multiply it by one.

17 x 1 = 17.

In summary, the answer is 34 stuffed animals and 17 mystery boxes.
4 0
3 years ago
Which action is not a step in using paper folding to find the midpoint of a line
dedylja [7]

Answer:

A. Draw a line from the segment to any point on the fold line.

Step-by-step explanation:

When using the paper folding method to find the midpoint of a line segment we take the following steps:

  1. Draw a line segment on the tracing paper
  2. Fold the tracing paper so that the endpoints lie on top of each other
  3. Mark the intersection of the fold and the segment with a point

These steps include statements B, C, and D. Drawing a line from the segment to any point on the fold line, which is statement A,  is not included in these steps because it is not needed.

Thus, choice A is not a step in using paper folding to find the midpoint of a line segment.

5 0
3 years ago
What 3.405 ounces in expanded form
Y_Kistochka [10]
What you’re doing is breaking it down into its parts and writing it into an equation that way long hand.

3 + .4 + .00 + .005
7 0
3 years ago
A musician spends 90 minutes practicing piano and guitar the time spent is 30 minute less than twice the same time spent on guit
11111nata11111 [884]

Answer:

The which spends on the piano is( 50 minutes )

The which spends on the guitar is( 40 minutes )

Step-by-step explanation:

The steps of the solution in the above photo

I hope that is useful for you :)

8 0
3 years ago
How do i write it please and the answer
natali 33 [55]
Use your keyboard and if that doesn’t work on the right top comet there’s a pen that should work :))
4 0
3 years ago
Read 2 more answers
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